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Dining area of Alpha's Gramercy Park apartment renovation

Co-op & Condo Renovation Contractors in Manhattan

Manhattan co-op and condo renovations built around board packages, alteration agreements, and pre-war realities.

Alpha Contracting Services handles Manhattan co-op and condo renovations — Upper West Side, Upper East Side, Tribeca, SoHo, Chelsea, Murray Hill, West Village, and beyond. Pre-war plaster, original details, alteration agreements, and strict building rules all shape the planning.

Pre-war co-op and post-war condo workAlteration agreement and board package coordinationOriginal-detail preservation with modernized layout

Our Approach

Manhattan co-op and condo work is won or lost in pre-construction.

Manhattan co-op and condo work is some of the most disciplined renovation construction in the country. The combination of pre-war buildings, alteration agreement packages, board approvals, insurance documentation, expediter requirements, and tight work-hour windows means the project succeeds or fails in pre-construction.

We handle the contractor-side of the alteration agreement, coordinate with architects and expediters when the scope calls for filed plans, and bring the construction discipline pre-war and post-war Manhattan buildings demand.

Manhattan Co-op & Condo Focus

Pre-war co-op and post-war condo workAlteration agreement and board package coordinationOriginal-detail preservation with modernized layout

Our Process

A five-step Manhattan co-op and condo renovation process.

Manhattan co-op and condo renovations need a pre-construction phase that respects the building, the board, and the alteration agreement timeline.

Step 1

Consultation and Building Fit Review

We review the apartment or unit, the renovation goals, and the building conditions so the scope can be framed realistically.

Step 2

Board Package and Scheduling Coordination

Contractor-side paperwork, scheduling assumptions, material timing, and building rules are reviewed before the construction phase is finalized.

Step 3

Protection and Controlled Demolition

The unit and shared areas are protected carefully, and demolition is planned in a way that respects the building constraints.

Step 4

Renovation and Finish Work

Trade work and finish installation move in sequence so the construction stays organized and building conditions are respected.

Step 5

Walkthrough and Close-Out

We review the completed work together, address final punch items, and close out the renovation with clear communication.

Client Feedback

What People Are Saying

Manhattan co-op clients usually remember whether the contractor handled the building as much as how the finished apartment looks.

Dave and Manny went above and beyond to help us renovate our bathroom. They even visited showrooms and sourced tile samples when our schedule got tight. The room came out great and we have already started planning another project with them.

Jeffrey R.

Park Slope, NY

Guidance, sourcing help, and clean execution.

We want to thank Manny, Dave, and their team for their professionalism and advice from the beginning of the project to the end. They worked within our budget, made strong recommendations, and delivered a finished project that added beautiful curb appeal to our home.

Bob and Adrienne

Westbury, NY

Professional communication and budget-minded planning.

Co-op & Condo Renovation Manhattan FAQs

Manhattan co-op and condo renovation answers.

Questions that come up most often when planning a co-op or condo renovation in a Manhattan pre-war or post-war building.

Yes. Pre-war co-op work on the UWS and UES is one of our core scopes — original plaster walls, herringbone or strip oak floors, original moldings, alteration agreements, and the strict work-hour limits these buildings tend to enforce.

Next Step

Planning a Manhattan co-op or condo renovation?

Tell us about the building, the unit, the scope, and the timeline, and we'll come back with the right plan for the board package, the construction path, and the finish work.