Building or renovating a home along the Windward coast of O'ahu is a dream for many, but the reality of coastal construction in Hawaii involves navigating a complex web of environmental challenges and shifting regulations. Whether you are planning a custom build in Lanikai or a major renovation in Kaneohe, understanding the unique requirements for salt-air durability and flood compliance is essential for protecting your investment.
Coastal construction in Hawaii is significantly more demanding than inland projects due to extreme salt spray, high humidity, and strict shoreline setbacks. In 2026, the stakes are even higher as new FEMA flood maps and updated Honolulu ordinances fundamentally change where and how you can build. This guide provides a comprehensive breakdown of what you need to know to navigate the permitting, material selection, and design requirements for a successful coastal project on the Windward side.
In this article, you will learn about the June 2026 FEMA map shifts, the updated shoreline setback rules under Ordinances 23-3 and 23-4, and the specialized materials required to withstand Hawaii’s coastal elements. You will also get a closer look at Kailua and Kaneohe corrosion zones, the reality of hardship variances inside the shoreline setback, coastal landscaping and drainage expectations for SMA approval, hurricane-ready upgrades that go beyond minimum code, a live Kailua permit case study, and the maintenance schedule that keeps a Windward home from getting chewed up by the island climate.
What are the New 2026 FEMA FIRM Map Changes for Windward O'ahu?
FEMA’s updated Flood Insurance Rate Maps (FIRMs) for the City & County of Honolulu are set to take effect on June 10, 2026, moving thousands of O'ahu parcels into high-risk Special Flood Hazard Areas (SFHAs). For homeowners in Kailua and Kaneohe, this means that properties previously considered low-risk may now be subject to mandatory flood insurance and stricter building codes under Revised Ordinances of Honolulu (ROH) Chapter 21A.
If your property is newly mapped into an SFHA, such as zones AE or VE, any "substantial improvement" (work costing more than 50% of the structure's market value) will trigger a requirement to bring the entire home up to current flood-hazard standards. This often includes elevating the lowest floor above the Base Flood Elevation (BFE) and using flood-resistant materials. For new custom home builds, these maps dictate the very foundation of your design.
The June 2026 deadline is a critical pivot point for Windward homeowners. If you are currently in the planning stages with a general contractor hawaii, you must verify how these map shifts impact your specific lot. Properties in Kaneohe Bay, which face unique surge risks, or low-lying areas of Kailua are particularly vulnerable to these map changes.
- Effective Date: June 10, 2026.
- Impacted Areas: Roughly 3,500+ parcels across O'ahu.
- Regulatory Trigger: Mandatory flood insurance for federally backed loans and compliance with ROH Chapter 21A for any major construction.
How Do Honolulu Ordinances 23-3 and 23-4 Affect Shoreline Setbacks?
Honolulu Ordinances 23-3 and 23-4 have completely redefined the "no-build" zones along O'ahu's coasts, increasing shoreline setbacks from the previous 40-foot standard to a range of 60 to 130 feet. These rules are designed to protect homes from coastal erosion and sea-level rise, but they significantly limit the buildable area on smaller oceanfront lots in areas like Lanikai and Beachview Terrace.
Under these ordinances, the setback is no longer a "one size fits all" number. Instead, it is calculated based on historical erosion rates or fixed distances, whichever is greater. For many homeowners, this means their existing homes may now be "non-conforming" structures. If you plan to expand or rebuild, you may find that the new setback line cuts right through your current floor plan, requiring a much smaller footprint or a complete redesign.
Navigating these setbacks requires a certified shoreline survey, which is only valid for a limited window. As a coastal construction company hawaii, we frequently see projects delayed because homeowners underestimated the complexity of the Special Management Area (SMA) permit process that accompanies these setback rules.
- Shoreline Certification: You must obtain a state-certified shoreline survey before any coastal permit application.
- Increased Setbacks: Expect a minimum of 60 feet, with many Windward lots requiring 100+ feet due to erosion trends.
- Hardship Variances: While variances exist, they are notoriously difficult to obtain and can add years to your timeline.
Why Do Standard Materials Fail in Kailua and Kaneohe’s Coastal Environment?
Standard construction materials that work perfectly well in Mililani or Kapolei will often fail within 24 to 36 months when exposed to the salt spray of Kailua or Kaneohe. The "Windward effect" creates a constant mist of salt-laden air that accelerates electrolysis and oxidation, leading to "spalling" in concrete and rapid corrosion in metal fasteners.
