Upper East Side Co-Op & Condo Renovation Contractors

Renovating your condo and co-op on the Upper East Side The Gallery Way means working with a dedicated team that specializes in both property types. We navigate the complicated nuances of renovating NYC condos and co-ops on your behalf, plus know best practices for expediting board approval. We are committed to craftsmanship and impart each project with our built-in architectural and interior design services. With Gallery, customer satisfaction and breathtaking work are the bottom line.

New York City Co-Op & Condo Renovation

Award-Winning Co-Op & Condo Renovations In NYC

Co-op and condo renovations on the Upper East Side carry their own specific complexities. Co-op alteration agreements are among the strictest in Manhattan, board approval timelines run 60 to 120 days, and pre-war buildings along Fifth and Park bring infrastructure realities that require careful coordination with building engineers. As a full-service design-build firm working exclusively in Manhattan and Brooklyn, we handle every part of that process under one contract, whether the project is a Carnegie Hill pre-war co-op, a Lenox Hill condo combination, a Yorkville post-war update, or a full gut renovation along the Fifth Avenue corridor. Read our client reviews to see how that approach plays out in practice.

About Gallery KBNY

Gallery KBNY is an award-winning, full-service design-build firm specializing in the architecture, interior design, and renovation of apartments, co-ops, condominiums, townhomes, and lofts across Manhattan and Brooklyn. Our integrated team of architects, designers, contractors, and project managers — with a founding partner involved in every project — manages every phase from board approvals and DOB permitting through design and construction. Because architecture, design, permitting, and construction are coordinated under one roof, the process remains streamlined, accountable, and transparent from start to finish. Our work has been recognized by Forbes, The New York Times, Architectural Digest, and Inc., and we have received Houzz Best of Design & Service seven consecutive years, along with 100+ five-star client reviews.

Co-Op vs Condo

How A UES Co-Op Renovation Differs From A UES Condo Renovation

Owners often use "co-op" and "condo" interchangeably, but from a renovation standpoint the two are very different. Co-op buildings have an additional layer of approval and oversight that condos do not, and that single difference shapes timeline, scope, and cost more than almost any other variable. Below is each type broken out across the same seven dimensions for easy comparison.

Type 01

UES Co-Op Renovation

Ownership Structure

Owner holds shares in a corporation that owns the building, plus a proprietary lease for the apartment. The corporation, governed by the board, controls every alteration.

Required Approval Document

Alteration Agreement, signed before any work begins. Outlines scope, materials, work hours, contractor insurance requirements, and deposit terms.

Board Approval Timeline

60 to 120 days for alteration agreement review and board approval. Pre-war buildings on Fifth and Park Avenues run on the longer end of this range.

Engineer Review Scope

Building's reviewing engineer reviews architectural plans, MEP changes, and any work affecting the building's mechanical systems. Detailed back-and-forth is common.

Renovation Restrictions

Strict rules on plumbing relocations (wet-over-dry), allowed materials (often no hardwood in certain rooms), work hours (typically 9 to 4 weekdays), and noise.

Alteration Deposit Requirements

Refundable deposits between $10,000 and $50,000+ are common, held until final building sign-off. Some pre-war Fifth Avenue addresses require deposits well above this range.

Typical UES Examples

Pre-war co-ops along Fifth Avenue and Park Avenue, classic-six layouts in Carnegie Hill, Beaux-Arts buildings facing Central Park, and the strictest alteration regimes in Manhattan.

Type 02

UES Condo Renovation

Ownership Structure

Owner holds title to the apartment as real property, plus a percentage of the common elements. The condo association governs common areas but has lighter oversight of unit interiors.

Required Approval Document

Modification Agreement or House Rules acknowledgement. Generally lighter than a co-op alteration agreement, focused on protecting common areas during the renovation.

Board Approval Timeline

30 to 60 days for modification agreement and any required filings. Newer condos on Yorkville's eastern edge can sometimes move faster.

Engineer Review Scope

Building engineer review focuses on common-element impact and MEP integration. Less granular than co-op engineer reviews in most cases.

Renovation Restrictions

Wet-over-dry rules generally apply but are enforced less rigidly. Work-hour restrictions are similar but often more flexible. Material restrictions are lighter.

Alteration Deposit Requirements

Deposits when required are typically smaller and more standardized. Many UES condos require only a flat administrative fee rather than a refundable deposit.

