When a buyer asks me why Oahu prices stay high even when sales cool off, I start with a number most people never look at: how long it takes to get a building permit. A study of 60 U.S. cities, reported by Honolulu Civil Beat on October 7, put Honolulu near the slow end of the country, and the numbers explain a lot about the inventory I see every day.
What the study found about Honolulu
The research comes from economists at Princeton and the University of Chicago Booth School of Business (Evan Soltas, Leonardo D'Amico and Audrey Wang). Nationally, they found permit delays have roughly doubled since the early 2000s. A single-family permit that took about two months in 2002 now takes about four.
Honolulu's picture is rougher. Per the Civil Beat report, a permit for a 2,800-square-foot house averaged a little over two months in 2000 and more than 14 months by 2024. Another cut of the data, covering western cities from 2021 to 2025, put Hawaii single-family homes at about six months to permit and more than two years to build. Those two figures measure different things, so I would not quote either one as "the" wait. What both say is that Honolulu has sat in the slowest quarter of cities since at least 2015.
For a 20-unit building, the researchers found Honolulu runs about a year behind Columbus or Indianapolis, and linked that year to rents roughly a third higher. They were careful to say that is correlation, not proof of cause.
Why a buyer or seller should care
New supply is the release valve for any housing market. When a lot owner has to carry a property for a year or more before breaking ground, fewer projects pencil out, and the ones that do get priced to cover the carrying cost. That lands in the price of new construction, and it props up resale prices nearby because there are fewer substitutes.
More than once I've had a buyer tell me they would just wait for more homes to be built. I walk them through the timeline: even a project that starts today may not deliver for two years or more. If you are waiting for supply to fix affordability, plan on a long wait.
What the city says it is doing
The Department of Planning and Permitting told Civil Beat the study's Honolulu data runs from 2004 to 2025, mostly before its recent changes. Those include electronic plan review and the HNL Build permit platform.
The biggest change for anyone building: since September 1, 2026, CivCheck is required for eligible residential projects. According to DPP, that covers new construction, additions and alterations of single-family, two-family and duplex homes, plus accessory dwelling units and ohana units. Eligible applications that skip it are rejected at pre-application review. CivCheck is an AI-guided tool that flags problems before you submit. DPP says it does not replace official plan review and does not guarantee approval.
DPP reports that applicants who used the tool saved an average of 40.5 days in review. That is the city's own figure from the pilot, so treat it as a promising early number rather than a guarantee for your project.
How I use this with clients
- Building an ADU or ohana unit: I tell owners to budget time for CivCheck up front and talk to a licensed contractor or architect before they promise anyone a move-in date.
- Buying a lot or teardown: I ask what permits are already in hand. A property with approved plans is worth more than one with just an idea.
- Buying new construction: I ask the developer where the project sits in the permit process, and I keep the contract's completion dates and extension clauses in front of my buyer.
- Selling a home with unpermitted work: I bring it up before the listing goes live, because the buyer's lender and inspector will find it anyway.
FAQ
Will faster permitting bring Oahu prices down?
I would not bet on it soon. Even if review times improve, construction takes time, and it takes several years of added supply to move prices. I would not time a purchase around it.
Does CivCheck apply to a simple repair or a fence?
According to DPP, no. Fences, retaining walls, solar, EV chargers and general electrical or plumbing work are not covered, and neither are projects eligible for Quick Permits. Check with DPP if you are unsure.
Should I build an ADU on my lot?
It can make sense, but I start with the numbers: build cost, financing, rent, and how long the permit and construction will take. Talk to me before you spend money on plans.
This is general information, not legal, tax, insurance or financing advice.
Photo: Zetong Li on Unsplash.
Sources: Honolulu Civil Beat, Oct. 7, 2026; City and County of Honolulu DPP, CivCheck requirement; Hawaii News Now, Sept. 1, 2026.
Tony Kawaguchi, R(B), The Kawaguchi Group, eXp Realty. Hawaii broker, license RB-21841, 20+ years and $1B+ in Oahu sales, leading a team of 20+ agents. Thinking about building, buying a lot or buying new construction on Oahu? Call or message me and we will work through the real timeline together.