Frequently asked questions

Yes. Cairn Home Co. (operating under OSNH Home Services LLC) is a registered New Hampshire company and carries general-liability insurance on every job. Electrical and plumbing work is performed by NH state-licensed professionals.

The Windham, NH corridor — Windham, Salem, Londonderry, Pelham, Hampstead, Atkinson, Derry, Bedford, Amherst and more — plus the NH seacoast (Portsmouth, Rye, Exeter) and northern Massachusetts (Andover, North Andover, Newburyport) for higher-end projects.

Free estimates with 24-hour estimates · weekends included — we send someone out within 24 hours, weekends included. You can also get an instant ballpark online; a real person confirms a firm quote.

Yes — 24/7 emergency response for burst pipes, backed-up drains, no power, and no heat. Call our emergency line any time.

Smart home and AV, electrical, plumbing and drains, remodeling, irrigation and landscape, cabinetry and countertops, decks, handyman, move-in/move-out, and recurring home-care plans — for homes and businesses.

Clear pricing up front, and you can pay your invoice online securely by invoice number with Square. Larger projects collect a deposit to begin.

A monthly membership that bundles scheduled maintenance, priority scheduling, member pricing, and proactive monitoring so your home is watched over year-round. See our Care Plans page for the tiers.

Yes — our bid for remodels, cabinetry, closets, and decks includes a 3D rendering so you can see the result before we build.

Yes. After booking you get a confirmation and a tracking link, and any change orders are sent to you to approve before extra work happens.

Yes. We partner with licensed, insured trade pros across the corridor. Apply on our Subcontractors page to join the network.