Foundations Cost in Portsmouth, NH in 2026
Most Foundations projects in Portsmouth, NH cost between $3,000 and $30,000. The typical price is $9,000.
Portsmouth prices track the national average closely. Costs here are close enough to the national picture that the adjustment barely moves the number.
What drives the price
- Crack injection versus piering versus full replacement
- Soil type and water table
- Access for equipment
- Engineering report requirements
Usually included
- Excavation and equipment
- Repair materials and labour
- Backfill and grading
Usually extra
- Structural engineer report
- Interior finish repair
- Landscaping restoration
Foundation repair contractors in Portsmouth, NH
Businesses listed on Google near Portsmouth, NH. We are not affiliated with them and do not vet them — always confirm licensing and insurance before hiring.
Erickson Foundation Solutions
4.8(757 reviews)
14 Clement Rd, Hudson, NH 03051
603 Basement Solutions
4.9(263 reviews)
213 Haverhill Rd Unit 8B, East Kingston, NH 03827
Reliable Basement Waterproofing
5.0(174 reviews)
107 Main St, Plaistow, NH 03865
NH Dry Basement
4.9(77 reviews)
110 Isinglass Cir, Barrington, NH 03825
Arta Foundation Repair
4.8(52 reviews)
51 Harvey Rd, Londonderry, NH 03053
Parkway Masonry&Construction,Chimney repairs, Foundation Waterproofing
4.9(42 reviews)
20 Foundry St, Concord, NH 03301