Short-Term Rental Rules in Portsmouth, NH (2026)

Portsmouth Rental Rules: The Short Answer

As of October 2026, Portsmouth regulates short-term rentals through the wording of its zoning ordinance rather than through a dedicated short-term rental law or registration program. We read the current ordinance (posted by the city as amended through September 28, 2026) and found no definition of "short-term rental" or "homeshare" in it. What it does contain is the sentence the state's highest court relied on in 2019: a "dwelling unit" does "not include such transient occupancies as hotels, motels, rooming or boarding houses."

In practice, that means:

• Whole-home nightly rentals with no one living there were held not to be a permitted use in a residential district in the one case the court decided.
• Owner-occupied room rentals may fit the ordinance's "bed and breakfast" use, which is allowed in some districts, by special exception in others, and prohibited in the rest.
• Longer furnished stays were not ruled on. The court said "transient" is about how long a stay lasts, but it did not set a number of days.

This page is informational. Portsmouth is in Rockingham County, which is outside the New Hampshire counties New England Host Co serves, so we do not manage homes there. The case still shapes how many New Hampshire towns read their codes.

Working Stiff Partners V. City of Portsmouth (2019)

The case is Working Stiff Partners, LLC v. City of Portsmouth, 172 N.H. 611, decided by the New Hampshire Supreme Court on September 27, 2019 (docket No. 2018-0491). The facts, as the court recited them:

• An LLC owned a four-bedroom house on Lincoln Avenue. Its two owners lived next door, on a separate lot. No one lived in the rental as a primary residence.
• The house was listed on Airbnb with daily rates, as suitable for family parties, wedding parties and corporate stays, for up to nine guests.
• The city received complaints, sent a letter suggesting the owners check with the Planning Department, and later the code enforcement officer issued a cease and desist order.
• The Zoning Board of Adjustment upheld the order, the Superior Court affirmed, and the Supreme Court affirmed.

The property was in the General Residence A (GRA) district, where single-family and two-family dwellings are permitted and hotels, motels, inns and boarding houses are prohibited. Portsmouth's ordinance is "permissive": a use not listed as allowed in a district is not allowed. So the question was whether a nightly rental was still a "dwelling unit" use.

The court said no. It looked at what hotels, motels, rooming houses and boarding houses have in common and found "the provision of lodging to paying guests on a daily basis." In its words, using the property "for daily rentals to paying guests constitutes a 'transient occupanc[y]' similar to a hotel, motel, rooming house, or boarding house." It also rejected the argument that the ordinance was unconstitutionally vague.

Two limits matter for owners. In a footnote, the court said the case did not address whether short-term rentals could be allowed as an accessory use to a permitted principal use (for example, an owner who lives in the home), and it did not involve a variance application. And the city attorney told NHPR at the time that a different ordinance in a different place might lead to a different result.

What the Portsmouth Ordinance Says Today

We downloaded the city's zoning ordinance on October 7, 2026. The key language is unchanged from the version the court read in 2019.

The Table of Uses in Section 10.440 lists where each lodging use is permitted (P), allowed by special exception (S) or prohibited (N) by district. Bed and Breakfast 1 is prohibited in some residential districts and allowed by special exception or permitted in others. Look up your parcel's district, read that row, then confirm with Planning.

The 2019 Short-Term Rental Draft That Did Not Become Law

Portsmouth did try to write a short-term rental rule. A draft dated October 17, 2019 proposed two new uses:

• Homeshare: renting up to 5 rooms in an owner-occupied home for less than 30 consecutive days, with the owner living there.
• Short-term rental: renting an entire dwelling unit for less than 30 consecutive days at a time and no more than 120 total days in any 12-month period.

The Planning Board discussed it at a work session that night. The minutes record the planning director saying that, at the time, a rental of less than 30 days was considered a bed and breakfast, and board members raising concerns about whole-home rentals and suggesting the homeshare piece go first. Neither "homeshare" nor "short-term rental" appears in the ordinance as amended through September 28, 2026, so as of October 2026 neither proposal is in force.

In 2026 the city's focus has been housing. A July 2026 draft Housing Action Plan went from the City Council to the Planning Board, and the Council has asked for a comprehensive update of the zoning ordinance. We found no short-term rental proposal in that draft, but a full rewrite is exactly where new rental rules could appear, so check again before you buy or list.

State Rules That Still Apply in Portsmouth

New Hampshire has no statewide short-term rental license; our New Hampshire short-term rental laws page covers the state picture and recent bills. The state tax does apply:

• Meals and Rooms (Rentals) Tax: under RSA 78-A:6 the rate is 8.5 percent. RSA 78-A:3 defines a short-term rental as renting rooms in a residential unit "for tourist or transient use for less than 185 consecutive days."
• Platform collection: Airbnb's help center says it collects the 8.5% tax on New Hampshire reservations of 184 nights and shorter, on the listing price including cleaning and guest fees.
• Your part: bookings outside the platform, and the operator license, are still your responsibility. Our New Hampshire rooms tax guide explains the filing side.

Notice the mismatch: a stay of 60 nights is still "short-term" for the state tax, but whether it is "transient" under Portsmouth zoning is a separate question the court did not answer.

Before You List a Portsmouth Home

1. Find your zoning district and read the lodging rows of the Table of Uses (Section 10.440).
2. Call Planning and Sustainability at City Hall, 1 Junkins Avenue, 3rd floor, (603) 610-7216. Describe your exact plan: whole home or rooms, whether you live there, typical stay length. Ask whether it is permitted, needs a special exception, or is not allowed, and write down who answered.
3. Ask about the Zoning Board of Adjustment if your plan needs a special exception or a variance. The 2019 case did not involve a variance application.
4. Check condo documents. Many Portsmouth homes are condos, and association rules can be stricter than zoning. See HOA and condo rules.
5. Consider longer stays. If nightly rentals do not fit, furnished stays for relocating professionals may, subject to what Planning tells you. Our mid-term rentals guide covers the tradeoffs.
6. Sort the state tax before your first booking.

This page is general information, not legal or tax advice; check with the City of Portsmouth or a professional before you rent.

Where New England Host Co Fits

We manage homes in Strafford County on the Seacoast (Dover and Durham), not in Portsmouth. If your rental is in Dover, Durham or elsewhere in our area, start with our Seacoast page or the owner hub. If you are unsure whether your town is covered, call (978) 672-4578 and we will tell you plainly.

FAQ

Are Short-Term Rentals Legal in Portsmouth, NH?

There is no short-term rental category in Portsmouth's zoning ordinance as of October 2026. In 2019 the NH Supreme Court upheld the city's ruling that a whole-house nightly rental in the GRA district was a transient occupancy, not a permitted dwelling use. Owner-occupied bed and breakfast uses are allowed in some districts. Ask the Planning Department about your address.

Does Portsmouth Require a Short-Term Rental Permit or Registration?

We found no short-term rental registration program on the city's site or in the ordinance. The relevant approvals are zoning ones: a use permitted in your district, or a special exception or variance from the Zoning Board of Adjustment.

Can I Rent My Portsmouth Home for 30 Days or More?

The court said "transient" is about the length of a stay but did not set a cutoff, and the 2019 draft's 30-day line was never adopted. Ask Planning how a furnished stay of your intended length would be classified. Stays under 185 consecutive days remain subject to the state's 8.5% rooms tax.

Does New England Host Co Manage Rentals in Portsmouth?

No. Portsmouth is in Rockingham County, outside our New Hampshire counties. We do manage homes in Dover and Durham on the Strafford County side of the Seacoast.