Long Island's
Sunroom Specialists
Four-season rooms, three-season rooms, patio enclosures, and screen rooms. Designed for Long Island weather. Installed by people who live here. Since 2007.
Get your free estimate
We'll call within 2 hours to schedule your in-home consultation.
Five types of sunrooms. One company.
From a basic screen porch to a full glass conservatory — every project permitted, inspected, and warranted.
How it works
Free in-home estimate
Anthony or Steve visits your property. We measure, check setbacks, and give you a real number — not a call-center quote.
Design & permits
We prepare drawings, handle the Nassau or Suffolk County permit application, and keep you updated. 3–8 weeks for approval.
Installation
Same crew, every day. You get daily progress updates. Site is clean when we leave each evening.
Inspection & walkthrough
We coordinate the county inspection. Anthony does a personal walkthrough with you before we call it done.
4.9 stars · 174+ reviews
All reviews are from real Long Island homeowners on Google and Houzz.
Anthony walked me through every option without overselling. The four-season room came in exactly on quote. Permit pulled, passed inspection, done in 8 weeks.
Jennifer M.
Massapequa, NY
We got three quotes. These guys were the only ones who actually measured our slab and checked the setback before giving us a number. Three-season room is perfect.
Tom D.
Levittown, NY
The crew was here every day, same guys. Site was clean. Room is beautiful. Worth every dollar.
Patricia R.
Huntington, NY
Best home improvement we've done in 20 years. Three weeks start to finish. The screens are tight and the ceiling fan makes it perfect all summer.
Frank P.
Oceanside, NY
Recent jobs across Long Island
Towns we serve
Sunroom contractor Cold Spring Harbor NY & Matinecock
As a sunroom contractor Cold Spring Harbor NYhomeowners have trusted since 2007, we've built dozens of four-season rooms and patio enclosures across Cold Spring Harbor (ZIP 11724), Laurel Hollow, and Lloyd Neck. Cold Spring Harbor is a Gold Coast hamlet in the Town of Huntington, Suffolk County — wooded hillside lots, bluestone terraces overlooking the harbor, and waterfront properties that demand estate-level craftsmanship.
We know the Town of Huntington Building Department at 100 Main Street, the deed covenant review process on Cold Spring Harbor streets, and how to engineer foundations on the steep North Shore grades. Every sunroom contractor Cold Spring Harbor project we do comes with a fixed-price contract, full Town of Huntington permit handling, and Anthony Pastore's personal walkthrough at completion.
We're also the go-to sunroom contractor Matinecock NYhomeowners call for estate-level work. Matinecock is an incorporated Nassau County village where 2–5 acre lots and strict architectural standards mean the sunroom has to look like it was always part of the house. We handle Village of Matinecock permits, coordinate with homeowners' architects, and spec thermally broken aluminum and triple-pane glass on every Matinecock project.
Recent North Shore project highlights: Four-season rooms on Lawrence Hill Road in Cold Spring Harbor overlooking wooded ravines. Patio enclosure conversions on bluestone terraces in the Cold Spring Harbor hamlet core. Glass room additions on Shore Road harbor-view estates. Estate four-season room in Matinecock on a 4-acre wooded parcel — triple-pane glass, thermally broken aluminum, coordinated with property architect. Every project permitted and inspected on first submission.
Cost guides, permit timelines, project examples from Lloyd Neck to Laurel Hollow and Matinecock, and answers to the most common North Shore sunroom questions are on the dedicated area pages.
All season sunrooms across Nassau County
We are a sunroom contractor serving every corner of Nassau County — from Merrick and North Merrick in the Town of Hempstead to Manhasset and Great Neck on the North Shore. Our all season sunrooms are engineered for Long Island's climate: insulated Low-E glass, foam-core roof panels, and a dedicated HVAC connection so you get year-round comfort without drafts or condensation.
Nassau County homeowners choosing all season sunrooms get a fixed-price contract, full permit handling through the Town of Hempstead, Town of North Hempstead, or Town of Oyster Bay building departments, and a single crew from footing pour to final inspection. We have installed four-season rooms, three-season rooms, and patio enclosures in Rockville Centre, Merrick, North Merrick, Manhasset, Massapequa, Oceanside, and dozens of other Nassau County communities since 2007.
Popular Nassau County projects: All season sunrooms on colonial and split-level homes in Merrick. Glass room additions overlooking manicured yards in Manhasset. Patio enclosures converting existing concrete slabs in Rockville Centre. Three-season screen rooms for North Merrick ranch homes. Every Nassau County project is permitted, inspected, and backed by our workmanship warranty.
Sunroom Contractor Manhasset, NY
Sunroom contractor in Manhasset— Long Island Sunroom Co. has completed four-season room and all season sunroom projects throughout Manhasset and the Manhasset Hills area. Manhasset's housing stock ranges from mid-century Colonials and Tudors on large lots to newer construction along Shelter Rock Road. Most projects here are rear-yard all season sunrooms that add heated, year-round living space overlooking wooded or landscaped yards. We handle every Town of North Hempstead permit for structural sunroom additions and manage engineering sign-off from our in-house PE.
Manhasset sunroom projects typically range from $42,000–$95,000 for a fully permitted, year-round all season sunroom with insulated Low-E glass, foam-core roof panels, and HVAC integration. We also build three-season rooms and patio enclosures at lower price points. All season sunroom contractor Manhasset calls are typically scheduled for in-home consultation within 5 business days.
