Start with the site, not the floor plan
Setbacks, lot coverage, utility routing and access for construction equipment usually constrain the design more than your preferences do. Understanding the site first saves redesign later.
General range
Detached new-build ADUs in this region commonly run from roughly $250,000 to $500,000 or more, while garage conversions typically start lower.
Timeline realities
Design, review and permitting often take longer than construction. Build that into your expectations from the beginning.
Cost ranges on this site are general informational estimates only. They are not quotes, guarantees, or the current pricing of any contractor. Actual pricing depends on your property, scope and the professional you hire.
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