OnTime Insulation Services Inc.

Insulation in Holliston, MA · ★ 5.0 Google rating

Google rating as of October 2026. How ratings work here

Address
48 Morton St, Holliston, MA 01746

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About OnTime Insulation Services Inc.

OnTime Insulation Services Inc. is a Insulation contractor based in Holliston, Middlesex County, Massachusetts, at 48 Morton St, Holliston, MA 01746. It has a Google rating of 5.0 out of 5. Its website is linked above. A listing here is not a license or insurance check, so verify both directly before hiring.

Service area

Based in Holliston, OnTime Insulation Services Inc. is within a short drive of Medway (3 mi), Milford (4 mi), Ashland (4 mi), Hopkinton (4 mi), Millis (5 mi) and Sherborn (5 mi). Most Massachusetts insulation contractors work a 25-mile radius, so homeowners in those towns can reasonably ask for a quote.

Hiring a Insulation contractor in Holliston

Insulation in Holliston usually needs no standalone building permit, but the contractor should carry a Massachusetts Home Improvement Contractor (HIC) registration, with a Construction Supervisor License (CSL) for related structural work. Mass Save jobs must run through a participating, approved contractor. Spray foam has to meet the state fire and ignition-barrier code. Work on antique homes in or near a local historic district can require additional review for exterior changes, though interior dense-pack and attic work generally does not.

MetroWest pricing in Holliston sits a bit below central Boston but above the western part of the state. As of recent cycles, attic insulation typically runs $1,500 to $4,000, dense-pack wall insulation $2,000 to $6,000, and air sealing roughly $300 to $1,500, with spray foam higher per square foot. Antique homes with plaster-and-lath add drilling and patching cost. Because Holliston is a Mass Save town, the 75 to 100 percent incentive can bring net out-of-pocket close to zero once the assessment approves the scope.

Massachusetts requires a written contract and a Home Improvement Contractor registration for most residential insulation work; ask for the registration number and check it before paying a deposit.

More on permits, costs, rebates and common questions, plus every other insulation contractor serving the town, on the Insulation in Holliston page.

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