Tiny homes in Derry, New Hampshire — zoning rules, THOW parking, builder costs, and what you need to know before buying.
Last researched April 2026
Derry is a commuter-friendly town on the I-93 corridor with quick access to Manchester, Nashua, and Greater Boston. Its lakes — Beaver Lake and Island Pond — and rail-trail network give a small-town New England feel at lower land prices than coastal or seacoast towns. Derry sits in IECC climate zone 5A, slightly milder than central New Hampshire but still requiring a well-insulated envelope, snow-load-rated roof, and freeze-protected plumbing for a tiny home to function through winter. Annual snowfall typically runs 50-60 inches. Summers are warm and humid, winters are cold with frequent storms, and the region has a strong culture of outdoor recreation year-round. For tiny home dwellers, Derry offers a middle ground: cheaper land than Seacoast NH, a shorter commute to Boston than Concord, and enough rural edges for quieter sites.
Derry, New Hampshire is a town of roughly 34,000 in Rockingham County on the I-93 corridor about 40 miles north of Boston. Tiny homes on foundations fall under the Derry Zoning Ordinance (Chapter 165) together with the statewide ADU framework (RSA 674:71-73). Historically Derry's local ADU ordinance capped ADU size at 800 square feet, allowed up to two bedrooms, required owner-occupancy of either the primary dwelling or the ADU, and did not permit detached ADUs. As of April 2026, HB 577 (Chapter 197, Laws of 2025, effective July 1, 2025) preempts those stricter local rules: Derry must now allow one ADU — attached or detached — by right in any zone that permits single-family dwellings, cannot cap the ADU below 750 square feet, and cannot impose zoning rules stricter than those applicable to single-family homes. New Hampshire's 2021 IRC adoption (effective October 15, 2025) includes Appendix Q, which provides a building code pathway for tiny homes of 400 square feet or less excluding lofts. THOWs are treated as recreational vehicles and are not permitted for year-round residency on typical Derry lots; full-time THOW living is generally restricted to licensed RV parks. Older local ordinance language may not yet match state preemption, so confirm current interpretation directly with the Town of Derry. Verify current requirements with your local planning department before purchasing land or beginning construction.
Verify current requirements with your local planning department.
Derry's local ADU regulations (Chapter 165 of the Zoning Ordinance) have historically capped ADUs at 800 square feet, limited them to two bedrooms, required owner-occupancy of the primary residence or the ADU, and prohibited detached ADUs. HB 577 (2025) changes the baseline statewide: municipalities must allow at least one ADU — either attached or detached — by right in all zones permitting single-family dwellings, and cannot cap living area below 750 sq ft or impose stricter zoning rules than apply to single-family homes. As a result, Derry's detached-ADU prohibition is preempted, though the town may still regulate height, setbacks, and design through standards equally applied to single-family homes. A foundation-built tiny home that meets IRC Appendix Q (400 sq ft or less, excluding lofts) may qualify as a detached ADU under the new framework. THOWs do not qualify as ADUs under state law. Since Derry's local ordinance language may not yet fully reflect HB 577, applicants should confirm how the town is interpreting the statute at the time of filing. Contact the Derry Planning Department at (603) 432-6105 for current guidance.
Communities, RV parks, and parking options in and near Derry.
Under New Hampshire practice, a tiny house on wheels is classified as a recreational vehicle, must be mounted on a registered and inspected chassis, and is not considered a year-round dwelling. In Derry, this means a THOW cannot be legally occupied full-time on a standard residential lot. RV regulations apply to short-term siting. For longer-term THOW living near Derry, the options are licensed RV parks and campgrounds. Tuxbury Pond RV Resort in South Hampton (roughly 30 miles east) offers extended stays of 185+ days with direct booking and discounted pricing on stays of 28 days or more, and also hosts a small tiny-house rental village through its tuxburytinyhouse.com operation. Friendly Beaver Campground in New Boston (about 25 miles west) runs year-round with full hookups. The cleaner path to permanent tiny-home living in Derry is a foundation-built tiny home that meets IRC Appendix Q, which may be permitted as a detached ADU under HB 577 and Derry's zoning ordinance. Contact the Derry Planning Department at (603) 432-6105 to confirm the current application process.
rv-park
South Hampton, NH (~30 miles from Derry)
Thousand Trails RV resort with a dedicated tiny-house rental village. Offers extended stays of 185+ days booked directly with the campground and discounts on 28+ day stays.
rv-park
New Boston, NH (~25 miles from Derry)
Year-round campground with full-hookup RV sites (30/50 amp), cabins, and seasonal sites; one of few year-round options within easy drive of Derry.
