Home Addition
Westchester NY
Built to Last.
You love your neighborhood, your school district, and your community. You just need more space. J&J Remodeling builds home additions throughout Westchester County that expand your home without uprooting your life.
Westchester Additions
More Space Without
Leaving the Home
You Already Love
Moving in Westchester County is expensive, disruptive, and no guarantee of landing in a better situation. Between transfer taxes, broker fees, closing costs, and the reality of the current real estate market, many homeowners are finding that building a well-designed addition is a smarter financial decision than buying a new home just to get the square footage they need.
A home addition solves a specific problem without creating new ones. You stay in the school district your kids are settled into. You keep the neighborhood where you know your neighbors. You hold onto the mortgage rate you have. And you get exactly the space you need, designed around how your family actually lives rather than working around someone else’s layout.
J&J Remodeling has been building home additions throughout Westchester County for over 15 years. We have worked on colonials in Scarsdale, cape cods in Larchmont, split levels in Yonkers, and ranches in Pelham. We understand the housing stock in this county, we know the permitting process in every Westchester municipality, and we build additions that genuinely look and feel like they were always part of the original home. That last part is harder than it sounds, and it is where the experience shows.
“The best home addition is one where visitors cannot tell where the original house ends and the addition begins. That is the standard we hold every project to.”
Every Kind of Home
Addition in Westchester
From a single bedroom to a full second story, we build every type of home addition in Westchester County. One team handles everything from foundation to finished interior.
Get a Free EstimateBedroom Addition
A new master suite, a dedicated guest room, or an extra bedroom for a growing family. We build bedroom additions that feel like they have always been part of your Westchester home, with proper closet space, natural light, and the right proportions for your existing layout.
Bathroom Addition
Adding a full bathroom, a half bath, or an ensuite to a Westchester home changes daily life significantly. We handle all plumbing, tile, fixtures, and finishes so your new bathroom is fully functional and properly waterproofed from day one.
Kitchen Expansion
Many Westchester homes have kitchens that were built for a different era of cooking and family life. A kitchen bump-out or expansion removes the constraints of the original footprint and gives you the open-plan layout that modern households actually need.
Second Story Addition
When your Westchester lot does not allow for a ground-level expansion, going up is the answer. A second story addition can double your home’s square footage without touching your yard. It is a major undertaking and one that requires a contractor with genuine structural expertise.
In-Law Suite
Multi-generational living is increasingly common in Westchester. A thoughtfully designed in-law suite gives a family member their own private space with a separate entrance, a full bathroom, a kitchenette, and the independence that makes shared living work for everyone.
Family Room Addition
A dedicated family room addition creates the gathering space your household is missing. Connected to the rest of your Westchester home but purposeful on its own, a family room addition is one of the most used and appreciated additions we build.
Six Steps From
Idea to Move-In Ready
A home addition is a significant project. We walk every client through a clear, organized process so there are no surprises at any stage from the first conversation to the final inspection.
Free Consultation
We visit your Westchester home, listen to your goals, assess your property, and discuss what is structurally possible on your lot.
Design and Planning
We work with you on the layout and scope of your addition, producing a plan that meets your goals and your budget before anything is finalized.
Permitting
We handle all permit applications with your local Westchester building department and manage all required drawings and inspections throughout.
Foundation and Framing
The structural work begins. Foundation, framing, roofing, and exterior envelope built to code with materials that match your existing home.
Mechanical and Finishes
Plumbing, electrical, HVAC, insulation, drywall, flooring, trim, and every interior finish completed by our skilled team.
Final Inspection
We complete all required municipal inspections, walk through every detail with you, and hand over your finished addition ready to use.
Home Additions Done
the Right Way
A home addition is one of the most technically complex projects a contractor can take on. It involves structural engineering, foundation work, roofing, exterior envelope, all mechanical systems, and a complete interior buildout. It also has to blend with an existing home that was built years or decades earlier, matching rooflines, siding, window styles, and interior finishes so the seam is invisible.
This is not a project for a general handyman or a contractor who primarily does kitchens and bathrooms. It requires a team with genuine construction depth, a thorough permit process, and a project manager who understands how all the trades need to sequence together to keep the timeline on track.