For coastal homes, we transition away from standard galvanized steel and lower-grade aluminum. Instead, we utilize Type 316 Stainless Steel for all exterior fasteners, brackets, and railings. Even the "304" grade stainless steel commonly found in appliances will tea-stain and pit within a year on an oceanfront Lanai. Furthermore, any exposed wood must be treated for high-moisture environments to prevent rot and termite infestation, which are exacerbated by the humid coastal climate.
As an experienced general contractor hawaii, Warrior Construction prioritizes material science during the preconstruction phase. We look at the "micro-climate" of your specific street. A home on the mauka side of Kawailoa Road has different needs than one sitting directly on the sand at Kailua Beach Park.
- Fasteners: Only Type 316 Stainless Steel should be used for exterior applications.
- Concrete Protection: High-performance vapor barriers and specialized admixtures are necessary to prevent salt from reaching the rebar.
- Exterior Finishes: Kynar 500 or Hylar 5000 resin-based coatings are the gold standard for resisting salt-air degradation.
What Is the Best Roofing Material for Coastal Homes in Hawaii?
For coastal properties in Hawaii, a high-quality metal roof with a Kynar finish or a specialized standing seam aluminum system is almost always the superior choice over traditional asphalt shingles. While shingles are common, the high winds and salt air of the Windward side tend to lift shingle tabs and degrade the limestone fillers, leading to a much shorter lifespan and potential leaks.
A roof replacement hawaii in a coastal zone requires more than just new top-layer materials. You need a specialized high-temperature, self-adhering underlayment that acts as a secondary water barrier. For the metal itself, aluminum is preferred over steel because aluminum does not rust; it oxidizes, creating a protective layer that stops further corrosion. If you do choose a metal roof hawaii, ensuring the gauge is thick enough to handle 130mph wind gusts (typical for O'ahu's building code) is non-negotiable.
When hiring a roofing contractor honolulu, ensure they understand the importance of "dissimilar metal" separation. If a stainless steel fastener touches a standard aluminum panel without a gasket, galvanic corrosion will eat a hole through your roof in record time.
| Feature | Coastal Metal Roofing | Standard Asphalt Shingles |
|---|---|---|
| Salt Resistance | Excellent (Aluminum/Kynar) | Moderate to Poor |
| Wind Rating | Up to 150+ mph | Typically 110-130 mph |
| Lifespan (Coastal) | 40–50 Years | 12–18 Years |
| Maintenance | Low (Rinse periodically) | High (Algae/Tab repair) |
What Are O'ahu's Corrosion Zones in Kailua and Kaneohe?
O'ahu's Windward coast has distinct corrosion zones, and the difference between beachfront, near-shore, and inland lots is real. A home sitting 500 yards from Kailua Beach still faces heavy salt exposure, but it does not get hit the same way as a true oceanfront lot on Lanikai Loop or a property directly exposed to Kaneohe Bay trade winds.
In practical terms, we treat coastal construction in Kailua and Kaneohe like a map of micro-climates. The closer you are to breaking surf, direct onshore wind, and open exposure, the more aggressive your material package needs to be. That affects your fasteners, railings, exterior lighting, windows, roofing hardware, A/C equipment, and even the coating system on your gate hinges.
A simple field rule works well for early planning:
- Zone 1: Direct beachfront or first-row exposure. This is the highest-risk category. Think homes directly fronting Kailua Beach, Lanikai, or exposed bayfront parcels in Kaneohe.
- Zone 2: Near-shore within roughly 500 yards. Salt still travels inland on Windward trades. Hardware failure happens fast if you value-engineer the wrong items.
- Zone 3: Protected inland Windward lots. These sites still need coastal-grade assemblies, but not every component needs the most expensive marine spec.
Here is why that matters. A house 500 yards from the beach may perform well with 316 stainless on exposed hardware, high-grade powder-coated aluminum, and disciplined maintenance intervals. A beachfront property usually needs a full marine-environment strategy: 316 stainless everywhere outside, isolated dissimilar metals, upgraded door rollers and hinges, sealed electrical boxes, sacrificial maintenance coatings, and more frequent wash-downs. If you skip that distinction, you end up paying the "Island Tax" twice: once during construction and again during repair.
In Kailua, lots tucked a bit mauka behind established streets and landscaping can get some protection from direct spray. In Kaneohe, properties facing open bay exposure often take constant moisture and salt loading, especially during storm cycles. That is why your builder should look beyond ZIP code and evaluate your exact orientation, wind path, vegetation cover, and distance from the shoreline before locking in specs.
