Corona home additions

Most of Corona sits on attached and semi-detached lots, often around 20 to 25 feet wide, which shapes every addition decision from the start. Lot coverage and rear-yard setback rules limit how far a rear extension can push back, while FAR caps the total floor area you can build across the whole house. We measure your lot, pull the existing building footprint, and model what FAR and setbacks actually leave you before we talk design, so you are not paying for drawings that cannot be approved.

For attached and semi-detached rows, a rear extension or a one to two foot bump-out is usually the most feasible move, since side-yard rules are already constrained by neighboring walls. Second-story additions are possible on lower-coverage lots and on detached and semi-detached homes where the existing structure can carry the load, but they trigger a closer look at height limits and the DOB Alt-1 path. Corona's strong interest in basement legalization and active two to three family work also means many additions pair with cellar and unit changes, which has to be coordinated as one filing.

The process here runs through DOB: a licensed architect or engineer prepares zoning analysis and plans, we file the Alt-1 or Alt-2 application, and work proceeds under permit with required inspections. We handle the structural framing, foundation or underpinning where a second story or dig-down requires it, and the finishes, and we keep the scope aligned with what the lot legally supports so the certificate of occupancy clears.