Typical UES Examples

Post-war condo buildings throughout Yorkville, modern luxury towers along York and First Avenues, and converted condo addresses in Lenox Hill and the East 60s and 70s.

Benefits Of Renovating Your UES Condo Or Co-Op With Gallery

Co-op and condo renovations succeed or fail on coordination. Architecture, interior design, alteration agreement compliance, board submissions, DOB filings, and construction all have to move in sync, and the gaps between them are where projects break down. Our design-build model puts every part of that work under one roof and one contract, with a single project manager accountable from initial walkthrough through final building sign-off..

More Streamlined Than Traditional General Contractors

The default search for "Upper East Side general contractor" returns mostly traditional design-bid-build firms, where the homeowner ends up coordinating between a separate architect, designer, and general contractor with no contractual obligation to each other. That coordination role is far more demanding than most owners anticipate, particularly when navigating co-op alteration agreements where the building engineer scrutinizes every MEP change. Our design-build process consolidates every part of the project under one contract, eliminating handoff gaps and giving the homeowner a single point of accountability. For a deeper comparison, read Design-Build Vs General Contractor: What's The Difference?

NYC Co-Op & Condo Renovation


More Control And Lower Cost Than Independent Architects

The other common path is hiring an independent architect first, then bidding the construction out separately. This route gives the architect significant control over the design but typically delays the cost picture: full construction estimates only arrive after the architectural design phase, which can run four to six months. By that point, design decisions are locked in, and clients often discover the full scope of costs only after they've already invested heavily in plans. Our integrated approach delivers architecture, design, and construction estimating in parallel, so the budget picture is clear from the start. For a deeper look, read What Kind Of Architect Is Best For Your NYC Apartment Renovation?

Design-Build, The Ideal Approach To Your Condo Renovation On The Upper East Side

Design-build is the model that aligns most closely with how Upper East Side homeowners actually want to renovate: one accountable team, one contract, transparent pricing from the architectural phase forward, and a single point of contact through every approval and inspection. Benefits of design-build include:

Streamlined Communication

Five separate relationships become one. The homeowner has a single project manager who tracks design, board approvals, alteration agreement compliance, DOB filings, and construction, instead of coordinating between four or five outside parties themselves.

Welcomed Design Input

The architecture and interior design develop in parallel within the same firm, working from the same brief. Clients can be as involved as they want, from full mood boards to deferring to the design team's lead, with the design and construction teams aligned from day one.

Faster Project Completion

Not only are there less middle-men for clients to deal with in design-build renovations, all needed components being under one roof means every party is working in tandem towards the same goal from day one. This leads to proactive solutions earlier in the process, faster permitting and approvals, quicker response times between parties in pivotal points of the renovation, and ultimately a shorter delivery time for clients. After all, in Manhattan, there’s no time to waste.

Proactive Risk Management

The design-build umbrella of services not only expedites the move-in date, but having all needed services working in tandem early on in the process results in proactive problem solving and less change orders mid-way through the renovation. Without having these preliminary checks and balances in-house, details may fall through the cracks and issues common in older buildings may rear their ugly heads (IE: insufficient electrical capacity, hidden asbestos, outdated cloth wiring, etc).

Early Knowledge Of Costs

With all resources accounted for upfront, providing all-inclusive pricing for your full renovation is one of the most convenient benefits of design-build. This is especially beneficial considering most other methods of renovating provide staggered pricing, which can quickly become difficult to manage as the project proceeds.

Exclusive To New York City

While certain competitors aim to service various areas across the country, Gallery’s goal has always been to deliver the highest quality condo and co-op renovations in New York City. We don’t create stock kitchen templates and sell them via big box stores, or cater half our business around part of the country with a totally different climate. We deliver full-service, start-to-finish condo renovations, specifically for New Yorkers, built specifically around the specialized complexities our magnificent city has to offer. After all, why would we go anywhere else?

All Elements Of Your UES Condo & Co-Op Renovation Under One Roof

As a turnkey, full-service design-build firm, we are all-inclusive in our services. From start to finish, we do everything, including: architectural services, interior design, material selection and procurement, construction and site management, and all the NYC renovation nuances most of our clients never consider, such as permits, inspections, building board approvals, and if necessary, landmark applications. 

