Home Additions — Room Additions, Second Stories & ADUs

From a single room bump-out to a full second-story addition or detached ADU, our team manages the entire process: architecture, structural engineering, permitting, and construction. We match existing rooflines, siding, and trim so the addition reads as part of the original home.

What's included

  • Architectural design & 3D modeling
  • Structural engineering & foundations
  • Permits, zoning & variance support
  • Roof tie-ins & exterior matching
  • Mechanical, electrical & plumbing
  • Detached ADUs (granny flats)
  • Second-story additions
  • Garage conversions

How the project runs

  • Feasibility: Setbacks, lot coverage, and structural feasibility checked before design begins.
  • Design & Permit: Stamped drawings, energy calcs, and permit submission with the local jurisdiction.
  • Build: Foundation, framing, dry-in, MEP, finishes — sequenced to keep the existing home livable.
  • Final Walk: Final inspections, certificate of occupancy, and warranty handoff.

Frequently asked questions

  • How long does a home addition take? Design and permitting typically take 2–4 months; construction runs 4–9 months depending on size and complexity.
  • Can you match my existing siding and roof? Yes. We source matching materials wherever possible, and where unavailable, we propose a complementary detail that reads as intentional.
  • Do you build ADUs? Yes — both attached and detached accessory dwelling units, including full kitchens, bathrooms, and separate utility metering when required.

FlexToFit Construction — licensed & insured general contractor. Call +1 (716) 575-3539 or email info@flextofit.com.