Detached ADU near Flemington, NJ

Haven ADUs is a Brooklyn-based design and project management firm specializing in accessory dwelling units (ADUs). They guide property owners through feasibility, design, permitting, and construction, serving as a single point of contact throughout.

Second Key NYC is a licensed general contractor specializing in ADU construction across Staten Island, Queens, Brooklyn & the Bronx. Services include design, permitting & builds from $300–$350/sqft, completed in 3–6 months.

GTG Custom Home Builders specializes in ADU construction in Central New Jersey. They build detached ADUs, garage conversions & in-law suites, navigating local zoning & permits to expand your property's living space.

Adé Real Estate is an ADU contractor serving Jersey City, Newark & New York. They offer zoning checks, permit-ready designs, turn-key builds & financing guidance. ADUs can generate $2,000–$3,500+/month rental income & add $150K–$250K+ in property value.

Liamar is a New Jersey contractor building custom garages, ADUs, and accessory structures in Monmouth, Mercer, Ocean, and Burlington counties. Services include permits, foundations, electrical, plumbing, and HVAC — fully code-compliant.

Lotus Restore & Remodel offers ADU design and construction in Montgomery County, PA. Services include garage conversions, basement renovations, in-law suites & backyard cottages. Licensed, family-owned, with 25+ years experience.