About LotFoundry

LotFoundry is an ADU feasibility studio. Enter an address to explore estimated rent potential, build cost ranges, and payback for an accessory dwelling unit on a lot you already own — then connect with builders when you are ready.

Homeowners deciding whether their backyard can earn, and builders who want consented feasibility snapshots matched to their service areas.

Start with an address or sample lot. LotFoundry brings the first questions homeowners usually ask into one place: what may fit, what it could cost, what it could rent for, and how long the investment may take to pay back. The studio combines parcel context, configurable ADU dimensions, local-rule signals, and financial assumptions so you can compare a scenario before paying for detailed design work.

As you change the ADU size or assumptions, the feasibility and financial estimates update with the scenario. You can review lot coverage and setback signals, compare the projected rent and build-cost range, and save or share an early snapshot when you have a direction worth discussing with a designer, contractor, lender, or city planner.

Every rent, cost, and timeline figure is an estimate, not a guarantee and not professional engineering, legal, or financial advice. Local zoning, utilities, and permitting still need verification with your city and licensed professionals.

Questions? Visit Help, send feedback, or email support@lotfoundry.net.