What Does the Hardship Variance Process Look Like Inside the Shoreline Setback?
The hardship variance process is real, but it is not a shortcut. If you want to build inside Honolulu's expanded shoreline setback area, you should expect a slow, document-heavy, expensive process with no guarantee of approval.
This is where many Windward property owners get surprised. They assume that because an older house already exists in the setback, they can rebuild the same footprint or push a new addition makai. Under current rules, that is not how it works. The City looks closely at whether your request is the minimum necessary, whether safer alternatives exist, and whether the project increases risk to shoreline processes, public access, or neighboring properties.
The basic hardship variance path usually includes:
- A certified shoreline survey.
- Setback calculations based on the current rules and erosion data.
- A written justification showing why the variance is necessary.
- Site plans proving you explored options outside the setback first.
- Environmental review materials, which may trigger additional studies.
- Public notice, agency review, and sometimes neighborhood-level scrutiny.
Under the current shoreline framework, setbacks can range from 60 feet to 130 feet depending on the lot and erosion conditions. On smaller Kailua beachfront parcels, that can erase most of the practical buildable area. The City does allow variance requests, but the standard is high. You are not arguing that your preferred design is nicer. You are arguing that strict application of the setback creates a genuine hardship and that your proposal still protects coastal resources as much as possible.
If your lot is already constrained by access, septic upgrades, flood elevation requirements, or an oddly shaped TMK, the process gets tougher. Expect consultants. Expect revisions. Expect time. A realistic variance effort can add many months to design and permitting, and in more contested situations it can stretch much longer. If your project only works financially with a guaranteed makai expansion, that is a dangerous assumption to build your budget around.
The smarter move is to test two schemes early: one that stays fully compliant and one that seeks relief. That gives you a fallback path if the variance stalls or fails. On the Windward side, that kind of preconstruction honesty saves a lot of heartburn.
What Coastal Landscaping and Drainage Features Help SMA Approval in 2026?
Coastal landscaping is no longer just about making your yard look clean and low-maintenance. In 2026, drainage strategy, water quality protection, and runoff control are increasingly tied to whether your SMA application feels responsible and approvable.
For Windward projects in Kailua and Kaneohe, the City wants to see that your site design will not dump water, sediment, or pollutants toward the shoreline and neighboring lots. That is why xeriscaping, bioswales, permeable pavers, and reduced hardscape coverage keep showing up in better coastal submittals. They are not just trendy design moves. They help demonstrate that your project works with the land instead of against it.
The most approval-friendly site packages usually include:
- Xeriscaping with native or adaptive plantings that reduce irrigation demand and erosion.
- Bioswales or planted drainage channels that slow and filter stormwater.
- Permeable pavers for driveways, walkways, and parking pads.
- Strategic grading plans that keep runoff away from neighboring parcels and public right-of-way.
- Minimal turf areas near the shoreline where overspray, fertilizer, and runoff create compliance issues.
This matters because traditional all-concrete site plans are harder to justify in sensitive coastal areas. If your design shows large impervious surfaces and no visible stormwater strategy, reviewers start asking tougher questions. In Kailua especially, where lots can be tight and drainage patterns affect adjacent homes fast, bioswales and permeable surfaces help you solve a practical problem while strengthening your permit package.
You do not need to turn your property into a science project. You do need to show intent. A well-designed coastal landscape should look natural, easy to maintain, and kama'aina-friendly. Think gravel bands, drought-tolerant planting, controlled roof drainage, and paver systems that let water move down into the soil profile instead of sheet-flowing across the whole lot. In many cases, these features also reduce puddling, protect foundations, and keep your lanai and walkways cleaner during heavy Windward rains.
How Should You Build for Hurricane Resilience Beyond Minimum Code?
Minimum code is the floor, not the goal, for a Windward custom home. If you are building in Kailua or Kaneohe in 2026, hurricane resilience means planning for stronger envelopes, better openings, stronger connections, and one protected space inside the home where your ohana can shelter if the grid goes down.
The code already requires wind-resistant design, but custom homes near the coast benefit from going beyond that baseline. Salt air weakens components over time, and storms exploit the smallest failure point. If one window fails or one garage door folds, internal pressure can turn a manageable event into major structural damage.
The smartest upgrades we recommend on Windward coastal builds include:
- Impact-rated glass and doors. These protect against windborne debris and reduce the chance of envelope breach.
