An interior renovation starts with a written scope and a clear sequence: demolition and rough-in first, then drywall, bathroom and kitchen, and finally floors and paint. In New York City, hire a contractor only after checking the DCWP license, a signed written contract and, in pre-1978 buildings, EPA Lead-Safe certification.
A full apartment or house renovation is rarely a single decision. It is a chain of choices where every link affects the next one: the layout determines the plumbing and wiring, the systems determine the schedule, and the schedule determines when you finally get your home back. Pick the tile before anyone has seen what is behind the walls, and you can easily end up paying for the same work twice. A good plan starts with scope and sequence, and only then moves on to colors and cabinet fronts.
New York adds a layer of paperwork that many homeowners do not expect. The city requires a license for contractors who do home improvement work in residential buildings, many projects need a permit from the Department of Buildings, and older walk-ups in Queens and Brooklyn come with their own traps, lead paint among them. This guide walks you through the whole process: the list of work, the factors that push the estimate up, and the questions to ask every contractor before you sign anything.
What does a full interior renovation include, and in what order?
A gut renovation means stripping the interior down to the structure. Old partition walls, finishes, floors and often the systems come out, and the space is rebuilt from scratch. A lighter refresh keeps the layout and replaces only the finishes. Decide which of the two you are planning before you ask for estimates, because everything else depends on it.
A typical full renovation covers several groups of work. Most often that means the kitchen and bathroom, basement finishing, new walls and ceilings in drywall (including fire-rated and acoustic board), painting, hardwood, tile or vinyl flooring, and custom built-ins. If you change the layout, structural work comes in as well, for example around load-bearing walls. That kind of change needs drawings and approval from the city, so it cannot simply be added halfway through.
The basement deserves its own conversation. Before you plan a home office, a gym or a guest room down there, check how it handles moisture and how you get in and out of it. Ask your contractor whether the intended use requires a permit, since the rules treat living space differently from storage or a laundry room. Choose flooring and lighting only after that.
Sequence matters because every stage covers up the one before it. A proven order looks roughly like this:
- demolition and an assessment of the structure and systems that are now exposed,
- structural work and layout changes,
- plumbing and electrical rough-in before anything is closed up,
- drywall, taping and priming,
- bathroom and kitchen: tile, fixtures, cabinets and countertops,
- floors, paint, doors and trim, followed by the punch list.
Sound familiar? Most people want to start with the fun part, because that is what they will see every day. Yet the hidden work is what decides whether you will be tearing open a brand-new bathroom two years from now because of a leak.
What drives the cost of an interior renovation?
There is no meaningful per-square-foot price for a full renovation in New York. The estimate is built from several factors, and each one can move the budget more than you would think. The first is scope: refreshing the finishes is a different category from a gut job with a new layout. The second is what turns up behind the walls, and nobody knows that for certain before demolition.
Materials carry a lot of weight. Solid hardwood, large-format tile or acoustic drywall cost more and take more labor than simpler alternatives. Design counts too: moving a kitchen or bathroom means new supply and drain lines, often an architect’s drawings, and permits. Every layout change adds hours for several trades, not just one crew.
The third area is logistics, and it is easy to overlook. In a multifamily building you deal with permitted work hours, elevator access, debris removal and protection of common areas. Then there is the schedule: the more changes you make along the way, the longer the job takes and the more it costs. A solid estimate breaks all of this into line items so you can see exactly what you are paying for.
Want to talk through your scope before you start collecting bids? Call for a free consultation in Polish or English: 718-456-3150
Renovating in New York, New Jersey and Connecticut: licenses, permits and lead
In New York City, anyone doing home improvement work in residential buildings needs a Home Improvement Contractor license from the city’s Department of Consumer and Worker Protection (DCWP). You can confirm a license by calling 311 or through the DCWP website. The agency also advises a written contract signed by both sides that lists dates, the work, the materials and a payment schedule. Pay no more than 25% up front and never in cash, according to the DCWP tips for hiring a home improvement contractor.
Many home improvements also require a permit from the Department of Buildings. Under DCWP guidance, your contractor should tell you in writing which permits are needed before you sign, and make sure the right party obtains them. If you live in New Jersey or Connecticut, check your state’s requirements for home improvement contractors, since each state sets its own rules. In a co-op or condo, ask the building manager which documents they need before work can begin.
Lead is a separate issue. Plenty of buildings in Greenpoint, Ridgewood or Astoria went up long before 1978, and paint in homes of that age may contain lead. The EPA requires firms paid to disturb painted surfaces in pre-1978 homes to be certified, and their workers to be trained in lead-safe work practices. You will find the details on the EPA Renovation, Repair and Painting Program page.
An interior renovation often brings new outlets, lighting or custom built-ins along with it. If that sounds like your project, read our guide to electrical upgrades and interior carpentry.
What to look for when choosing a renovation contractor
With a full renovation you are not just hiring a crew – you are choosing a partner for several months. This person will hold the keys to your home, set the order of work and deal with your building manager. Price matters, but it is not what decides whether the project runs smoothly.
That’s where things get tricky, because bids often look alike on paper. Use the checklist below to compare them fairly.
- A detailed written estimate. Ask for an estimate broken down by stage and material instead of one lump sum. Many contractors offer a free consultation and estimate, so use it to ask about each step.
- EPA Lead-Safe certification. If your building predates 1978, ask whether the firm is certified under the EPA program. It shows the crew knows how to contain dust and clean up safely.
- Reviews from similar projects. Check whether the company has completed full apartment renovations, not just small repairs. BBB accreditation and Google reviews show how a contractor treats clients, including when something goes wrong.
- Project management from start to finish. Ask who handles permits and coordinates the trades. A contractor who runs the job from the first plan to the final walkthrough saves you from juggling several crews.
- Communication with everyone involved. During a renovation you talk to an architect, the building manager and the crew. A team that speaks your language and is used to working with architects makes it easier to settle details that tend to get lost in translation.
PDP Contracting in Ridgewood meets these criteria — see the company profile and client reviews.
Common renovation mistakes and when to start
The most expensive mistake is changing things mid-project without putting it in writing. Moving an outlet or switching the tub sounds minor, but every change means new material, more time and sometimes redoing another trade’s work. DCWP publishes a model change order form, so both sides know exactly what was added and at what price.
The second common mistake is comparing bids by the bottom line alone. A cheaper bid may simply leave out demolition, debris removal or permits, which then show up later as extras. Line the bids up item by item and ask about every difference.
The third is buying materials before measurements are taken after demolition. Walls in old buildings are rarely straight, and tile or cabinets ordered by eye may not fit. It is better to wait a few days and order everything to the actual dimensions.
So when should you start? Interior work can go on all year, so winter does not have to mean downtime. Many people plan renovations for spring, which is why it pays to gather bids and handle the paperwork a few months ahead. Permits, drawings and building approvals take time, and a well-prepared plan lets work begin without nervous waiting.
A full interior renovation is a project where you gain the most at the planning stage. A written scope, a clear sequence and an understanding of what drives the estimate let you talk to contractors in specifics instead of generalities. A written contract, notice of permits, signed change orders and, in an older building, EPA certification protect you from surprises nobody wants halfway through a renovation.
If you are planning to renovate an apartment or house in New York, New Jersey or Connecticut, talk to a contractor who works in all three states and serves both residential and commercial clients. The consultation and estimate at PDP Contracting are free, and the contractor’s website shows examples of completed projects.
Book a free estimate: 718-456-3150
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