Hampstead, New Hampshire
Backcountry Tiny Homes is a Hampstead, New Hampshire tiny-home builder with a public tour location and an ordering process for model-based or fully custom tiny homes. Its site publishes current build-shop tour information, April 2026 lead times, and a payment schedule for design and construction phases. The company also states that turnkey homes receive NOAH+ and NOAH Dwelling certification and are inspected across trailer foundation, framing, insulation, electrical, plumbing, sewer, propane, egress, and related construction stages.
Service areas: New Hampshire
Fitzwilliam, New Hampshire
New England-based NOAH-certified tiny home builder delivering across NY and New England. Builds both THOW and foundation models with rigorous structural, energy efficiency, and legal compliance standards. NOAH certification simplifies financing and insurance for buyers. Custom homes available alongside in-stock models.
Service areas: New York, New Hampshire, Vermont, Massachusetts, Maine, Rhode Island, Connecticut
Portland, Maine
Portland, Maine design-build firm launched in 2013 by Kaplan Thompson Architects, offering net-zero-ready prefab and modular homes. Four purpose-built ADU designs (Torrey, Highland, Sterling, and Jordan) start around 420 sq ft and suit backyard placements. Typical turnkey cost runs $450–$600 per sq ft. Serves all of New England, the Mid-Atlantic, and as far west as Ohio through manufacturing partners in Maine, New Hampshire, and Pennsylvania.
Service areas: Maine, New Hampshire, Vermont, Massachusetts, Connecticut, Rhode Island, New York, New Jersey, Pennsylvania, Ohio
Pembroke, New Hampshire
Kinstruct Tiny Homes is a Pembroke, New Hampshire ADU and tiny-home builder focused on custom, on-site accessory dwelling units and standalone tiny homes. The company describes its work as turn-key design, permitting, and construction for attached or detached ADUs built on permanent foundations rather than prefab units shipped from a factory. Its public materials and New Hampshire Home Builders Association profile identify Kinstruct as a local New Hampshire team serving homeowners who need aging-in-place, rental, guest, or family housing on existing residential property.
Service areas: New Hampshire
Dyer Brook, Maine
Dyer Brook, Maine manufacturer of custom tiny homes on wheels (THOW), 400 sq ft or less, founded in 2016 and acquired by Hancock Lumber in October 2024. Offers 25+ customizable packages — including the flagship Baxter 10×38 model — with options for windows, siding, trim, and interior finishes. Builds are engineered for Northern Maine winters and delivered fully finished. Models start around $100,000, with the Baxter starting at $149,000 as of May 2026.
Service areas: Maine, New Hampshire, Vermont
Lyndeborough, New Hampshire
Tiny Houses of NH is a Lyndeborough, New Hampshire builder offering custom luxury tiny houses crafted in the state. Its official site emphasizes handcrafted, energy-efficient homes for downsizing, backyard bungalow, short-term rental, and extra-family-space uses, with a four-step process from early design through delivery. The company publishes a Lyndeborough address, New Hampshire phone number, and project galleries showing recent tiny-house builds.
Service areas: New Hampshire
A comparison between tiny-home living and conventional homeownership in Derry.
Tiny home path
Traditional home path
Potential monthly savings
$1,900-$2,900/mo
Source: Zillow, RentCafe, NH Housing (Q1 2026 estimates)
Verified links for planning, permitting, and community connections in Derry.
No. As of April 2026, New Hampshire treats THOWs as recreational vehicles, and Derry does not allow year-round residential occupancy of an RV on a standard residential lot. Full-time THOW living near Derry generally requires a licensed RV park such as Tuxbury Pond or Friendly Beaver Campground.
Yes. HB 577 (Chapter 197, Laws of 2025, effective July 1, 2025) requires every New Hampshire municipality to allow at least one ADU — attached or detached — by right in zones that permit single-family dwellings. This preempts Derry's prior ordinance language limiting ADUs to attached units.
Yes. A foundation-built tiny home that meets the 2021 IRC with Appendix Q (400 sq ft or less, excluding lofts) has a clear code pathway in New Hampshire as of the October 15, 2025 code update and can qualify as a detached ADU under HB 577.
Under HB 577 (2025), Derry cannot cap ADU living area below 750 sq ft. Total living area can be up to 950 sq ft unless the town authorizes more. Derry's prior 800 sq ft cap is superseded by the state floor.
Derry is in IECC climate zone 5A with 50-60 inches of annual snowfall. Plan for a high-R-value envelope, a roof engineered for local ground snow loads, freeze-protected plumbing, and a reliable heating source — propane, mini-split heat pump with backup, or wood are common choices in southern New Hampshire.
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