Estimates from your own tracing on satellite imagery. Setbacks, sizes, and placement are preliminary and must be verified by a design professional and your jurisdiction before you rely on them. Details
Start typing your address — we detect your city and its ADU rules automatically.
Jurisdiction
Auto-detect from address Longmont Louisville Lafayette Superior Broomfield Erie Frederick Boulder Berthoud We have cited ADU rules for these cities; any Colorado address still gets a preliminary read via state law.
1 · Trace on the photo
Click to add corners, double-click to finish. Drag corners to adjust.
2 · Add a structure
New ADU Home addition
Studio 360 sf 1-Bedroom 450 sf 2-Bedroom 750 sf
Pick a plan to drop an ADU of that size, then drag and rotate it into place. The size stays fixed to the plan.
Clear all More options Mark the street side
Click your street-facing lot edge This sets front vs side vs rear and draws the buildable keep-out lines — trace the house too for the front rule.
Re-check my zoning
Measurements
Lot area —
House footprint —
ADU size —
Closest property line —
Distance to house — Setback checks
Trace your lot and place an ADU to see setback checks.
Budget estimate
Studio 1-Bedroom 2-Bedroom
Good Great Premium
Pick a plan to see a budgetary range.
Add-ons Vertical siding upgrade $1,500–2,000 Custom color package $500–800 Heated bathroom floor $1,500–2,500 Heated floors throughout $6,000–10,000 Under-cabinet LED lighting $200–400 Landscape lighting system $1,200–2,500 Smart home integration $1,500–3,000 Murphy bed provision $2,500–5,000 Built-in desk / workspace $1,200–2,500 Window seat with storage $1,500–3,000 Electric fireplace $1,200–2,500 Exterior grill station $800–2,000 Ski / gear storage with heated entry $2,500–5,000 Exterior fire pit $1,500–4,000 Additional window * $800–1,500 * placeholder price — not yet on our plans page
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