Cape Cod Insulation, Inc

Pull the permit history and the picture gets unusually clear: 1,700 permitted jobs, 167 of them in the last three years, and the descriptions are overwhelmingly the same work — Mass Save weatherization, air sealing, and cellulose and fiberglass insulation across Cape Cod and the South Shore. Cape Cod Insulation has been doing it from South Yarmouth for decades; BBB records the business as started and incorporated in 1981 with about 40 employees under president Hank Cassidy Jr., and its own site describes more than fifty years on the Cape, grown from a one-man operation. Its Massachusetts home improvement contractor registration is active. The reviews are few, but they line up. A July 2026 customer said the crew worked efficiently, cleaned up after themselves, and that the house felt more comfortable straight away, with the heating and cooling system no longer working as hard. A January 2026 homeowner had the attic insulated and old, damaged insulation pulled and replaced, describing the same immediate difference and a smooth run from the first estimate to the final walkthrough. In December 2022 a customer who went through the Mass Save program for air sealing and weatherization wrote that the crew showed up on time, were polite, and left no mess. Two accounts suggest they handle more than the simple retrofit. In November 2024, someone managing construction of their own addition and unfamiliar with the current insulation codes said the company walked them through it, fielded repeated phone calls, and kept every one of many scheduled starts and stops. In May 2025 a church building in Wareham had several thousand square feet of ceiling grid installed, and the reviewer called the workmanship good and the cost reasonable. That points at the range. Alongside insulation the company installs suspended ceilings, gutters and downspouts, and does home energy audits and REScheck analysis. A March 2023 reviewer called it the most reliable insulation and gutter company they had used. The caveat is the size of the written history rather than anything inside it: 13 Google ratings and 11 reviews on file, set against 1,700 permitted jobs, is a thin sample of a company this size. BBB shows an A+ with no complaints or government actions on the page, and the business is not BBB accredited. For a Mass Save weatherization job, an attic retrofit, or insulation on an addition where the code details matter, this is a long-established, properly registered outfit whose permit record matches what it says it does. Ask which rebate program applies to your job, and get the scope and the R-values in writing.