We Don’t Work On A Change Order Model

We work exclusively in Manhattan and Brooklyn and understand how to navigate the complications required to renovate in a city with such rich history. Our proactive planning and due diligence allows us to provide a comprehensive budget and timeline that takes into account all nuances within your desired scope ahead of time to prevent any unforeseen changes down the line. Our proposals encompass the true full cost of the entire renovation from start to finish.

We Value Communication

From real-time project updates via our JobTracker app to ad hoc phone calls and site visits, we put extra emphasis on our communication with clients. Our projects have many moving parts, and clear communication is of the utmost importance to keeping your renovation on track.

The UES Co-Op & Condo Renovation Process: What to Expect

Every Upper East Side co-op and condo renovation moves through the same phases, but the specifics shift dramatically based on building type. A pre-war Fifth Avenue co-op alteration agreement is a different document than a Yorkville post-war condo's. A landmarked Carnegie Hill address adds LPC review on top of standard DOB filings. Below is the end-to-end process we follow on every UES project, with the points where building type changes the timeline called out specifically. For a comparison of the design-build approach versus the more traditional design-bid-build model, read Design-Build Vs Design-Bid-Build: What's The Difference?

PLANNING & PREP | Architectural Drawing And DOB Filings

Most condo renovations require architectural plans to be approved by the building board along with the NYC Dept of Buildings. We take on all architectural planning and filings with our award winning in-house design team and architects. Learn more about our architecture services.

PLANNING & PREP | Alteration Agreement

Co-op renovations on the Upper East Side are fairly regulated. Co-op boards have alteration agreements which impose rules around what is and isn’t allowed in terms of construction and renovation, including methods that can and can’t be used.

The alteration agreement guides how we approach the project. This involves the following, among other things:


In order to push the formalities presented above, we strive to establish strong rapport with the super in every building we work in. We consistently earn the relationship, maintaining an open line of communication and collaboration to ensure as seamless of a working environment as possible. We will only do this in certain cases, we will petition your co-op board to make exceptions if we feel it’s a genuine and worthwhile possibility.

PLANNING & PREP | INSPECTIONS & TESTING

Since the average New York City apartment is around 90-years-old, there are often skeletons waiting to be uncovered when renovating. At Gallery, we prioritize all needed tests and inspections before any renovation can begin, in order to ensure no unwelcome surprises arise and delay our agreed-upon timeline. We handle all of the following on behalf of our clients:

  • Asbestos Test
  • Electrical Test
  • Plumbing Inspection

PLANNING & PREP | MATERIAL SELECTION + PROCUREMENT

The most hands-on aspect of any UES condo renovation or co-op remodel is finding materials to bring your chosen interior design style to life. That entails paint color, accent walls, flooring style, mouldings, fixtures, countertops, and more. As a full-service design-build firm we take on the design, sourcing, and procurement of every permanent fixture in your home.

Plus, Gallery is brand-agnostic and vendor-agnostic, meaning we’re not limited in any way with our material selections. Some firms or contractors sell their own materials or have relationships with particular vendors, but our commitment is to our clients. We’ll procure from any vendor, whether international or local. This quality makes our ability to design for both taste and budget fairly flexible.

Pre-war apartment renovation NYC

PLANNING & PREP | DESIGN RENDERS

After materials have been sourced, we create life-like digital renderings of the renovated apartment. This includes every aspect of the design, from flooring to fixtures, even showing how renovated rooms will look under different lighting settings. These high-end renderings provide a visual accompaniment to the blueprint that guides construction and helps clients tweak final design decisions like paint color or fixture height. The kitchen render to the right is from our Upper East Side Condo Renovation at The Gotham. See the completed kitchen directly below. Learn more about how our lifelike design renderings help clients visualize the interior design for their Upper East Side apartment renovation.

CONSTRUCTION & RENOVATION

Pre-war apartment renovation NYC

UES Approval Stack

Five Approval Layers Behind A UES Co-Op Or Condo Renovation

A UES co-op or condo renovation is not one approval, it's a stack of approvals running partly in sequence and partly in parallel. Each layer has its own document, its own reviewer, and its own typical duration. Below is the full picture, including which layers apply to all UES projects and which apply only to specific addresses.

Layer 01

Architectural Documentation Prep

applies to: all UES projects

In-house architectural team produces the construction documents, MEP coordination drawings, and finish schedules required by every other downstream reviewer. Nothing else can begin until this package exists.