- 316 stainless or heavily protected structural connectors. Tie-downs, clips, and anchors should match the environment, not just the engineering notes.
- Reinforced garage doors. Large openings are common failure points in hurricanes.
- A defined safe room or hardened interior space. This is especially smart for larger custom homes and multigenerational layouts.
- Backup power planning. Even if you do not install a full generator on day one, rough-in for future resiliency matters.
- Elevated and protected mechanical systems. Your A/C, electrical gear, and communications equipment should stay operational after a storm.
A "safe room" in Hawaii does not need to feel like a bunker. It can be a reinforced interior room with upgraded framing, impact-rated openings where needed, protected ventilation, emergency power access, and secure storage for water, meds, and communications. On higher-end custom homes, we are seeing more owners quietly include this feature because it makes sense.
The same goes for windows. Standard glass may satisfy baseline requirements in some assemblies, but impact-rated systems are becoming the new normal for serious coastal builds. They perform better in storms, help with noise, and often improve long-term resale confidence. If you are already investing in a custom home on the Windward side, this is not the place to cut corners.
What Can the 430D N. Kalaheo Ave Case Study Teach You About Current DPP Reviews?
The 430D N. Kalaheo Ave permit activity is a useful snapshot of how the City is looking at coastal applications in Kailua right now. It shows that DPP and neighborhood stakeholders are paying close attention not just to the structure itself, but to cumulative site impacts, shoreline context, drainage, and whether the proposal reads as genuinely responsive to the lot.
A recent Kailua Neighborhood Board planning agenda identified an SMA Major Permit Application for 430D N. Kalaheo Ave (TMK 4-3-017:0196). Even without treating one active file as a universal rulebook, it gives you a strong clue about the types of projects now receiving deeper public and regulatory attention. If a Kailua residential project rises to SMA Major review, you should assume the City is scrutinizing value, scale, access, environmental documentation, and site design as a whole package.
What this case study tells you in practical terms:
- Big coastal residential work now gets looked at holistically. House, drainage, landscape, shoreline context, and neighborhood fit all matter together.
- SMA review is not just about square footage. Cost thresholds and cumulative impacts can push a project into a more demanding lane.
- Public visibility matters. Once a project shows up on agendas and hearing tracks, the quality of your submittal package matters even more.
- Projects that ignore runoff, access, or shoreline sensitivity tend to get harder questions.
When we analyze what tends to move more smoothly, a pattern shows up. Approvable coastal packages usually minimize new encroachment, respect setbacks, control drainage, reduce unnecessary hardscape, and explain exactly why each design move belongs on that site. Projects that feel overbuilt for the parcel, too close to the shoreline, or careless about runoff and coastal resource impacts draw resistance fast.
The takeaway for your project is simple: build your submittal like it will be read by regulators, neighbors, and coastal planners at the same time. Because it will. In Kailua, the bar is higher now. That is not a bad thing. It just means your architect, engineer, and builder need to be aligned before anything goes into HNL Build.
How Can You Design a Flood-Ready Custom Home in Kaneohe?
Designing a flood-ready home in Kaneohe or Kailua requires balancing strict FEMA requirements with the aesthetic goals of a luxury custom build. The primary strategy involves "Flood Elevation," where the living spaces are raised above the predicted flood levels. However, simply putting a house on stilts isn't the only option; modern "Break-away Walls" and "Flood Vents" allow for a more integrated look that still meets code.
Break-away walls are designed to fail under the pressure of rushing water, allowing the flood to pass through the lower level (usually a garage or storage area) without compromising the structural integrity of the main house. This design is often paired with hydrostatic flood vents that automatically open to equalize water pressure. As custom home builders hawaii, we work with architects to ensure these functional elements become part of the home's "island-modern" aesthetic rather than looking like an industrial afterthought.
Furthermore, all mechanical systems, including A/C compressors, electrical panels, and water heaters, must be elevated above the BFE. In coastal Kaneohe, where the water table is high, we also pay close attention to foundation design, often using deeper footings or pile systems to prevent settling in sandy or silty soils.
What Does Coastal Construction Cost in Hawaii?
