Renovating in Biddeford, ME
Biddeford runs below the Greater Portland average and is one of the most active renovation markets in southern Maine, driven by mill-district conversions and buyers priced out of Portland. Crews travel from both Portland and the Saco–Sanford corridor.
Typical Biddeford project costs
| Project | Low | Likely | High |
|---|---|---|---|
| Kitchen remodel150 sq ft, mid-range finish | $45k | $62k | $82k |
| Bathroom remodel60 sq ft, mid-range finish | $23k | $31k | $43k |
| Roof replacement1,600 sq ft, mid-range finish | $74k | $124k | $198k |
| Home addition400 sq ft, mid-range finish | $121k | $165k | $220k |
| Basement finishing600 sq ft, mid-range finish | $36k | $56k | $82k |
| Whole-home renovation1,600 sq ft, mid-range finish | $229k | $317k | $440k |
| Deck building300 sq ft, mid-range finish | $15k | $25k | $40k |
| Siding replacement1,800 sq ft, mid-range finish | $74k | $124k | $198k |
| Garage addition480 sq ft, mid-range finish | $145k | $198k | $264k |
| Sunroom addition200 sq ft, mid-range finish | $60k | $82k | $110k |
Maine regional index with a 0.98× Biddeford 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.
Housing stock and what it means for cost
Dense 1800s mill housing and multi-families downtown and in the Ward 5 area, plus beach cottages at Biddeford Pool and Fortunes Rocks that were never built for year-round use. Converting a seasonal cottage is a full-envelope project — insulation, heat, plumbing freeze protection — not a cosmetic one.
Neighborhoods: Downtown / Mill District, Biddeford Pool, Fortunes Rocks, Granite Street, Ward 5.
Permits and contract rules
Authority: City of Biddeford Code Enforcement Office
Building permit for additions, structural work, and decks; trades pull their own permits. Multi-family conversions trigger fire-code and egress review that routinely reshapes a floor plan. Shoreland and flood-zone rules apply at the Pool and along the Saco River.
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.
Season and scheduling
Exterior work runs April through November. Beach-area projects are easier to schedule outside July and August, when parking and access at the Pool and Fortunes Rocks get difficult.
Check a Biddeford quote