What's Prepared

Floor plans, elevations, MEP drawings, finish schedules, structural details, demolition plans.

Typical Duration

8 to 12 weeks for standard scope, longer for combinations or pre-war restoration work.

If It Stalls

Every other layer waits. Most often delayed by late client design decisions on layout or scope.

Layer 02

Building Engineer Review

applies to: most UES co-ops and condos

The building's reviewing engineer (separate from the board) examines the drawings for structural feasibility, MEP impact on the building's systems, and compliance with the alteration agreement. Co-op engineer reviews are typically more granular than condo equivalents.

What's Submitted

Full architectural and MEP drawing set, scope-of-work narrative, contractor insurance certificates.

Typical Duration

3 to 6 weeks for first review, additional 2 to 4 weeks per round of revisions.

If It Stalls

Most often delayed by engineer comments requiring drawing revisions, particularly around riser stack relocations or wet-over-dry exceptions.

Layer 03

Co-Op or Condo Board Approval

applies to: all UES co-ops; some UES condos

Board reviews the alteration agreement (co-op) or modification agreement (condo) along with the engineer-approved drawings. Co-op boards on Fifth and Park typically meet monthly, so calendar timing matters as much as document quality.

What's Submitted

Signed alteration or modification agreement, engineer-approved drawings, contractor and architect credentials, refundable deposit (co-ops).

Typical Duration

60 to 120 days for UES pre-war co-ops, 30 to 60 days for most UES condos.

If It Stalls

Boards may request scope reductions, additional contractor references, or higher refundable deposits, particularly on Fifth and Park addresses.

Layer 04

NYC DOB Filings & Permits

applies to: all UES projects with structural / MEP / plumbing scope

NYC Department of Buildings filings cover structural changes, electrical, plumbing, and any work requiring a permit. Filings happen in parallel with board approval but can't be released until the building has signed off on the scope.

What's Submitted

PW-1 application, ALT-2 work permit filings, asbestos ACP-5/ACP-7, electrical and plumbing sub-permits.

Typical Duration

2 to 6 weeks for standard ALT-2 filings, longer for ALT-1 work involving structural changes.

If It Stalls

Most commonly stalled by objections requiring drawing revisions or by inspection scheduling at the front and back ends.

Layer 05 (When Applicable)

LPC Review

applies to: landmarked UES addresses only

The Landmarks Preservation Commission reviews any work affecting protected exterior elements on landmarked addresses. The Carnegie Hill, Metropolitan Museum, and Henderson Place Historic Districts cover significant portions of the UES, so this layer applies to a meaningful share of pre-war Fifth and Park projects.

What's Submitted

LPC application, photographs, drawings of any affected exterior elements, materials samples where required.

Typical Duration

60 to 90 days for staff-level approvals, longer for full Commission hearings on substantial scope.

If It Stalls

Most commonly stalled by material substitution requirements (matching original brick, window profiles, or storefront elements).

Additional UES Condo Renovation Services

Pre-war apartment renovation NYC

Pre-War Apartment Renovations

As experienced pre-war renovation contractors in New York City, Gallery KBNY helps our UES clients turn their pre-war homes into masterpieces. We also know how much work is needed before each unveiling. Thanks to scattered ownership and inevitable decay, pre-war properties often require significant planning and renovation before they can meet their full and pristine potential. View our full portfolio of pre-war apartment renovations in NYC.

Pre-war apartment renovation NYC

Combining Two Condos

With a sole focus on NYC properties, we’re quite well-versed in what it takes to combine apartments – everything from how to approach the new layout to accounting for building codes, wet over dry restrictions, and communicating with co-op boards. View our full portfolio of apartment combinations in NYC.

Pre-war apartment renovation NYC

Room Creation

By focusing on residential renovations in New York City, our expertise includes any unique room customization imaginable. Whether you’re in need of additional bedrooms, a room that can serve as an office or a study, or a smaller room that can store your washer and dryer, we are experts in building new rooms in existing apartments.

