Increase allowable ADU area to create more housing options

The following testimony was submitted by the Grassroot Institute of Hawaii for consideration by the Lāna’i Planning Commission on Sept. 17, 2025.
_____________

Sept. 17, 2025, 5 p.m.
Remote meeting

To: Lāna’i Planning Commission
       Reynold Gima, Chair
       Nicole Alboro, Vice Chair

From: Jonathan Helton, Policy Analyst
           Grassroot Institute of Hawaii

RE: Item A(2) — A BILL FOR AN ORDINANCE REVISING THE MAXIMUM GROSS COVERED FLOOR AREA REQUIREMENTS FOR ACCESSORY DWELLINGS

Aloha Chair Gima, Vice Chair Alboro and other members of the Commission,

The Grassroot Institute of Hawaii supports item A(2), which would increase the maximum allowable living area for accessory dwelling units.

In particular, the draft bill would change the size limits for ADUs to 720 square feet for all lots smaller than one-half acre. It would also amend the maximum floor area of decks, patios and lanais attached to the ADUs.

Currently, ADUs are limited to 500 square feet for lots smaller than 7,500 square feet and to 600 square feet for lots between 7,500 and 9,999 square feet.

The additional square footage would enable homeowners to add an extra bedroom to existing or planned ADUs, which could provide more space for growing families or add housing for renters.

In short, this bill would give Maui residents another tool to help address the county’s ongoing housing crisis.

Thank you for the opportunity to testify.

Jonathan Helton
Policy Analyst
Grassroot Institute of Hawaii

Subscribe to our free newsletter!

Get updates on what we're doing to make Hawaii affordable for everyone.
Subscribe
Want more?

Get content like this delivered straight to your inbox. We’ll also send updates on what we’re doing to make Hawaii affordable for everyone.

Recent Posts
Grassroot Institute of Hawaii logo