
Long Island Home Remodeling and Construction Services
Choose Gappsi to Design and Build Your Home Remodeling Project Today!
Samples of Our Home Remodeling Designs and Construction Work
Let Gappsi Create Your Backyard Entertainment Space!
Gappsi designs and builds home remodeling projects for homeowners throughout Nassau and Suffolk Counties. From kitchen and bathroom renovations to basement finishing, room additions, dormers, tile installation, windows, siding, and new construction, our team helps coordinate the design and construction details in one project plan. We can also coordinate architectural and engineering drawings and permit expediting through our associates when your project requires them.
Call Gappsi at (631) 831-3177 to discuss your Long Island home remodeling project.
What home remodeling services does Gappsi provide?
Gappsi provides design and construction support for interior remodeling and related home improvement projects across Long Island.
Kitchen and bathroom remodeling
Update kitchens and bathrooms with coordinated layout planning, cabinetry and fixture decisions, tile installation, flooring, backsplashes, shower surrounds, and finish materials selected for the space.
Basement remodeling and finishing
Turn an underused basement into a more functional part of the home with planning for finished rooms, flooring, tile, storage, entertainment areas, and other improvements suited to the existing structure.
Additions, extensions, dormers, and new construction
Gappsi can help plan larger changes such as room extensions, dormers, and new construction, including coordination of architectural and engineering drawings and permit-related support through associates when needed.
Tile, flooring, windows, and siding
Choose interior tile and natural stone materials at the Smithtown showroom, then coordinate installation and related finish work for kitchens, bathrooms, floors, walls, windows, and siding.
Electrical and plumbing coordination
For projects that require electrical or plumbing work, Gappsi works with electricians and plumbers as part of the broader remodeling plan.
How does Gappsi guide a remodeling project?
- Discuss the project: Review the home, the rooms involved, the desired improvements, and the practical constraints.
- Plan the design: Define the layout, materials, finishes, and supporting drawings needed for the project.
- Coordinate the work: Organize construction details and related trades, including plumbing and electrical coordination when required.
- Complete the installation: Build and finish the approved remodeling scope with attention to the selected materials and details.
Why work with Gappsi on Long Island?
Gappsi has served Long Island homeowners since 1987 and combines design guidance, construction experience, and a Smithtown showroom where clients can review materials in person. That combination can simplify decisions for homeowners who want one team to help coordinate a remodeling project from planning through installation.
Gappsi serves homeowners in Nassau and Suffolk Counties, including communities across the North Shore, South Shore, Western Long Island, and Eastern Long Island.
Call Gappsi at (631) 831-3177 to discuss your remodeling plans and next steps.
Home Remodeling Project Gallery
See examples of Gappsi home remodeling work in the Home Remodeling Designs and Construction Gallery. Learn about the companyâs background on the Gappsi history page. Review porcelain and natural stone materials for interior and exterior applications, and explore masonry design and construction for related property improvements.
All Products & Installation Services Gappsi Offers
Gappsi offers home remodeling services in the following areas Eastern Long Island, Western Long, Island, North-Shore Long Island, South-Shore Long Island, Suffolk County, Nassau County, Glen Cove, Hempstead, North Hempstead, Oyster Bay, Babylon, Huntington, Islip, Smithtown, Brookhaven, Southampton, Riverhead, East Hampton, Southold, Old Brookville, Old Westbury, Mill Neck, Nissequogue, Lloyd Harbor, Muttontown, Coldspring Harbor, East Norwich, and both Nassau and Suffolk County. In addition, Gappsi provides all the following products and services: Landscape Designing, Swimming pools, Home Remodeling, Sports Game Courts, Outdoor Appliances, Pavingstone Cleaning and Sealing, Holiday Lights, Epoxy Floors, Shrink Wrap Services, Landscape, Masonry, Natural Stone, Granite, Marble, Travertine, Limestone, Porcelain.
Frequently Asked Questions About Home Remodeling on Long Island
Gappsi’s home remodeling division handles interior renovation projects, including kitchen remodeling, bathroom renovations, basement finishing, room additions, flooring installation, tile work, and full interior build-outs. As a full-service construction company with roots dating back to 1987, Gappsi brings decades of craftsmanship to interior and outdoor construction projects throughout Nassau and Suffolk County.
Yes. Gappsi carries an extensive selection of interior tile at their Smithtown showroom, including porcelain, ceramic, and natural stone tiles for kitchen backsplashes, bathroom floors and walls, shower surrounds, and more. By sourcing materials directly and displaying them in their showroom, Gappsi allows clients to see and select tile in person before any work begins, eliminating guesswork and ensuring satisfaction with the final result.
Yes. Gappsi manages the permitting process for interior and exterior renovation projects across Nassau County, Suffolk County, Southampton, and the five NYC boroughs. Gappsi holds contractor licenses in all these jurisdictions and is experienced with local building department requirements, inspection scheduling, and zoning regulations that apply to home improvement projects on Long Island.
Yes. Gappsi is one of the few companies on Long Island that can take a whole-property approach, designing and building interior renovations alongside outdoor living spaces, including pools, patios, pavilions, and landscaping. This means a single point of contact for your entire project, cohesive design decisions, and simpler project management for the homeowner.
Yes. Gappsi installs epoxy floor systems for garages, basements, and commercial spaces. Epoxy floors offer a durable, seamless, easy-to-clean surface that is significantly more resistant to stains, chemicals, and abrasion than bare concrete. Gappsi also installs epoxy resin and pebble decorative surfaces for outdoor areas.


















