River Birch Builders
Construction company in Portsmouth, NH 03801
About this company
River Birch Builders is listed as a construction company at 1039 Islington St in Portsmouth, New Hampshire, in Rockingham County. It is one of 35 general contractors in ZIP 03801.
Other construction companies nearby
Profile Homes953 Islington St, Portsmouth
0.1 mi(603) 433-2464
Seacoast Paving23 Sims Ave, Portsmouth
0.3 mi(603) 436-3016
Becksted Associates1395 Islington St, Portsmouth
0.3 mi(603) 431-1587
Foundry Place165 Deer Street, Portsmouth
1.0 mi(207) 363-0400
Three Phase Line Construction Inc.127 Parrott Ave, Portsmouth
1.1 mi(603) 755-9610
Housing market around ZIP 03801
Figures describe the local area, not this company.
Typical home value$802,000+3.5% past year · +96% in 10 years
Typical rent$2,976+2.6% past year
12-month value outlook+1.4%
New homes permitted, 20251,876Rockingham County
Days to sale agreement14Boston metro · 15 a year ago
Listings with a price cut23.7%Boston metro
Sale price vs list101.3%Boston metro
New construction sales302Boston metro, Aug · +23% from last year
Source: Zillow (home values, rent, outlook and metro sales), data through Sep 2026. Permits: U.S. Census Bureau.
Typical home value, last 10 years
Source: Zillow Home Value Index, Sep 2026.
Local building angle: Rockingham County permitted 1,876 new homes in 2025, including 711 apartment units. 13% of the homes in this ZIP were built since 2000.
Local figures are estimates from public records and Zillow housing data, updated regularly.