Even when zoning allows an ADU, nothing gets built without Department of Buildings approval. Under City of Yes, ADUs may be permitted As of Right in many cases, but they still must pass plan review, code compliance and inspection through DOB.

This process is where most delays happen.

Step One: Zoning and Feasibility Review

Before filing, homeowners should confirm:

• Zoning district eligibility

• Lot size and coverage limits

• Building type and use classification

Zoning permission is only the starting point.

Step Two: DOB Filing and Plan Review

Plans are submitted by a licensed professional. DOB reviewers examine:

• Egress compliance

• Fire separation and ratings

• Structural load capacity

• Plumbing and electrical systems

• Energy code compliance

Any issues trigger objections that must be corrected before approval.

Step Three: Permits and Inspections

Once plans are approved, permits are issued. Inspections occur throughout construction. Final sign off requires all work to match approved plans exactly.

Why ADU Approvals Stall

• Incomplete drawings

• Egress violations

• Fire separation deficiencies

• Utility capacity issues

• Conflicts between zoning and building code

DOB approval is procedural, not political. The plans either comply or they do not.

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Joseph Ranola | Five-Star Staten Island & South Brooklyn Realtor® (30 + Google reviews)
Associate Broker · Matias Real Estate | Founder · Bridge & Boro Team
Serving 103xx and 11209 / 11214 / 11228 | $25 M + closed volume
📞 917-716-1496 | ranolarealestate.com