Co-op vs. Condo Renovations: How to Navigate Your NYC Board

The contractor is booked. The architect stamped the plans. The start date is circled on the calendar. And nothing moves, because your board packet has been sitting on the managing agent's desk for three weeks and no one will file your DOB permit until it's signed.

This is where NYC apartment renovations really die. Not the demo. Not the tile order. The paperwork with your own building. And whether you own a co-op or a condo changes almost all of it, so start there.

Co-op vs. Condo Board Approval: Who Controls Your Renovation

Buy into a co-op and you don't own real estate. You own shares in a corporation and hold a proprietary lease on your unit. That single fact is why the board runs the show: it can approve your renovation, rewrite it, or kill it, and it doesn't owe you much of a reason. Every serious project passes through an alteration agreement, the contract that spells out what you're allowed to do and exactly how.

Condo owners breathe easier. You hold a deed, so the board reviews your plans instead of blessing or blocking them at will. You'll still sign an alteration agreement and live by the house rules on work hours, insurance, and protection. Clear up one common mix-up while you're at it: a condo's right of first refusal covers a sale of the unit, not your renovation. It has nothing to do with getting work approved.

Here is how the two stack up on the things that hit your budget and your schedule.

Treat those as typical ranges. Your building's actual terms live in its alteration agreement and house rules, and no two buildings read the same.

The Alteration Agreement, Line by Line

The alteration agreement governs the entire job. Read it before you sign. Then read it again with your contractor in the room. It usually covers:

• Scope of permitted work and anything expressly banned (moving gas lines, combining units, touching the building's risers).
• Work hours and noise rules, plus which days are off-limits.
• Insurance and COI requirements for you and every trade.
• Protection of common areas: elevator pads, hallway coverings, and how debris leaves the building.
• Deposits, fees, and penalties for overruns or damage.
• Sign-off and deposit-return conditions once the job is done.

One clause trips up first-timers more than any other: the wet-over-dry rule. Most buildings won't let you put a wet area (a kitchen or bathroom) over a dry area (a bedroom or living room) in the unit below. The point is to keep your downstairs neighbor from waking up to a leak. Co-op boards almost never grant exceptions. Some condos will, if you commit to engineered waterproofing. So if your dream layout slides a bathroom across the floor plan, settle this before the architect draws a single line.

The Board Package: What Goes In It

The board package is your application, and a thin one gets bounced. Assemble:

1. Signed alteration agreement.
2. Architect- or engineer-stamped plans (required for anything structural, plumbing, gas, or electrical).
3. Contractor's license and a certificate of insurance (COI).
4. Scope of work and, often, a construction schedule.
5. The application fee and the refundable security deposit.

Touch plumbing, gas, electrical, or the structure of a wall, and most buildings require a licensed architect or engineer, because those are the same filings the DOB demands anyway. Cosmetic work is different. Paint, flooring, a cabinet swap in place, often skips the architect and sometimes the full board review, though the managing agent may still want a heads-up before the drop cloths go down.

Insurance and the COI

The certificate of insurance is where good jobs die on a technicality. Your contractor typically carries $1M to $2M in general liability plus workers' comp and disability, and the COI has to name the co-op or condo, the managing agent, and sometimes individual board members as additional insured, spelled out with the exact legal names the building uses. One wrong entity name and the whole packet comes back. Get the building's COI sample early and hand it to your contractor's insurer word for word.

Deposits and fees

The refundable security deposit ($5,000 to $20,000) sits in escrow against damage to lobbies, elevators, and hallways, and comes back 30 to 60 days after final sign-off. The non-refundable fees are separate money: an administrative processing charge plus the building architect's plan-review fee, together running $1,000 to $5,000. Condos usually land at the low end, or waive part of it.

The Jan 2026 DOB Attestation, and How It Fits

The change everyone's talking about: as of January 26, 2026, co-op and condo boards must attest inside DOB NOW that they reviewed and approved a unit owner's plans before the Department of Buildings will even accept the alteration filing. It covers ALT-1, ALT-2, and ALT-3 filings in co-op and condo buildings, as Fox Rothschild explains.

Board approval and DOB permitting used to run on separate tracks. Now they're bolted together. No board attestation, no permit. That tacks 2 to 4 weeks onto pre-construction and turns a slow board from a background annoyance into a hard stop. Attorneys at Herrick called it one of the year's most consequential shifts for boards.

What it means for you: get your board package in 8 to 12 weeks before your target start date. Want the mechanics of the permit itself? See our guide to the NYC DOB.

A Realistic Timeline

Design and plans: 2 to 4 weeks. Co-op board review: 4 to 8 weeks, condos 2 to 4. The DOB attestation: another 2 to 4. Then the permit itself can eat several more. Stack it all and a co-op renovation runs 3 to 5 months of pure paperwork before a single wall comes down. Condos shave a few weeks off the front.

The single biggest time-saver is running the tracks in parallel. Order long-lead materials the moment your design is locked, not after the permit clears, and open the board package the day your plans get stamped. CC Archie on your board and contractor emails and he holds the packet checklist, the COI status, and the attestation step so none of it quietly slips.

FAQ: NYC Co-op & Condo Board Approval

Your Next Steps

Board approval feels adversarial the first time around. It isn't, really. It's a process with a known shape, and the owners who breeze through are the ones who took the paperwork as seriously as the demolition.

1. Confirm whether you're in a co-op or condo, and get the alteration agreement and house rules up front.
2. Check the wet-over-dry rule before your architect finalizes any layout change.
3. Have your architect stamp plans, then assemble the full board package.
4. Get the building's COI sample and hand it to your contractor's insurer exactly as written.
5. Submit 8 to 12 weeks out, and confirm the board completes its DOB attestation before you expect a permit.