Pre-war apartment renovation NYC

Full Gut Renovations

Our specialty is full-scale gut renovations of the various styles of residential homes that make up New York City. While full details on this extensive overhaul of your home are noted in our guide on Gut Renovations In New York City 101, the average full gut renovation to an Upper East Side condo with Gallery KBNY includes:

  • Full Kitchen Renovation (Fixtures, Appliances, Countertops, Backsplash, Island)
  • Multiple Bathroom Renovation (Fixtures, Shower/Bath, Vanity, Tiling & Ceramics)
  • Hardwood Flooring and/or Carpet Installation
  • Pre-War Restoration (Flooring, Framing, Moulding)
  • Custom Window Treatments + Fabrication/Installation
  • Paint Color + Wall Covering
  • Lighting + Electrical Fixture
  • Custom Carpentry (Cabinets, Closet Builds, Millwork, Finish Carpentry)
  • HVAC Update
  • Plumbing Selections

Client Testimonials & Reviews

We did an up/down apartment combo with Avi and his team and could not be happier. Their work was on time, on budget and very high quality. Having one firm handle everything was seamless and took so much of the stress surrounding logistics out of the process. We have done construction several times over the years and this was BY FAR the best experience we’ve had. Highly recommend. Our project manager, Miguel, was special. View The Project: https://www.gallerykbny.com/our-work/battery-park-townhouse-apartment-vertical-combination-328-albany-st

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We loved working with Avi and the whole team at Gallery Kitchen and Bath. From our very first meeting, we felt like we were in great hands. Avi is so responsive—always available, quick to come up with solutions, and he and his team helped us pivot whenever needed without losing momentum. Renovating in NYC is complicated, but they handled all the logistics seamlessly and made the process so much less stressful. They do everything—design, architectural work, and managing every detail and skilled trade needed for a full gut renovation of our loft apartment —so we never had to worry. They are in full control of their workers, which allows them to stay on track and adapt quickly. They were creative and helpful when we needed to pivot on design unexpectedly. We felt like we had true partners that genuinely cared about our project and our well being! The finished space truly exceeds our expectations—we are so proud of our beautiful new home. It’s hard to put into words how positive our experience was overall. We would not hesitate for a moment to recommend Avi and the entire team at Gallery. They will be our very first call if we ever need to renovate again in the future… and you should call right now if you’re considering a renovation! View The Renovation: https://www.gallerykbny.com/our-work/chelsea-co-op-renovation-107-w-25th-st

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Considering a Renovation in NYC?

Click to schedule a consultation with one of the principle partners at Gallery, who will hear out your renovation plans and let you know the best way to proceed - whether we end up working together or not.

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VIEW OUR COMPLETED NYC APARTMENT RENOVATIONS

Pre-war apartment renovation NYC

Manhattan Townhouse Renovation | 529 East 87th

Our clients occupied the first two floors of this Manhattan townhouse, converted to condos with coveted access to the outdoors via a patio. The overall space had been well-maintained, but was dated and didn't necessarily reflect the aesthetic of our clients. With renovations throughout the entire home and a focus on the kitchen, our goal was to brighten the home with character alongside modern elements. View the full Upper East Side townhouse renovation before and after.

Pre-war apartment renovation NYC

Full Renovation Of Pre-War Co-Op In Manhattan | 1035 5th Avenue

Our recent renovation at 1035 5th Avenue found us in the middle of quintessential Manhattan. Overlooking Central Park, this beautiful Italian Renaissance Palazzo co-op is located on Fifth and 85th street, just down the street from The Met. When our client purchased this 4,000 square foot pre-war property, the space hadn’t been updated in more than 50 years. The vision for this renovation called for a complete design overhaul of the extensive space, while incorporating many of the prior architectural elements and elegant marble accents, while also creating an additional bathroom and powder room. While the results speak for themselves, the client’s glowing praise for our full-service approach went a long way. View the full UES renovation before & after.

Manhattan Design-Build

Pre-Purchase Renovation Assessment

Evaluate Your Manhattan Apartment
Before You Buy

Gallery KBNY is an award-winning, full-service design-build firm specializing in the architecture, design, and renovation of apartments, co-ops, condos, townhomes, and lofts across Manhattan and Brooklyn. Our in-house team — with a founding partner involved in every project — manages every phase from board approvals through construction. No outsourcing, no handoffs, no gaps in accountability.

As seen in

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★★★★★ 100+ Five-Star Reviews Best of Design & Service · 7 Years Running

Pre-Purchase Assessment

We conduct pre-purchase renovation assessments for buyers during the contract period. Walk the apartment with us before you commit — understand the full scope, cost, and timeline before closing.

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