Yarmouth prices above the Greater Portland average. Scopes here skew toward careful renovation of older homes and higher-finish work, and the contractors who specialize in that stock book well ahead.
| Project | Low | Likely | High |
|---|---|---|---|
| Kitchen remodel150 sq ft, mid-range finish | $49k | $66k | $88k |
| Bathroom remodel60 sq ft, mid-range finish | $25k | $34k | $46k |
| Roof replacement1,600 sq ft, mid-range finish | $80k | $133k | $212k |
| Home addition400 sq ft, mid-range finish | $130k | $177k | $236k |
| Basement finishing600 sq ft, mid-range finish | $39k | $60k | $88k |
| Whole-home renovation1,600 sq ft, mid-range finish | $245k | $339k | $471k |
| Deck building300 sq ft, mid-range finish | $16k | $27k | $42k |
| Siding replacement1,800 sq ft, mid-range finish | $80k | $133k | $212k |
| Garage addition480 sq ft, mid-range finish | $156k | $212k | $283k |
| Sunroom addition200 sq ft, mid-range finish | $65k | $88k | $118k |
Maine regional index with a 1.05× Yarmouth metro factor, 10% contingency included. Budgeting estimates, not quotes.
Estimated range — based on BLS OEWS national average wages and BLS PPI material indexes applied to Our Haus baseline unit costs, as of June 2026. Estimates are shown as a range and help set expectations. They are not a quote, a verified price, or an appraisal of what a contractor will charge.
Federal and Victorian homes along Main Street and East Elm, mill-era housing near the Royal River falls, mid-century neighborhoods inland, and waterfront homes toward Cousins Island and Prince's Point. The historic stock carries plaster, original windows, and lead paint; the waterfront carries shoreland and septic limits.
Neighborhoods: Main Street Historic District, Royal River, Cousins Island, Prince's Point, East Elm.
Authority: Town of Yarmouth Code Enforcement Office
Building permit plus zoning review. Shoreland zoning applies along the Royal River and Casco Bay frontage, and island properties add real logistics cost for materials and crew time. Historic-district exterior work carries additional review.
Maine requires a written contract for home-construction or repair work over $3,000. The contract must include the contractor's name and address, the work and materials, the total price, a payment schedule, start and completion dates, a warranty statement, and notice of the state's contractor-dispute mediation program. Maine does not license general contractors, so verify insurance directly with the carrier.
Exterior work runs April through October, earlier on the water where fall weather closes the window. Interior renovation runs year-round and is easier to book for a winter start.
Check a Yarmouth quote