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River Birch BuildersGeneral contractor in Portsmouth, NH

River Birch Builders is a general contractor at 1039 Islington St STE 11, Portsmouth, NH 03801, ranked #9 of 157 general contractors in Portsmouth and rated 5.0 from 26 Google reviews. Open Monday to Friday.

Portsmouth, NHUpdated 0 paid placements in any rankingHow we rank

Call (603) 418-8644Website ↗

Key facts

Key facts about River Birch Builders
Address1039 Islington St STE 11, Portsmouth, NH 03801Get directions
Phone(603) 418-8644
Websiteriverbirchbuilders.com
HoursMonday to Friday: 7:30 AM – 3:30 PM
Google rating5.0 from 26 Google reviews

Trades

Each trade shows the evidence we matched it on.

Service area

Serves Portsmouth and 11 towns within 25 miles: Rye, Stratham Station, Newmarket, Durham, Hampton, Dover, Exeter, Seabrook, Somersworth, Kingston and Barrington.

Based in Portsmouth, NHView on map

Opening hours

Opening hours for River Birch Builders
DayHours
Monday7:30 AM – 3:30 PM
Tuesday7:30 AM – 3:30 PM
Wednesday7:30 AM – 3:30 PM
Thursday7:30 AM – 3:30 PM
Friday7:30 AM – 3:30 PM
SaturdayClosed
SundayClosed
  • Open evenings — no
  • Open Saturdays — no
  • Open Sundays — no

Typical general contracting prices

Typical general contracting prices
JobLowTypicalHigh
Kitchen remodelPer project: typical range of customer-reported remodels (about $75 to $250 per sq ft). US national range × 1.02 New England factor (2025 Cost vs. Value Report)$14,840$27,440$42,320
Bathroom remodelPer bathroom: typical range of customer-reported remodels. US national range × 1.05 New England factor (2025 Cost vs. Value Report)$7,010$12,810$18,620

Market ranges for the trade, checked October 2026, not a quote from this business. Ask for a written estimate.

Compare nearby general contractors

River Birch Builders compared with nearby businesses
BusinessRankCR ScoreGoogle ratingLicense verifiedSaturdaySundayDistance away
River Birch Builders (this business)—595.0 (26)—NoNo
Northwoods property services, LLC#7594.9 (38)—YesYes24.9 mi
Royce Works, LLC#8595.0 (28)—YesYes14.8 mi
Eric's Maintenance & Mobile Home Services#10594.6 (102)—NoNo10.5 mi

See all 157 ranked general contractors in Portsmouth

Reviews

ContractorsRanked reviews

No ContractorsRanked reviews yet

Google

5.0from 26 Google reviews

Hired River Birch Builders? Write a review

Questions about River Birch Builders

How is River Birch Builders ranked in Portsmouth?

River Birch Builders is ranked #9 of 157 general contractors in Portsmouth by CR Score, with 59 out of 100 as of October 2026. The score weighs reputation, credentials, review volume, recency, availability, trade focus, proximity, claimed profile, partnered and ContractorsRanked reviews. No business can pay to change its rank.

What are River Birch Builders’ hours?

River Birch Builders is open Monday to Friday. Its listed hours are Monday to Friday, 7:30 AM – 3:30 PM. It is closed on Saturdays and closed on Sundays. Hours come from the business listing; holiday hours may differ.

What areas does River Birch Builders serve?

Serves Portsmouth and 11 towns within 25 miles: Rye, Stratham Station, Newmarket, Durham, Hampton, Dover, Exeter, Seabrook, Somersworth, Kingston and Barrington. The list is based on the business's location and the usual service radius for general contracting. Confirm your address is covered when you call.

What do Google reviews say about River Birch Builders?

River Birch Builders has a rating of 5.0 from 26 Google reviews. The CR Score adjusts the star rating for review count, so a high rating from a few reviews counts for less than the same rating from many.

How do I contact River Birch Builders?

Call River Birch Builders on (603) 418-8644. The business is at 1039 Islington St STE 11, Portsmouth, NH 03801. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.

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