The complete guide

The NH ADU Playbook

One page with everything that matters: what the 2025 law actually lets you build, what it costs, what it rents for, whether it fits your lot, how long it takes, and how people pay for it. Written by the builders — no fluff, sources you can check.

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The law, every price, the rental math, setbacks, timelines, and financing — one page, no fluff. Leave your name and email and it unlocks right here. We don't spam; you'll hear from a real person only if you ask us to look at your lot.

Common questions

Is the playbook really free?

Yes. Leave a name and email and the full guide unlocks on this page. We don't run drip campaigns — you'll hear from a real person only if you ask us to look at your lot.

Does this apply to my town?

The by-right law (RSA 674:71-73) applies statewide, to every single-family lot in New Hampshire. Town-specific setbacks and district rules vary — our towns directory covers them town by town, read from each ordinance.

Are the prices in the guide real?

They're the same all-in prices published on our models pages — design, permits, site work, foundation, and build. The two things that vary by property (town utility tap fees and major site surprises like ledge) are called out explicitly.

Does your lot qualify? Find out for free.

We check your parcel against the by-right law and your town's setbacks — no cost, no obligation.

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