Transform Your Home With a Custom ADU Addition

A wrench is sitting inside of a gear.

Rely on our local company based in the Milford and Lyndeborough, NH area

Maybe you want to create another stream of income with rental space. Maybe your in-laws are planning to move in. Either way, you should consider building an accessory dwelling unit (ADU) addition on your property in the Nashua, Milford or Lyndeborough, NH area. Reach out to the skilled ADU builders at R. LaBonte Construction & Development to help you get started.


An ADU is a secondary housing unit on a single-family residential lot. While ADUs are significantly smaller than the average home, they’re fully functional with modern HVAC, plumbing and electrical systems. Our team can build both attached and detached ADU additions to serve your specific needs.

Your possibilities are endless

ADUs are an excellent way to maximize the potential of your property. We specialize in offering tailored ADU solutions that are designed to meet your unique needs. You can hire us to build a: 




  • Detached ADU: A standalone one-bedroom, one-bath unit in your backyard, complete with its own entrance, kitchen and bathroom.
  • Garage conversion: Turn your existing garage into a cozy, fully functional ADU, including a bedroom, bathroom and kitchenette.
  • Second-floor addition: Add a second floor to your garage or home, creating an independent one-bedroom living space.
  • Studio ADU: A small, self-contained studio ideal for use as a rental or guest suite, featuring a bathroom, kitchenette and living area.
  • Guest house ADU: Build or convert a space to offer your guests privacy, with one bedroom, one bath and kitchen facilities.


To share your plans with our experienced ADU builders, please reach out to us today.

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