ADU / accessory dwelling in Lewisville
Lewisville is Lewisville's 1970s-1990s ranch + traditional + 2000s+ infill on the western shore of lake lewisville submarket. Lewisville sits on the western shore of Lake Lewisville (a US Army Corps of Engineers reservoir at elevation 522) -- shoreline parcels face a 200-foot USACE setback that supersedes any city setback rule.
What a adu / accessory dwelling project looks like here
Lewisville sits on the western shore of Lake Lewisville (a US Army Corps of Engineers reservoir at elevation 522) -- shoreline parcels face a 200-foot USACE setback that supersedes any city setback rule.
Because the lake was created in 1955 with a controlled flood-pool elevation of 532, parcels in the 522-532 elevation band sit in the 100-year floodplain -- FEMA AE-zone elevation certificates are mandatory on any addition.
The 1970s-1990s ranch stock here used aluminum branch wiring during a longer period than other DFW suburbs (1972-1980 typical) -- electrical-permit upgrade triggers are more common here than in same-era Plano or Irving stock.
Dallas R-5(A) / R-7.5(A) / R-10(A) residential zones allow ADUs by-right since the 2022 code update — Dallas Building Inspection Division files the permit on a residential template. In Lewisville specifically, 1970s-1990s ranch + traditional + 2000s+ infill on the western shore of lake lewisville stock means adu / accessory dwelling scope is shaped by the neighborhood's dominant construction typology. Baily's Dallas scoping flow factors lewisville is a separate municipality with separate building department and lewisville adopted 2021 irc + iecc into the estimate before a contractor is involved.
Start your Lewisville scope — Baily asks the right questions.
Pre-seeded for adu / accessory dwelling in Lewisville. Mention your 1,800-3,500 sqft, your timeline, and any known constraints — Baily factors the city of lewisville building inspection review queue into the scope.
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Who is Baily?
Baily is named after Francis Baily — an English stockbroker who retired at 51, became an astronomer, and in 1836 described something on the edge of a solar eclipse that nobody had properly articulated before: a string of bright beads of sunlight breaking through the valleys along the moon’s rim.
He wasn’t the first to see them. Edmond Halley saw them in 1715 and barely noticed. Baily’s contribution was clarity — describing exactly what was happening, in plain language, so vividly that the whole field of astronomy paid attention. The phenomenon is still called Baily’s beads.
That’s what we wanted our AI to do. Every inbound call and text has signal in it — a homeowner’s real question, a timeline, a budget, a hesitation that means “yes but.” Baily listens to every one, 24/7, and finds the beads of light.
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Questions LA homeowners actually ask
Lewisville adu / accessory dwelling projects typically run $85K–$285K. Lewisville's 1970s-1990s ranch + traditional + 2000s+ infill on the western shore of lake lewisville stock, combined with lewisville is a separate municipality with separate building department, puts most mid-complexity projects in the $185K range. Baily scopes the exact band once you describe the work.
Nearest neighborhoods
Same service, adjacent Dallas submarkets.