Rockingham County · New Hampshire

ADUs and site work in Hampton, NH

Hampton Beach is the ocean side. Lots west of the marshes are a different access problem than a cottage on the sand. Langone Site Services builds turn-key ADUs in Hampton and handles excavation, site work, and septic. We don't publish a New Hampshire septic starting price. Call (978) 987-0089.

County
Rockingham CountyCounty
ZIP code
03842ZIP code
Plans shortlisted here
3Plans shortlisted here
Verified district setbacks
On requestVerified district setbacks
Local rules

What Hampton actually allows.

Coastal limits on Hampton Beach depend on the lot, and we'll check yours.

The lot in Hampton.

Hampton sits in Rockingham County. Route 1A is the shore road, and the inland side of town is a separate road from the beach blocks. HB 577 is the New Hampshire ADU rule.

Setbacks

Setbacks in Hampton.

Hampton beach blocks and lots inland of the marsh do not share one setback. We'll read the district on your parcel.

On the ground

The dirt work behind a Hampton build.

ADUs in Hampton

The beach cottage and the marsh-side lot aren't the same pad. The Summit is 654 sq ft. The Washington is 896 sq ft and two stories. The Ossipee is 1,049 sq ft with a 2-car garage. The beach block can rule the garage plan out.

Price a Hampton ADU

Excavation in Hampton

Trucks in Hampton have to deal with beach-road traffic and the marsh side west of the ocean.

Excavation

Septic in Hampton

We'll check whether a Hampton lot is on town sewer or needs a septic design. Beach blocks and lots west of the marsh aren't the same job.

Septic installation

Site work in Hampton

Hampton site work is beach-road access and the lots west of the marsh. Phone (978) 987-0089 before you count on a beach-road day.

Site work
Nearby

Beyond Hampton.

Every town we cover is listed on the service area page.

Start here

Send us the address in Hampton.

We will read the ordinance against your parcel, look at what the ground will take for septic and access, and come back to you with a figure rather than a range.

Quick quote

Name, and a phone or email so we can reply.

FAQ

Straight answers.

Who builds ADUs in Hampton, NH?
Langone Site Services builds turn-key ADUs in Hampton. A cottage on Hampton Beach and a lot west of the marsh aren't the same pad. The Summit is $235,000 for 654 sq ft. The Washington is $305,000 for 896 sq ft and two stories. The Ossipee is $388,000 for 1,049 sq ft with a 2-car garage, and a beach block can rule that garage plan out. The Ossipee needs a town that allows that size.
Do you do excavation in Hampton?
Yes. Excavation and site work in Hampton are regular work, including beach-road access and lots on the marsh side west of the ocean. Ask about the access on (978) 987-0089.
Do you install septic systems in Hampton?
We'll check whether the lot is on town sewer or needs a septic design. No New Hampshire starting price and no flood elevation are published here. The lot sets the price.
Do you build custom homes in Hampton?
Yes. A custom Hampton house starts at $325 per sq ft, land extra. A cottage on the sand and a lot inland of the marsh are different contracts, and the dig is part of the same contract.
Are ADUs allowed in Hampton?
Hampton has to allow one ADU by right in single-family districts, and the town must permit a detached unit under HB 577, and it cannot cap size below 750 sq ft. Beach and marsh shoreland still apply. We read the ordinance before we pick a plan.
How do I get a quote in Hampton?
Call (978) 987-0089 to start a Hampton quote, or use the form. The office is open Monday through Friday 7:00 to 6:00 and Saturday 8:00 to 2:00.

Thinking about building in Hampton?

Tell us if the lot is on the shore road or inland of the marsh. dylan@langonesiteservices.com