KRC Interior Design

Designers in Cohasset don't pull permits — the contractor does, through the Cohasset Building Department. A kitchen or bath remodel typically triggers building, plumbing, and electrical permits, with a separate gas permit for gas line work. The pre-1900 stock around the Common can carry knob-and-tube remnants, undersized service, and original plaster, requiring update before a full-floor scope. Harborfront and coastal properties along Jerusalem Road and the harbor frequently add Conservation Commission review, and may involve flood-zone construction requirements, when work affects setbacks from coastal banks or wetlands. Cohasset's local historic districts cover exterior changes only — interiors proceed without commission review.

Cohasset interior designer fees sit in the top tier — comparable to Hingham and the higher reaches of Wellesley, typically 30 to 45 percent above the state median. Hourly rates from established firms commonly run $200 to $450, with principal designers at top boutiques charging $500 to $750 or more. Flat-fee single-room scopes typically run $6,000 to $14,000, and kitchen-bath selection packages land around $7,000 to $16,000. Whole-house engagements are usually priced at 15 to 25 percent of the combined construction-and-furnishings budget; on a harborfront or Common-area restoration that runs well into six figures. Cost-plus procurement markups run 20 to 35 percent over trade.

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

More on permits, costs, rebates and common questions, plus every other interior design contractor serving the town, on the Interior Design in Cohasset page.