Why can't I just look this up?
Because for most southern New Hampshire towns there's no reliable published answer to look up.
Third-party guides covering this region tend to describe the position in general terms, saying a city is considering regulations or that its rules are evolving, without citing an ordinance. Where they do give specifics, they frequently disagree with each other, and some carry factual errors on verifiable points like the state tax rate.
There's a structural reason for the vagueness. Many of these towns haven't adopted a dedicated short-term rental ordinance at all. In a permissive zoning framework, that absence doesn't mean short-term rentals are allowed. It means the answer lives inside the definitions of the general zoning ordinance, and reading it requires actually reading it.
Ordinances also change at March town meeting every year, which means any summary has a shelf life of about twelve months.
What decides the answer?
The ordinance's definitions, more often than any provision that mentions short-term rentals by name.
Residential districts typically permit "dwelling units." So the legal question becomes whether renting to a stream of paying guests still counts as a dwelling unit under that specific town's definition.
Two New Hampshire Supreme Court decisions show how much the drafting matters. In Working Stiff Partners, LLC v. City of Portsmouth, 172 N.H. 611, decided September 27, 2019, the Court held short-term rental use was not permitted as a principal use in a residential district, because Portsmouth's definition of "dwelling unit" expressly excluded transient occupancies. In Town of Conway v. Kudrick, No. 2022-0098, decided May 2, 2023, the Court reached the opposite result, because Conway's definition contained no requirement about how long occupants stay.
Same court, same general question, opposite outcomes, driven entirely by wording.
A third case, Appeal of Hoekstra, 2024 N.H. 23, decided May 14, 2024, found that language in Sunapee's ordinance written as a restriction had actually created new permitted uses. The New Hampshire Municipal Association's read was that towns now have to re-examine provisions they'd assumed were restrictions.
Give me a southern NH town or a specific address and I'll pull the current ordinance language and the definitions that decide it. Two business days, no obligation.
The method, step by step
This works for Nashua, Concord, Salem, Derry, Windham, Merrimack, Londonderry, Hudson, Goffstown, Amherst, Milford, or any other New Hampshire municipality.
- Find the zoning district for the exact address on the town's zoning map. Not the town, the district. Rules commonly differ between districts within one municipality.
- Read the permitted uses for that district in the current ordinance.
- Read the definitions section. Look specifically at "dwelling unit," "transient," "lodging house," "tourist home," and any durational language about length of occupancy. This is where the answer usually lives.
- Look for a separate short-term rental chapter, registration requirement, or fee schedule. Some towns have one and many don't.
- Call the planning or code enforcement office. Ask a precise question: is non-owner-occupied short-term rental a permitted use in this district? Ask them to point you to the language rather than accepting a yes or no.
- Check recent town meeting warrant articles for pending or recently adopted zoning amendments. New Hampshire towns amend in March.
- Register for the Meals & Rooms tax with the NH Department of Revenue Administration regardless of what the town requires.
Get the town's answer in writing where you can. A verbal yes from a busy counter clerk offers limited protection if enforcement comes later.
Does owner-occupancy change things?
Frequently, and it's worth asking about specifically rather than assuming.
Both major New Hampshire Supreme Court cases concerned non-owner-occupied use, and many ordinances treat a home you live in differently from one you don't. Renting a spare room while living on site is often a different zoning question than operating a whole house as a rental business.
For anyone buying purely to operate, this is usually the question most likely to produce a hard no, so resolve it first.
What if the town says no?
Take the answer seriously and price it into the decision.
A property that can't legally operate as a short-term rental isn't necessarily a bad purchase. It's a different purchase, and it has to work on long-term rental numbers instead. Southern New Hampshire's long-term rental market is genuinely strong, with statewide rental vacancy running about 3.9% in early 2025 against the roughly 5% New Hampshire Housing treats as balanced.
What doesn't work is buying on short-term rental projections and discovering the zoning answer afterward. The difference between the two income models is large enough to turn a good deal into a bad one.
