Home Improvements Costs

Home Improvement Costs

The following costs are intended as ballpark estimates for repairs and/or improvements to a typical three bedroom home. Our experience has shown that actual contractor quotations can vary by as much as 300%. Naturally, the quality of workmanship and materials will influence costs. The complexity of the job, accessibility and even economic conditions can also alter actual costs.

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 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 conventional receptacle with aluminum compatible type (CO/ALR)(assuming several are required) $60.00 - $120.00 ea.

Upgrade entire house with aluminum compatible receptacles, connectors, etc. $1000.00 - $2000.00

Rewire electrical outlet with reversed polarity

(assuming electrician 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 storey) $15000.00 - $30000.00

Clean ductwork $300.00 - $600.00

Cooling / Heat Pumps

Add central air conditioning on 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 open attic to modern standards $0.80 - $1.60 per sq.ft.

Blow insulation into 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 $3000.00

Remodel kitchen completely $10,000.00 - $110000.00

Install gas fireplace $3500.00 and up

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