J&J Remodeling brings all of that to every addition we build in Westchester. We manage every trade, handle every inspection, and stay accountable to a written timeline and budget from start to finish.
Important Things to Know Before Starting
Home Addition Costs in Westchester NY
All ranges are estimates based on current Westchester market conditions. Final cost depends on your specific property, scope, finishes, and permit requirements. J&J Remodeling provides a free, detailed written estimate for every project.
How much does a home addition cost in Westchester NY?
Home addition costs in Westchester NY typically run $150 to $350 per square foot depending on the type of addition and the finish level. A straightforward room addition of 400 square feet runs $60,000 to $140,000. A second story addition over an existing footprint can range from $150,000 to $400,000 or more. The biggest cost variables are the complexity of tying into your existing structure, the finish level of the interior, and the specific requirements of your Westchester municipality’s building code. J&J Remodeling provides a free detailed written estimate so you have accurate numbers before making any decisions.
Do I need a permit for a home addition in Westchester County?
Yes, without exception. All home additions in Westchester County require permits from your local municipality’s building department. This covers the structural work, plumbing, electrical, and mechanical systems. Each Westchester town runs its own building department with its own requirements and review timelines. Scarsdale, White Plains, Yonkers, New Rochelle, and every other municipality has a slightly different process. J&J Remodeling manages all permit applications, required architectural drawings, and inspection scheduling on your behalf. You never have to interact with the building department yourself.
How long does a home addition take in Westchester?
A home addition in Westchester has two distinct phases: permitting and construction. Permitting typically takes 4 to 12 weeks depending on your municipality and the complexity of the project. Once permits are approved, a room addition typically takes 10 to 16 weeks to build. A second story addition or large in-law suite can take 5 to 8 months of construction time. We provide every client with a realistic timeline at the start of the project and keep you informed throughout. The permitting phase is the variable we cannot fully control, which is why we recommend starting the process as early as possible.
Will a home addition add value to my Westchester home?
Yes. In the Westchester real estate market, additional square footage, extra bedrooms, and added bathrooms have a direct and measurable impact on home value. Homeowners in Westchester County typically recover 60 to 80 percent of their addition cost in added appraised value, and in high-demand areas like Scarsdale, Bronxville, and Larchmont, that return can be even stronger. A well-built addition that blends seamlessly with the existing home and is permitted and inspected properly is treated by appraisers and buyers as legitimate square footage, which is why quality construction matters so much.
Can I live in my home during the addition construction?
In most cases, yes. The majority of home additions in Westchester are built onto the exterior of the home and do not require opening up the interior until the addition is weathertight. That means your daily life inside your home is largely uninterrupted during the foundation, framing, and exterior phases of construction. The interior connection is typically made toward the end of the project after the new space is complete. We discuss this in detail during your consultation so you know exactly what to expect and when the most disruptive phases will occur.
Is J&J Remodeling licensed for home additions in Westchester NY?
Yes. J&J Remodeling is fully licensed and insured in New York State and authorized to build home additions throughout Westchester County. Every addition project is backed by our general liability insurance and workers compensation coverage. We provide proof of licensing and insurance before starting any project. Home additions in Westchester require a licensed contractor by law, and we strongly encourage every homeowner to verify licensing and insurance with any contractor they consider for a project of this scope.
Westchester Homeowners
Trust J&J Remodeling
Real reviews from homeowners across Westchester County who trusted J&J with their renovation and addition projects.
“J&J completely transformed our home. From the initial consultation to the final reveal, they were professional, clean, and communicative every single step of the way. The quality of craftsmanship is exceptional.”
“We hired J&J for a full renovation and couldn’t be more pleased. They finished on time, stayed within budget, and the craftsmanship is absolutely top-notch. We will hire them again without hesitation.”
“The work they did for us is absolutely beautiful. Our neighbors keep stopping by to ask who did the work. Honest pricing, skilled team, and they treated our home with total respect throughout the entire project.”
Home Additions Across
All of Westchester County
We build home additions throughout Westchester County and serve homeowners in New York City and southwestern Connecticut as well.
Ready to Add Space to Your Home?
Call us or submit your project details online. We serve all of Westchester County and will get back to you within one business day to schedule your free in-home consultation.
(914) 291-3772 Homejandj@gmail.com Request a Free Estimate