Gov. Ayotte signed House Bill 1588 on July 15, and it changes what a town can and can’t do about new housing on commercial land. Multi-family housing is now allowed “by right” in commercial zones statewide, meaning a developer doesn’t need a special permit to build it. The Concord Monitor has the breakdown: no density caps, parking capped at one space per unit, and towns can only regulate physical dimensions like height and setbacks, nothing stricter than what applies to a commercial building.
This is the second bill in two years to chip away at local control here. House Bill 631 passed in 2025 and required towns to allow multi-family in commercial zones, but it left them some room to maneuver: density caps, conditional use permits, the usual tools a planning board uses to slow a project down or shape it. HB 1588 took most of that away. If a town tries to block a qualifying project anyway, the developer can now go after attorney’s fees.
There’s a companion piece too. House Bill 1010 lets a town require an infrastructure study before a project moves forward, water, sewer, roads, the usual concerns. But it also hands the developer a “right to remedy,” meaning they can just pay to upgrade the infrastructure themselves instead of getting denied over it. The study becomes a cost estimate, not a stop sign.
What this actually means depends on what you own. If you own a small commercial parcel, a strip mall, an old office building, a vacant lot zoned commercial, this law just made that land more valuable. Multi-family housing wasn’t an option there a year ago. Now it’s a right, not a negotiation. If you live near commercial-zoned land, expect projects to move faster and with fewer places to raise an objection than you’re used to. The six-month planning board fight that used to be normal in this state just got a lot shorter.
Towns are still sorting out how much of their old playbook survives this. My read: not much. The state made a clear choice to trade local control for housing supply, and every commercial parcel in every town just got pulled into that trade whether the town wanted in or not.
Own commercial-zoned land, or wondering what this law does to the value of a property near one? Not a Zestimate, an actual number based on your parcel and what’s now allowed on it. Call or email me and I’ll walk you through it.
