Jane Riley Design

Designers in Lexington don't pull permits — the contractor does, through the Lexington Building Department. Kitchen and bath remodels trigger building, plumbing, and electrical permits, with gas line work needing a separate gas permit. Genuine antique colonials around the Battle Green and East Village frequently carry original knob-and-tube remnants, undersized service, and original plaster worth preserving; a designer planning a kitchen, primary bath, or whole-floor scope will routinely coordinate careful rewiring and service upgrade with the GC. Lexington's strict historic districts cover exterior changes only — interior design and finish work in district homes proceeds without preservation commission review.

Lexington interior designer fees sit at the top of the Massachusetts market — comparable to Newton and 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+. Flat-fee single-room scopes typically run $6,000 to $14,000. Kitchen-bath selection packages commonly land at $7,000 to $16,000. Whole-house engagements are usually priced at 15 to 25 percent of combined construction-and-furnishings budget; on a substantial antique-colonial restoration that figure runs well into six figures in design fees. 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 Lexington page.