Manhasset sunroom detailsSunroom Contractor Huntington Bay & Huntington Station, NY
Sunroom contractor in Huntington Bay and Huntington Station — the Town of Huntington is one of our most active Suffolk County service areas. Huntington Bay is an estate-and-waterfront community where large lots support significant sunroom additions — full four-season rooms with panoramic glass overlooking Cold Spring Harbor or Lloyd Neck are common projects here. Huntington Station has a more diverse housing stock of 1960s and 1970s ranches and colonials where three-season rooms and patio enclosures represent the most popular projects.
All sunroom additions in Huntington Bay and Huntington Station require Town of Huntington building permits — we handle the full application, engineering drawings, and inspection coordination. Sunroom contractor Nassau County and Suffolk County — we cover the full Long Island service area from a single crew based in the Nassau/Suffolk border area, which gives us 30–45 minute response across both counties.
Huntington service area detailsSunroom resources for Long Island homeowners
Sunroom FAQ
Most Long Island sunroom projects run $18,000–$65,000 depending on the type and size. A basic screen room starts around $8,000. A four-season sunroom in the 200–300 sq ft range typically runs $35,000–$55,000. We provide free, itemized estimates.
Yes. Both Nassau and Suffolk Counties require a building permit for any attached sunroom or room addition. We handle all permit applications as part of every project — you don't need to deal with the building department.
Screen rooms and patio enclosures take 2–4 weeks from permit approval. Three-season rooms run 3–5 weeks. Four-season sunrooms with full insulation take 6–10 weeks. Glass room additions: 10–16 weeks.
Yes — especially on Long Island where outdoor living space is at a premium. A professionally installed four-season sunroom typically returns 50–70% of its cost in resale value, and significantly increases buyer interest.
An all season sunroom (also called a four-season room) is a fully insulated, climate-controlled glass room addition you can use year-round — even through Long Island winters. It includes insulated glass, a heating and cooling connection, and meets residential building code. For Nassau County and Suffolk County homeowners, an all season sunroom adds usable square footage and typically recoups 50–70% at resale.
Yes. Cold Spring Harbor is one of our most active service areas. We handle Town of Huntington permits, work on estate lots and waterfront properties along the North Shore, and have completed dozens of four-season rooms and patio enclosures in Cold Spring Harbor, Huntington, Lloyd Neck, and Laurel Hollow since 2007.
We install all season sunrooms throughout Nassau County including Merrick, North Merrick, Rockville Centre, Manhasset, Massapequa, Great Neck, Syosset, Muttontown, Matinecock, and Oceanside. We handle permits for every Nassau County municipality and the Town of Hempstead, Town of North Hempstead, and Town of Oyster Bay building departments.
Absolutely. Patio enclosure conversions are one of our most popular projects across Long Island. If you have an existing concrete slab, paver patio, or bluestone terrace, we can build a three-season or four-season sunroom directly on it — often saving thousands compared to a ground-up addition. We serve patio enclosure projects in Brookhaven, Babylon, Huntington, and across Nassau and Suffolk Counties.
All-Season Sunrooms on Long Island — Nassau County
All-season sunrooms on Long Islandare the fastest-growing home addition in Nassau County — driven by both the desire for usable year-round living space and the equity impact on South Shore and North Shore homes. An all-season sunroom differs from a three-season room by having insulated panels or thermal glass, a dedicated HVAC connection (mini-split or extension of the home's system), and a foundation that handles Long Island's frost line (typically 36 inches). A screened porch becomes uncomfortable by October. An all-season room is used 12 months a year.
Our Nassau County sunroom work covers the full spectrum: four-season glass sunrooms with aluminum frames (the most popular), vinyl-frame conservatories for North Shore estate properties, and insulated panel rooms that match existing home architecture in towns like Merrick, Massapequa, Manhasset, and Great Neck. Every Nassau County project goes through the local building department for a building permit — our team handles all permit applications, typically running $400–$1,200 depending on the town and project scope.
All-season sunroom cost in Nassau County runs $35,000–$95,000 installed for most residential projects. The table below shows the current price ranges by type:
| Sunroom Type | Nassau County Cost | Typical Sq Ft | Best For |
|---|---|---|---|
| 3-season room (screened) | $18,000–$34,000 | 100–200 sf | Spring/summer/fall use |
| 4-season glass (aluminum frame) | $38,000–$65,000 | 120–250 sf | Year-round, most popular |
| Insulated panel sunroom | $45,000–$78,000 | 150–300 sf | Best insulation, solid roof option |
| Conservatory / Victorian | $62,000–$110,000 | 180–400 sf | North Shore estates, garden rooms |
| Two-story addition (sunroom + above) | $95,000–$180,000 | 200–500 sf total | Major addition, bedroom above |
Nassau County 2026 pricing. Costs vary by foundation type, HVAC configuration, and permit scope. Long Beach, Atlantic Beach, and Five Towns coastal properties may require additional flood-zone engineering.
Sunrooms in Merrick, Massapequa, Manhasset & Great Neck
These four Nassau County markets account for a large share of our sunroom work. In Merrick and Massapequa (South Shore), the primary demand is for four-season rooms that extend the living area into the rear yard — typically 150–200 sf glass rooms off the kitchen or family room. In Manhasset and Great Neck (North Shore / Port Washington corridor), the demand skews toward larger conservatory-style rooms for homes with more square footage and lot depth.
Permit timelines in Nassau County towns: Town of Hempstead (which covers Merrick, Massapequa, Merrick) runs 3–6 weeks for a sunroom permit. Town of North Hempstead (Manhasset, Great Neck, Port Washington) runs 4–8 weeks. We file all permit documents and manage the inspection schedule. No work begins until permits are approved and posted.
Ready to add a sunroom to your Long Island home?
Free estimate, no obligation. We schedule in-home consultations within 5 business days.
174+ 5-star reviews · Licensed in Nassau & Suffolk · 1800+ rooms installed