Coastal construction in Hawaii typically runs 20% to 40% higher than inland projects due to specialized materials, rigorous permitting, and the need for high-skilled labor. In Kailua and Kaneohe, you aren't just paying for the view; you are paying for the engineering required to keep that view safe for the next fifty years.
| Project Element | Estimated Hawaii Coastal Premium | Reason for Cost Increase |
|---|---|---|
| Permitting & SMA | $15,000 – $45,000+ | Shoreline surveys, environmental assessments, and SMA hearings. |
| Roofing | $25,000 – $60,000+ | Aluminum standing seam systems and 316-grade hardware. |
| Windows/Doors | $40,000 – $100,000+ | Impact-rated glass and salt-resistant frames (e.g., Fleetwood or Western). |
| Foundation | $30,000 – $80,000+ | Flood elevation, breakaway walls, and potential pile driving. |
The timeline for these projects is also extended. While a standard home renovation on O'ahu might take 6 months, a coastal custom home can easily take 14 to 24 months from the start of design to final occupancy. The SMA permit process alone through the City & County of Honolulu DPP currently takes 8 to 14 months depending on the complexity of the shoreline issues.
For 2026 planning, you should also budget for the "hidden coastal line items" that do not always show up in a mainland-style estimate template:
- Corrosion-resistant hardware upgrades on everything from exterior lights to gate latches.
- Higher maintenance reserve funding for wash-downs, coating touchups, and HVAC service.
- Landscape drainage compliance features such as permeable pavers or bioswales.
- Wind and impact upgrades that go beyond base code but make real sense on the Windward side.
- Longer lead times for specialty coastal windows, doors, and marine-grade components.
If your architect gives you a beautiful concept without assigning a coastal performance budget, slow down. On O'ahu's Windward coast, every design decision has a cost consequence. Large sliders look great, but salt-rated rollers and impact glazing push the number up fast. Flat site walls near the shoreline may seem simple, but if drainage and runoff controls are weak, you can spend much more later on redesign and permit corrections. Good preconstruction means pricing the real version of the house, not the da kine fantasy version that only works on paper.
What Maintenance Schedule Does a Coastal Home in Kailua or Kaneohe Need?
A coastal home on the Windward side needs a real maintenance schedule, not a once-a-year checklist. If you want your roof, coatings, windows, railings, and A/C equipment to last anywhere near their intended lifespan, you need to treat maintenance as part of the construction strategy.
Salt does not take months off. It settles on metal, works into joints, and accelerates failure at the smallest scratch or weak coating edge. The homes that age well in Kailua and Kaneohe are not always the most expensive ones. They are the ones with owners who stay disciplined after move-in.
Here is a practical schedule we recommend for most coastal properties:
Monthly
- Rinse exterior metal railings, gates, outdoor showers, and exposed hardware with fresh water.
- Check A/C condenser coils for visible salt buildup and debris.
- Walk the lanai and exterior stairs for early rust staining, loose fasteners, or coating blisters.
Quarterly
- Wash down metal roofing, especially at fasteners, panel laps, valleys, and near overhang edges.
- Clean window and door tracks to remove salt crystals and sand.
- Inspect garage door hardware, hinges, and opener brackets for corrosion.
- Test exterior GFCIs, lighting, and weatherproof covers.
Every 6 Months
- Service A/C condensers and clean coils professionally if you are in a direct or near-shore exposure zone.
- Inspect sealants around windows, doors, penetrations, and lanai transitions.
- Check stainless components for tea staining and clean them before pitting begins.
- Review drainage paths, catch basins, permeable paver joints, and bioswales before and after heavy rain cycles.
Annually
- Have your roof, fasteners, and flashings inspected by a contractor familiar with coastal assemblies.
- Recoat or touch up exterior metal where finish wear is starting.
- Inspect concrete for cracking, rust bleed, or spalling signs.
- Review exterior paint and specialty coatings, especially on the makai side of the house.
- Flush irrigation and confirm overspray is not constantly hitting hardware, walls, or windows.
Every 3 to 5 Years
- Re-evaluate protective coatings on railings, gates, and exposed structural steel.
- Inspect anchoring systems, tie-downs, and visible connector points where accessible.
- Reassess your maintenance plan based on how the home is actually aging in its micro-climate.
The biggest mistake you can make is assuming premium materials eliminate maintenance. They do not. They buy you durability, not immunity. A 316 stainless hinge still benefits from rinsing. A Kynar-finished roof still needs inspection. A salt-rated A/C condenser still loses efficiency if the coil packs up with corrosion and grime. That is the real Island Tax of coastal ownership: not just higher construction cost, but ongoing effort. The good news is that disciplined maintenance costs far less than replacing failed components early.
Frequently Asked Questions
Do I really need an SMA permit for a simple deck in Kailua?
