When Ian Kealoha decided to build a rental unit on his Wahiawā property four years ago to help offset his mortgage, he probably didn't expect his journey would highlight why Honolulu's affordable housing strategy isn't working as planned. After navigating more than four years of permits and construction hurdles, Kealoha's experience represents the broader challenges facing the city's efforts to expand housing options through accessory dwelling units (ADUs).
The tension reached a breaking point recently when the Honolulu City Council passed a resolution condemning new state-mandated ADU rules. According to Honolulu Civil Beat, council members said that while they appreciate the sentiment of tackling the housing crisis, the measures overstepped into their territory and were too broad.
The Numbers Tell a Different Story
The reality behind Honolulu's ADU program reveals a stark disconnect between expectations and results. A city plan from 2014 estimated between 17,000 and 22,000 rental units could eventually be built through ADUs, with at least 250 built annually in initial years. However, only 1,320 ADUs have actually been constructed since then, averaging little more than half of the yearly goal.
Department of Planning and Permitting Director Dawn Takeuchi Apuna didn't mince words about the program's performance in an April interview, calling it "not really a super successful program," as reported by Civil Beat.
State Mandates Meet Local Resistance
The controversy stems from new state legislation allowing two ADUs per residential lot, which forced counties to develop regulatory frameworks. Honolulu implemented these requirements through its updated Land Use Ordinance late last year. The disconnect between state expectations and local realities is striking—while legislators passed the law requiring counties to allow two ADUs to encourage the practice, the city struggles to persuade people to build just one.
Senator Stanley Chang, one of the bill's sponsors, suggested there was "a disproportionate amount of hubbub over the bill relative to its likely effect," noting that homeowners had been allowed to build one ADU for almost 10 years without major problems, as mentioned on Civil Beat.
The Permitting Challenge
Multiple factors contribute to the slow adoption rate, starting with a cumbersome permitting process despite streamlining efforts. Property owners must navigate complex infrastructure requirements, with no building permits issued unless adequate infrastructure exists to support new units. The Department of Planning and Permitting requires confirmation from multiple agencies affirming infrastructure capacity before approving permits.
Some residents also worry about changes an influx of renters could bring to their neighborhoods, particularly in traditionally single-family areas. Master-planned communities like Mililani and Villages of Kapolei have homeowners' association rules that effectively prohibit ADUs, with covenants typically allowing only one residence per lot.
Broader Housing Struggles
The ADU challenges occur against the backdrop of other underperforming affordable housing initiatives in Honolulu. The city's Bill 7 program, designed to fast-track affordable housing projects by approving or denying permits within 90 days, has also fallen short of expectations since becoming law in 2019. As detailed by Civil Beat, Bill 7 projects have been permitted as slowly—and sometimes more slowly—than other commercial projects.
The median permitting time for commercial projects reached nearly 13 months as of the first quarter of 2025, highlighting systemic issues within the Department of Planning and Permitting that extend far beyond ADUs.
Finding Middle Ground
City Council member Tyler Dos Santos-Tam acknowledges the limitations while maintaining optimism about ADUs as part of a broader strategy. "I'm certainly not going to pretend that this is solving the problem," he said, describing ADU construction as "an important part of an 'all of the above' strategy of boosting the supply of housing," as per Civil Beat.
Housing policy advocates see untapped potential despite current challenges. Arjuna Heim, director of housing policy at the Hawaiʻi Appleseed Center for Law and Economic Justice, noted that ADUs could benefit people looking to downsize by moving into the ADU while renting out their main house. One policy advantage is that additional units don't require public approval through City Council or neighborhood board hearings, which sometimes derail housing proposals.
Looking Ahead
As Honolulu continues facing severe housing shortages, the tension between state mandates and local implementation reveals the complexity of addressing Hawaii's housing crisis. The City Council's recent resolution condemning the state's ADU expansion reflects broader frustrations with top-down housing solutions that may not account for local realities.
