Zoning, building permits and septic rules in Epping, New Hampshire

At a glance

Building permit

Required; apply at the Epping Building Department¹⁵

Zoning

Set by the Town of Epping, not Rockingham County²⁶

Septic

NHDES approves plans; Epping's Building Official may inspect in the Groundwater Protection District⁴⁷

Living in an RV

Not allowed in a stored RV³

Tiny homes

State law lets a town permit them where single-family homes are allowed; Epping's own rule not confirmed⁸

Manufactured homes

Allowed with conditions; no new units in two zones⁹

Rural Residential minimum lot

88,000 sq ft⁶

Who to call

Contact details are copied from each office’s official page and were checked against it on October 24, 2026.

Do you need a building permit in Epping, NH?

Yes. New Hampshire law says the person responsible for covered construction must obtain a permit before starting work, and the permit may not be issued if it would not result in compliance with the state building code¹. Epping's Building Department takes the applications, and the town's Building Permits page lists separate forms for building, demolition, electrical, plumbing, energy code, septic and sign permits⁵.

The town must approve or deny a completed application within 30 days, or 60 days for nonresidential projects or residential projects of more than 10 dwelling units¹⁰. We could not confirm Epping's current fee schedule; the Building Department will email the fee once it has your completed forms. Rockingham County does not issue building permits for land inside Epping².

Who handles building permits and inspections in Epping, and how do you reach them?

The Town of Epping Building Department, at 157 Main Street, Epping, NH 03042, handles building permits for land inside town limits⁵. Call 603-679-5441 or email buildingassistant@townofepping.com⁵.

The town's zoning ordinance also requires the Building Inspector to certify the safety of a temporary structure before it is placed or built, and a permit is required for all temporary structures¹¹. New Hampshire lets a town require a certificate of occupancy before a new building is used; we could not confirm whether Epping does, so ask the Building Department¹².

Does Epping have zoning, and what does it mean for lot size, RVs and manufactured homes?

Epping zones for itself through its own zoning ordinance; Rockingham County has no zoning powers inside its municipalities². Rules differ by district. In the Rural Residential Zone the minimum lot size is 88,000 square feet⁶. In the High Density Residential Zone the minimum lot is 20,000 square feet, maximum lot coverage is 40%, and maximum building height is 35 feet¹³¹⁴¹⁵.

Manufactured housing must sit on a permanent foundation or piers, be skirted, and meet current building codes and HUD standards, and no new manufactured housing may be established in the High Density Residential and Central Business Zones⁹. Multifamily and duplex units have minimum floor areas, starting at 450 square feet for a studio and 600 for a one-bedroom¹⁶. We could not confirm setbacks for single-family lots; read the ordinance or ask the Building Department.

How do septic permits work in Epping, NH?

Septic approval in Epping runs through the state. No one may build a sewage-producing building or a septic system without prior approval of the plans by the New Hampshire Department of Environmental Services, and local requirements stack on top of that minimum⁴. NHDES issues a construction approval and, before you use the system, an operation approval¹⁷. The state application fee is $450 per system¹⁸.

In Epping's Groundwater Protection District, a new on-lot system must meet local and state siting rules, be designed by a New Hampshire licensed designer and installed by a licensed installer, and the Building Official or agent may inspect before it is covered⁷. USDA rates only about 0.9% of soils in Rockingham County as not limited for a conventional drain field, so expect a site evaluation and possibly an engineered system¹⁹.

Can you live in an RV or tiny home on your land in Epping?

Not in an RV. Epping's zoning ordinance allows an RV to be parked only in an approved recreational camping park, an approved RV sales lot, or stored in the rear or side yard by the owner, and a vehicle so parked may not be used as living quarters³.

For tiny homes, New Hampshire lets a municipality permit a tiny house on a lot where single-family dwellings are allowed or as an accessory dwelling unit, subject to local land-use rules, with a limit of 600 square feet excluding lofts⁸. We could not confirm whether Epping's ordinance addresses tiny homes, so ask the Building Department before buying.

Building a home in Epping: the steps, in order

1. Check the zoning district and lot size for your parcel in the Epping zoning ordinance⁶.
2. Get septic plans designed by a New Hampshire licensed designer and approved by NHDES¹⁷.
3. Submit the building permit application and any electrical, plumbing and energy code forms to the Epping Building Department⁵.
4. Expect a decision within 30 days of a completed residential application¹⁰.
5. Request inspections before work is concealed²⁰.
6. Have the septic system inspected before it is covered or used²¹.
7. File the energy-code as-built certification before occupancy²².

What stays with Rockingham County and the state, and what to check before you buy

Rockingham County does not set zoning or issue building permits for land inside Epping². For land outside the town, see the Rockingham County page. Septic approval comes from the state in every town⁴.

Before you buy, confirm septic feasibility, ask the Building Department about wells, driveway permits and short-term rentals, because we could not confirm Epping's rules on any of them, and check subdivision rules if you plan to split a lot²³. Rockingham County's effective property tax rate is 1.6%²⁴.

Watch-outs

• We could not confirm Epping's building permit fees, private well rules, driveway access rules or short-term rental rules; call the Building Department at 603-679-5441⁵.
• Epping's zoning ordinance regulates temporary structures, so a tent or shed used for living needs the Building Inspector's certification first¹¹.
• County and state-level lot-size and tax figures describe Rockingham County, not Epping parcels²⁴.

Sources

1. Section 155-A:4 Permit Required, quoted and re-checked
2. 2000 Signed and Approved Meeting Minutes — Rockingham County Housing and Community Development Plan, quoted and re-checked
3. Town of Epping Zoning Ordinances – 2023 (Town of Epping), quoted and re-checked
4. Section 485-A:32 Prior Approval; Permits, quoted and re-checked
5. Town of Epping Building Department (townofepping.com)
6. Town of Epping Zoning Ordinances – 2023 (Town of Epping), quoted and re-checked
7. Town of Epping Zoning Ordinances – 2023 (Town of Epping), quoted and re-checked
8. RSA 674:82 Definitions — Innovative Housing Structures, quoted and re-checked
9. Town of Epping Zoning Ordinances – 2023 (Town of Epping), quoted and re-checked
10. RSA 155-A:4 Permit Required, quoted and re-checked
11. Town of Epping Zoning Ordinances – 2023 (Town of Epping), quoted and re-checked
12. Chapter 155-A New Hampshire Building Code, quoted and re-checked
13. Town of Epping Zoning Ordinances – 2023 (Town of Epping), quoted and re-checked
14. Town of Epping Zoning Ordinances – 2023 (Town of Epping), quoted and re-checked
15. Town of Epping Zoning Ordinances – 2023 (Town of Epping), quoted and re-checked
16. Town of Epping Zoning Ordinances – 2023 (Town of Epping), quoted and re-checked
17. New Hampshire Department of Environmental Services (des.nh.gov)
18. Chapter 155-A New Hampshire Building Code, quoted and re-checked
19. Share of soils USDA rates "not limited" for a conventional septic drain field (SSURGO). A strict rating: the median county is about 6% and a tenth of counties are 0%, so a low figure means most lots need a site evaluation or an engineered system, not that septic is impossible. Cite it only with that caveat: Bolthole Index county data
20. Chapter 155-A New Hampshire Building Code, quoted and re-checked
21. Chapter 485-A Water Pollution and Waste Disposal, quoted and re-checked
22. Puc 1805.01 As-Built Construction Certification Required, quoted and re-checked
23. Chapter 485-A Water Pollution and Waste Disposal, quoted and re-checked
24. Effective property tax rate: Bolthole Index county data

Written October 24, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.