Yes, if your property is within the Special Management Area (which covers most oceanfront and near-shore lots in Kailua), even “minor” work like a deck, fence, or major landscaping often requires an SMA Minor Permit. Working without one can lead to heavy fines and “stop-work” orders from the DPP.
How do the new 2026 FEMA maps affect my property value?
While being mapped into a flood zone can increase insurance costs, building a compliant, elevated home often increases long-term value and “insurability.” Buyers in 2026 and beyond will look for homes that already meet these new standards to avoid the headache of future retrofitting.
Is a metal roof too loud during Hawaii’s heavy rains?
Not with modern construction. When a metal roof is installed with high-quality underlayment and proper attic insulation, it is actually very quiet. Many homeowners in Kaneohe prefer the sound, but from a decibel standpoint, it is comparable to shingles when built to modern standards.
What is the 50% rule in Hawaii coastal construction?
The “Substantial Improvement” rule states that if the cost of your renovation exceeds 50% of the market value of the structure (excluding land value), the entire building must be brought up to current flood and wind codes. This is a major trap for homeowners planning “phased” renovations.
Why is stainless steel 316 better than 304 for Lanikai homes?
Type 316 stainless steel contains molybdenum, which provides significantly better resistance to chloride (salt) corrosion. Type 304 will eventually develop “tea staining”: a brown, rusty film: whereas 316 remains pristine even with direct salt spray exposure.
Can I still build a seawall to protect my Kaneohe property?
New seawalls are almost impossible to permit in Hawaii today due to state laws aimed at preserving beaches. The focus has shifted toward “soft” armoring or moving structures further mauka (inland) to allow for natural shoreline movement.
How close to the beach do I need marine-grade hardware in Kailua?
If your home is beachfront or within roughly 500 yards of the shoreline in Kailua, you should assume marine-grade exterior hardware is necessary. Direct beachfront lots need the most aggressive package, including 316 stainless steel, isolated dissimilar metals, and stricter maintenance intervals. Lots slightly mauka may still perform well with coastal-grade assemblies, but standard mainland hardware is usually a mistake anywhere on the Windward side.
How hard is it to get a hardship variance inside Honolulu’s shoreline setback?
It is difficult. A hardship variance inside the shoreline setback is not a routine permit; it is a high-scrutiny process that requires surveys, written justification, design alternatives, and often environmental review. You should plan for months of additional work and understand that approval is never guaranteed, especially on constrained oceanfront lots in Kailua and Kaneohe.
Do bioswales and permeable pavers really help with SMA approval?
Yes. On coastal projects, drainage and runoff control have become central parts of a strong SMA application. Bioswales, permeable pavers, xeriscaping, and thoughtful grading help show the City that your project reduces runoff impacts, protects water quality, and responds responsibly to sensitive shoreline conditions.
Should I upgrade to impact-rated glass even if code does not strictly force it?
For most Windward custom homes, yes. Impact-rated glass adds storm resilience, reduces the risk of envelope failure during a hurricane, and often improves long-term value for a coastal property. In Kailua and Kaneohe, where salt, wind, and flying debris all factor into performance, it is one of the smartest upgrades you can make.
How often do I need to maintain a coastal home in Kaneohe?
More often than an inland O’ahu home. Most coastal homes in Kaneohe need monthly rinsing of exposed metal, quarterly roof and hardware checks, and at least semiannual HVAC service in high-exposure areas. If you wait for visible rust or failure, you are already behind and repair costs climb fast.
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References
- City & County of Honolulu, Department of Planning and Permitting. "Revised Ordinances of Honolulu Chapter 21A: Flood Hazard Areas." honolulu.gov
- FEMA. "Flood Insurance Rate Map (FIRM) Updates for Honolulu County, June 2026." fema.gov
- Hawaii State Legislature. "HRS Chapter 205A: Coastal Zone Management." capitol.hawaii.gov
- Honolulu City Council. "Ordinance 23-3 and 23-4: Shoreline Setbacks and Coastal Protection."
- City & County of Honolulu, Department of Planning and Permitting. "Shoreline Setback Variance." honolulu.gov
- City & County of Honolulu, Department of Planning and Permitting. "SMA Major Permit Instructions." honolulu.gov
- City & County of Honolulu. "Kailua Neighborhood Board No. 31 Planning, Zoning, and Environment Meeting Agenda referencing SMA Major Permit Application for 430D N. Kalaheo Ave." honolulu.gov
- Revised Ordinances of Honolulu, Chapter 23. "Shoreline Setbacks." honolulu.gov
