603 Birch Realty is a boutique residential real-estate brokerage based at 44 Nashua Road, Unit 7, in Londonderry, New Hampshire. The company says it serves buyers and sellers across the Granite State, with a focus on homes, condos, land, multi-family properties, new construction, single-family homes, and waterfront property. Its team includes Adam Gaudet, identified on the company site as Broker/Founder, alongside several agents. The company also explicitly describes itself as LGBTQ+-owned.
People who hired the firm describe hands-on help through complicated purchases and sales. Reviews mention first-time buyers, relocations into New Hampshire, selling and buying at the same time, land searches, new construction, and transactions handled across long distances. Clients repeatedly praise clear communication, responsiveness, patience, market guidance, negotiation, and practical help through closing. A 2023 review described Trevor helping sell a long-held home after an initial deal fell through, then securing multiple above-asking offers within days and managing the closing while the sellers were out of state.
There is also a contrary account to discuss before booking: a September 2025 one-star reviewer described a disappointing experience beginning with a model-property visit involving Trevor and Adam. The available excerpt does not establish whether that complaint concerned a standard brokerage transaction or a specific development, so prospective clients should ask about the relevant property, representation, fees, and communication expectations before signing. The public review history otherwise includes five-star accounts from 2021 through 2026, including five reviews in the last six months.
603 Birch Realty appears suited to New Hampshire buyers and sellers seeking an agent-led residential transaction, especially first-time buyers, relocations, multi-property moves, land or new-construction searches, and clients who value frequent communication. Confirm which agent will handle the work, the scope of representation, and the details of any development or builder-related transaction up front.
