The following costs are intended as ballpark estimates for repairs and/or improvements to a typical single-family home. Actual contractor quotations can vary by as much as 300%. The quality of workmanship and materials will influence costs. The job’s complexity, accessibility, and even economic conditions can alter actual costs. These prices were compiled in 2018, so current prices will be higher.
The repair costs noted here are a courtesy only. The prices here are older and not representative of current, accurate costs. No liability will be accepted. I recommend you consult a minimum of three qualified contractors to evaluate and estimate repairs before initiating any work on your home.
Roofing / Flashings / Chimneys
| Install conventional asphalt shingles over existing shingles | $2.00 - $4.00 per sq.ft. |
| Strip and reshingle with conventional asphalt shingles | $2.75- $5.50 per sq.ft. |
| Strip and reshingle with premium quality asphalt shingles | $5.00 - $10.00 per sq .ft. |
| Strip and re-roof with cedar shingles | $9.00 - $18.00 per sq .ft. |
| Strip and replace built-up tar and gravel roof | $10.00 - $20.00 per sq.ft. (min. $1000) |
| Strip and replace single-ply membrane | $10.00 - $20.00 per sq.ft. (min. $1000) |
| Reflash typical skylight or chimney | $500.00 - $1000.00 |
| Rebuild typical chimney above roof line | $25.00 - $50.00 per row of bricks (min. $400) |
| Rebuild typical single flue chimney above roof line | $200.00 - $400.00 per lin.ft. (min. $1000) |
Exterior
| Install galvanized or aluminum gutters and downspouts | $5.00 - $10.00 per lin.ft. (min. $500) |
| Install aluminum soffits and fascia | $8.00 - $16.00 per lin.ft. |
| Install aluminum or vinyl siding | $6.00 - $12.00 per sq.ft. |
| Repoint exterior wall (soft mortar) | $3.00 - 6.00 per sq.ft. (min. $500) |
| Repoint exterior wall (hard mortar) | $5.00 - $10.00 per sq.ft. (min. $500) |
| Parge foundation walls | $3.00 - $6.00 per sq.ft. |
| Dampproof foundation walls and install weeping tile | $150.00 - $300.00 per lin.ft. (min. $3000) |
| Install a deck | $25.00 - $50.00 per sq.ft. (min. $1000) |
| Resurface existing asphalt driveway | $2.00 - $4.00 per sq.ft. |
| Install interlocking brick driveway | $8.00 - $16.00 per sq.ft. |
| Rebuild exterior basement stairwell | $5000.00 and up |
| Build detached garage | $70.00 - $140.00 per sq.ft. |
| Build retaining wall (wood) | $20.00 - $40.00 per sq.ft. (min. $500) |
| Build retaining wall (concrete) | $30.00 - $60.00 per sq.ft. (min $500) |
| Painting (trim only) | $2000.00 - $4000.00 and up |
| Painting (trim and wall surfaces) | $5000.00 and up |
Structure
| Underpin one corner of house | $5000.00 and up |
| Underpin or add foundations | $300.00 and up per lin. ft. (min. $3000) |
| Lower basement floor by underpinning and/or bench footings | $150.00 - $300.00 per lin .ft. (min. $5000) |
| Replace deteriorating sill beam with concrete | $60.00 and up per lin. ft. (min. $2000) |
| Install basement support post with proper foundation | $800.00 - $1600.00 |
| Perform chemical treatment for termites | $2000.00 and up |
| Repair minor crack in poured concrete foundation | $400.00 - $800.00 |
Electrical
| Upgrade electrical service to 100 amps (including new panel) | $1200.00 - $3000.00 |
| Upgrade electrical service to 100 amps (if a suitably sized panel already exists) | $800.00 - $1600.00 |
| Upgrade electrical service to 200 amps | $1700.00 - $3500.00 |
| Install new circuit breaker panel | $700.00 - $1400.00 |
| Replace circuit breaker (20 amp or less) | $100.00 - $200.00 |
| Add 120 volt circuit (microwave, freezer, etc.) | $150.00 - $300.00 |
| Add 240 volt circuit (dryer, stove, etc.) | $300.00 - $600.00 |
