Kailua, Hawaii Building Permits
Learn how Kailua, Hawaii building permits work, including DPP reviews, timelines, fees, zoning, flood rules, wind design and plan requirements before applying.
Wind
ASCE 7 basic wind speed for Kailua/Oahu is generally about 130 mph ultimate wind speed for Risk Category II buildings, with final design based on ASCE 7, exposure category, topography, building height, openings, and site-specific conditions. Coastal and hillside sites may require more conservative wind detailing.
Snow Load
Minimal snow load. Ground snow load is typically 0 psf for Kailua and most low-elevation areas of Oahu.
Flood
Kailua has mapped FEMA flood hazards, especially near Kailua Bay, Kawainui Marsh, Kaelepulu Stream, canals, low-lying coastal areas, and drainageways. Parcels may fall in FEMA AE, VE, A, shaded X, or X zones. Buildings in Special Flood Hazard Areas generally require flood-resistant construction, elevation documentation, flood openings where applicable, and compliance with Honolulu floodplain regulations. Coastal sites may also trigger shoreline and Special Management Area review.
Earthquake
Seismic design is required under the adopted building code and ASCE 7. Kailua/Oahu projects are commonly designed in a moderate seismic risk range, often around Seismic Design Category C depending on site class, occupancy, and mapped spectral response values. The final seismic design category must be calculated by the design professional for the specific site.
Wildfire
Kailua is generally a wetter windward community, but wildfire exposure can exist near open space, slopes, brush areas, and the wildland-urban interface around neighborhoods near Olomana, Enchanted Lake, and conservation lands. Projects may need to address fire department access, water supply, defensible space, vegetation management, and ignition-resistant construction practices where risk is present. Honolulu Fire Department requirements may apply during permit review.
Building Department
City and County of Honolulu Department of Planning and Permitting (DPP), Building Division
Approval Timeline
Eligible minor residential permits may be issued very quickly through DPP’s online systems if the scope qualifies and no plan review is triggered. Standard residential alterations commonly take about 4 to 12 weeks, while new single-family homes, additions, ADUs/ohana units, or projects needing zoning, drainage, wastewater, shoreline, or flood review often take 3 to 6 months or longer. Commercial tenant improvements commonly take 2 to 5 months, and larger commercial, restaurant, assembly, change-of-use, or fire/life-safety projects can take 4 to 9+ months depending on completeness, agency comments, and resubmittal cycles.
Common Requirements
Common submittal items include a completed DPP building permit application, TMK number, project valuation, owner/contractor information, site plan, zoning data, floor plans, elevations, sections, structural plans and details, roof/framing information, energy code documentation, electrical/plumbing/mechanical plans when applicable, and manufacturer specifications for engineered products. Many Kailua projects also need drainage or grading information, wastewater/sewer approval, flood-zone documentation, coastal or shoreline review, Special Management Area confirmation if near the coast, and licensed design professional stamps for non-exempt work. Owner-builder and licensed contractor requirements under Hawaii law should be confirmed before applying.
Zoning Information
Kailua zoning is governed by the City and County of Honolulu Land Use Ordinance (LUO) and the zoning maps for Oahu. Residential areas commonly include R-series districts with rules for setbacks, height, lot coverage, yards, parking, accessory structures, ADUs, and ohana dwelling eligibility. Commercial and apartment zoning appears in village and corridor areas, while preservation, conservation, shoreline, flood, and Special Management Area overlays can add review requirements. Coastal Kailua parcels may also be affected by shoreline setbacks, FEMA flood zones, drainage constraints, and state coastal management rules.
Permit Costs
Honolulu building permit fees are generally based on the declared construction valuation, with separate charges possible for plan review, electrical, plumbing, mechanical, grading, wastewater, and other permits. Small residential repairs or trade permits may be in the $50 to $300+ range. Residential remodels and additions often range from several hundred dollars to several thousand dollars in permit and review fees depending on valuation and scope. New homes and larger commercial projects can run into the thousands or tens of thousands when building, plan review, trade permits, sewer/wastewater, and related agency fees are included. Always verify the current DPP fee schedule before budgeting.
Engineering Requirements
Engineer or architect stamps are typically required for new buildings, major additions, structural alterations, non-prescriptive framing, retaining walls, significant foundation work, commercial projects, change-of-use projects, fire/life-safety systems, and work involving flood-resistant or coastal design. A Hawaii-licensed structural or civil engineer may also be needed for roof-mounted solar structural evaluations, wind-resistant connections, elevated foundations in flood areas, drainage/grading designs, and retaining walls. Some simple one- and two-family residential work may qualify for code-prescriptive plans, but DPP can require sealed calculations or drawings when the scope exceeds prescriptive limits.
Local Code Adoption
Kailua follows the City and County of Honolulu building codes, which are based on the Hawaii State Building Code and Honolulu local amendments. Honolulu has used the 2018 International Building Code and related I-Codes with county amendments, including residential, electrical, plumbing, mechanical, energy, fire, flood, and administrative provisions. Applicants should confirm the currently effective DPP code cycle and local amendments at the time of submittal.
Typical Projects
Common Kailua permit projects include single-family home remodels, kitchen and bathroom renovations, lanais and decks, carports, roof replacements, solar PV and battery systems, ADUs and ohana units, swimming pools, retaining walls, drainage improvements, coastal repairs, flood-elevation improvements, restaurant and retail tenant improvements, and small commercial build-outs in Kailua town.