How Much Does a Sunroom Cost on Long Island?
Real numbers from a contractor who does this work every day. Nassau and Suffolk County specific pricing — no national averages.
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In-home estimates are free and itemized.
Sunroom pricing ranges
Four-Season Sunroom
A fully insulated, climate-controlled room addition with HVAC connection, thermal glass, and a permanent foundation. The most popular choice for Long Island homeowners who want a true living space extension.
Three-Season Room
A screened or glass-paneled room that connects your home to the outdoors. Perfect for Long Island's 9-month pleasant season. Not insulated for winter use but a huge upgrade over an open deck.
Patio Enclosure
Convert an existing patio or deck into an enclosed living space with sliding glass or screen panels. The most cost-effective way to add covered outdoor space to your Long Island home.
Screen Room & Porch
A fully screened enclosure with sturdy aluminum framing, ceiling fans, and built-in lighting. The classic Long Island back porch upgrade that keeps mosquitoes out and cool breezes in.
Glass Room Addition
A premium glass-walled and glass-roofed architectural extension that becomes a seamless part of your home. Think conservatory-level quality with modern Long Island design sensibility.
Why Long Island pricing runs higher than national averages
National cost guides typically quote lower numbers than what Long Island contractors charge. There are three reasons:
- Labor. Wages are higher here. A skilled installer working in Nassau County earns significantly more than their counterpart in Tennessee.
- Permitting. Nassau and Suffolk County permit fees, engineering requirements, and snow load specifications add real cost to every project.
- Salt air. Coastal climate requires better materials — marine-grade sealants, corrosion-resistant fasteners, aluminum rated for coastal exposure. This costs more.
A screen room that costs $6,000 nationally costs $9,000–$14,000 here because we're using the right materials for the right climate, with the right labor, through the right permit process.
Common questions
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.
Ready to add a sunroom to your Long Island home?
Free estimate, no obligation. We typically schedule consultations within 2 weeks.
174+ 5-star reviews · Licensed in Nassau & Suffolk · 1800+ rooms installed