| Add conventional receptacle | $200.00 - $400.00 |
| Replace conventional receptacle with ground fault circuit receptacle | $70.00 -$140.00 |
| Replace a conventional receptacle with an aluminum-compatible type (CO/ALR)(assuming several are required) | $60.00 - $120.00 ea. |
| Upgrade the entire house with aluminum compatible receptacles, connectors, etc. | $1000.00 - $2000.00 |
| Rewire the electrical outlet with reversed polarity (assuming the electrician is already there) | $5.00 - $10.00 ea. |
| Replace knob & tube wiring with conventional wiring (per room) | $1000.00 - $2000.00 |
Heating
| Install mid-efficiency forced-air furnace | $2500.00 - $5000.00 |
| Install high-efficiency forced-air furnace | $3500.00 - $7000.00 |
| Install humidifier | $300.00 - $600.00 |
| Install electronic air filter | $800.00 - $1600.00 |
| Install mid-efficiency boiler | $3500.00 - $7000.00 |
| Install high-efficiency boiler | $6000.00 - $12000.00 |
| Install circulating pump | $400.00 - $600.00 |
| Install chimney liner for gas appliance | $500.00 - $1000.00 |
| Install chimney liner for oil appliance | $700.00 - $1800.00 |
| Install programmable thermostat | $200.00 - $400.00 |
| Replace indoor oil tank | $1200.00 - $2500.00 |
| Remove oil tank from basement | $600.00 and up |
| Remove abandoned underground oil tank | $10000.00 and up |
| Replace radiator valve | $300.00 - $600.00 |
| Add electric baseboard heater | $250.00 - $500.00 |
| Convert from hot water heating to forced-air (bungalow) | $10000.00 - $20000.00 |
| Convert from hot water heating to forced-air (two story) | $15000.00 - $30000.00 |
| Clean ductwork | $300.00 - $600.00 |
Cooling / Heat Pumps
| Add central air conditioning on the existing forced-air system | $3000.00 and up |
| Add heat pump to forced-air system | $4000.00 - $8000.00 |
| Replace heat pump or air conditioning condenser | $1200.00 - $2500.00 |
| Install independent air conditioning system | $10000.00 - $20000.00 |
| Install ductless air conditioning system | $3000.00 - $7000.00 |
Insulation
| Insulate an open attic to modern standards | $0.80 - $1.60 per sq. ft. |
| Blow insulation into a flat roof, cathedral ceiling, or wall cavity | $2.00 - $4.00 per sq. ft. |
| Improve attic ventilation | $30.00 - $60.00 per vent |
Plumbing
| Replace galvanized piping with copper (2 storey with one bathroom) | $2500.00 - $5000.00 |
| Replace water line to house | $2000.00 and up |
| Replace toilet | $500.00 and up |
| Replace basin, including faucets | $750.00 and up |
| Replace bathtub, including ceramic tile and faucets | $2500.00 and up |
| Install whirlpool bath, including faucets | $3500.00 and up |
| Retile bathtub enclosure | $1000.00 - $2000.00 |
| Replace leaking shower stall pan | $1000.00 - $2000.00 |
| Rebuild tile shower stall | $2500.00 - $5000.00 |
| Replace laundry tubs | $400.00 - $800.00 |
| Remodel four-piece bathroom completely | $6000.00 - $50000.00 |
| Connect waste plumbing system to municipal sewers | $5000.00 and up |
| Install submersible pump | $1000.00 and up |
| Install suction or jet pump | $700.00 and up |
| Install modest basement bathroom | $6000.00 and up |
Interior
| Add drywall over plaster | $4.00 - $8.00 per sq.ft. |
| Sand and refinish hardwood floors | $2.00 - $4.00 per sq.ft. |
| Install replacement windows | $40.00 - $120.00 per sq.ft. |
| Install storm window | $200.00 - $400.00 |
| Install masonry fireplace (if flue already roughed-in) | $3000.00 and up |
| Install zero-clearance firelace (including chimney) | $3500.00 and up |
| Install glass doors on fireplace | $300.00 and up |
| Install skylight | $3,000.00 |
| Remodel kitchen completely | $10,000.00 - $110000.00 |
| Install gas fireplace | $3500.00 and up |
