Services
Home additions and extensions on Long Island

An addition is judged from the curb. If the siding does not line up, the trim is a different profile, or the new windows sit at a different height than the old ones, everyone can tell. We specialize in all sizes and styles of extensions, and we pay close attention to architectural detail so the new space blends with the original structure.
That can be a rear addition that opens onto a patio, a garage addition with carriage doors, a great room with timber trusses, a sunroom, or a second story. Inside, the new rooms get the same trim, doors, and floors as the rest of the home, so the seam between old and new disappears.
All permits and plans are handled, professionally and quickly.
Before and after
A whole home rebuild, outside.
Vinyl siding off, house wrap, new cedar shake, a new portico at the front door, and a covered porch over the deck. September 2024 to spring 2025.




Our work
Exteriors and additions from our work
The finished front from the air: cedar shake, a new portico with an arched window above, and the P. Cullen and Son truck in the drive
The finished rear from the air, in cedar shake with the deck and the covered porch
Rear addition with columns, French doors, and a paver patio
Gray sided garage addition with carriage style doors
Great room with timber trusses and French doors
Two story shingle colonial with a covered front porch and a paver driveway
Dark gray colonial with a front portico and stone base
Sunroom with cedar shake interior walls and a window seat
New covered porch framed over the deck, with the walls in house wrap
Questions
Home Additions questions
- Will the addition match my house?
- That is the point. We pay close attention to architectural detail, from siding and trim to window lines, so the extension blends with the original structure.
- Do you handle permits and plans for an addition?
- Yes. All permits and plans are handled, professionally and quickly.
- What size additions do you build?
- All sizes and styles, from a single room to a full second story. Tell us what you have in mind in the Quick Form.
Service area
Home Additions across Nassau and Suffolk.
We work across both counties, in every town. These town pages are a start.
Serving all of Nassau and Suffolk counties. Don't see your town? Pat covers it. Call 631-368-1847.
The whole service areaHome Additions
Tell us about your project.
Quick Form
Tell us about your home and what you want to do. Pat Cullen will get back to you.