• Onega Inspection Services, LLC

Estimated Home Repair Costs

Onega Inspection Services, LLC is happy to provide this list of estimated home repair costs. The items listed below are defective items that may be found during a professional home inspection.

These estimates are "ballpark" figures which are generated from online resources. Naturally, location, quality of workmanship, and materials will influence costs. For a more exact price estimate, we recommend contacting a qualified professional in your area as individual circumstances vary greatly.


Repair minor crack in poured concrete foundation $400.00 – $800.00

Install basement support post with proper foundation $800.00 – $1,600.00


Install conventional asphalt shingles over existing shingles $2.00 – $4.00 per sq. ft.

Strip and reshingle with convention 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.


Rebuild typical chimney above roof line $150.00 – $300.00 per lin. ft. (min. $1,000.00)

Rebuild typical single flue chimney above roof line $200.00 – $400.00 per lin. ft. (min. $1,000.00)


Reflash typical skylight or chimney $500.00 – $1,000.000

Gutters and Downspouts

Install galvanized or aluminum gutters and downspouts $5.00 – $10.00 per lin. ft.


Upgrade electrical service to 200 amps $1,700.00 – $3,500.00

Replace circuit breaker (20 amp or less) $100.00 – $200.00

Replace conventional receptacle with ground fault circuit receptacle $70.00 – $140.00

Add conventional receptacle $200.00 – $400.00

Rewire electrical outlet with reversed polarity (assuming electrician already out there) $5.00 – $10.00 each

Replace knob & tube wiring with conventional wiring (per room) $1,000.00 – $2,000.00


Install aluminum or vinyl siding $6.00 – $12.00 per sq. ft.

Repoint exterior wall $5.00 – $10.00 per sq. ft.

Parge foundation walls $3.00 – $6.00 per sq. ft.

Install a deck $25.00 – $50.00 per sq. ft.

Resurface existing asphalt driveway $2.00 – $4.00 per sq. ft.


Install mid-efficiency boiler $3,500.00 – $7,000.00

Install high-efficiency boiler $6,000.00 – $12,000.00

Install mid-efficiency forced-air furnace $2,500.00 – $5,000.00

Install high-efficiency forced-air furnace $3,500.00 – $7,000.00

Install circulating pump $400.00 – $600.00

Replace indoor oil tank $1,200.00 – $2,500.00

Remove oil tank from basement $600.00 and up

Remove abandoned underground oil tank $10,000.00 and up

Clean ductwork $300.00 – $600.00

Cooling/Heat Pumps

Add central air conditioning on an existing forced-air system $3,000.00 and up

Add heat pump to forced-air system $4,000.00 – $8,000.00

Replace heat pump or air conditioning condenser $1,200.00 – $2,500.00

Install ductless mini-split air conditioning system $3,000.00 – $7,000.00


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


Replace galvanized piping with copper $2,500.00 – $5,000.00

Replace water line to house $2,00.00 and up

Replace toilet $500.00 and up

Retile bathtub enclosure $1,000.00 – $2,000.00

Replace leaking shower stall pan $1,000.00 – $2,000.00


Repair damaged drywall $300 – $800

Sand and refinish hardwood floors $2.00 – $4.00 per sq. ft

Replace windows $650 Per Window. Avg (Depending on window type and quality)

Wood Destroying Insects

Perform chemical treatment for termites $2,000.00 and up

Home Inspection Cost Vs Savings

The average cost of a home inspection $358

The average cost of a home inspection in RI $395-$455

The average cost of a home inspection in CT $455-$515

Recent analysis shows that a home inspection saves the average buyer around $14,000 on their home purchase.

Most home buyers have recognized the power of inspections. In fact, the same report showed that 8 in 10 recent homebuyers hired a home inspector.

These estimates are not meant to sway readers from purchasing a home that might need some work. Rather this is written to help potential home buyers understand the value of a home inspection while considering a new property.

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Onega Inspection Services, LLC is a full service home inspection company serving Rhode Island and Connecticut.

We are a local and family owned business located in Westerly, Rhode Island.



ASHI Certified Home Inspector ACI#257065

InterNACHI Certified Professional Inspector, NACHI #17030147

Rhode Island Licensed Home Inspector #44179

Connecticut Licensed Home Inspector #HOI.0001084

Licensed Pest Inspector #7650

ASHI Certified Home Inspector ACI#257065

Certified Radon Professional

NRPP ID#111457-RT


P.O. Box 431

Westerly, RI 02891

(401) 284-7455

Mon - Fri: 7AM - 7PM

Sat: 8AM - 5PM

Sun: 1PM - 5PM

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