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Top-Rated Sunroom or patio enclosure builders in Greenlawn - Updated Nov 2026

Avatar for BuildingLI.com - BLI Facilities LLC
BuildingLI.com - BLI Facilities LLC
5.0(
32
)
Sunroom or Patio Enclosure - Build

Serving Greenlawn, NY and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"The guys at HM construction group did an amazing job with my project! I needed my commercial space completely demoed and rebuilt. These guys got the job done on time and didnâ  t amazing job doing it. I highly recommend them."
before demo
kitchen demolition
demolition complete
kitchen tile job in progress
kitchen tile

+172

Response time7 hrs
Recommended by76%of homeowners
Avatar for Four Seasons Sunrooms - Long Island
Four Seasons Sunrooms - Long Island
4.4(
7
)
Sunroom or Patio Enclosure - Build

Serving Greenlawn, NY and surrounding areas

Approved (Corporate)

In business since 1975

Free estimates

Warranties offered

"I not only had one of their sunrooms installed, I actually have two, which have become my two favorite things in my home! I am so happy with their workmanship, their great communication skills, I just love the product. They took care of any issues immediately. I highly recommend them to anyone. Even though people may think it is expensive, this is a very luxurious type of item and I do think they provide a great value for your money!"
Sunroom
Sunroom
Pergola
Pergola
Pergola

+4

Response time10 mins
Response rate100%
135 neighbors recently requested a quote
Avatar for Arthur DeRosa Building and Remodeling
Arthur DeRosa Building and Remodeling
4.7(
13
)
Sunroom or Patio Enclosure - Build

Serving Greenlawn, NY and surrounding areas

Approved

In business since 1986

Free estimates

Customers say: True professional

"

This is the 2nd major project I contracted Art DeRosa & Co for.  The 1st being 4 years ago a major living room/family room renovation which was hugely successful.  That 1st experience led me to award Art (after several other competitive quotes) this 2nd and far larger & more complex project.







Overall it went well but this was a complicated project encompassing all the typical trades and expertise of building a new luxury house but far more complicated because it was a renovation performed while we were living in the home. Dust partition walls with wood framing had to be erected in several locations in the house which included temporary doors for entering and egress in certain areas of the remaining living areas of the house in order to protect the remaining house from dust and demolition , as well as, provide privacy for us during construction. 

Experience, Experience, Experience and Professionalism, Professionalism, Professionalism are the hallmarks of Art DeRosa and company.  He is a seasoned performer and pretty much seen it all.  Art has such a vast amount of home construction experience in both hi-end and medium end homes that he can draw upon a wealth of knowledge in all construction disciplines to implement a fine finished result.  As a former tool and die maker his penchant for hi-precision finish work yields highest quality appearances to things like moldings; trim; windows; doors; floors; etc. etc. 

This complex renovation project lasted 7 months which was within the initial time estimate given at the beginning and Art DeRosa and team were here every single day, day in and day out,  bright and early during that time frame. He did not start any other projects and stayed on the job day-in and day-out even when other sub-contractors such as plumbers and electricians were on the job site excluding his people from doing any other work. Art DeRosa and team were here every single day until final signoff.

I would not hesitate to recommend Art DeRosa & Co for any planned New House and/or House Renovation of any kind.


"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+20

Response time2 days
4 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Gus Anax Home Improvements, Inc.
Gus Anax Home Improvements, Inc.
5.0(
21
)
Sunroom or Patio Enclosure - Build

Serving Greenlawn, NY and surrounding areas

Approved

In business since 1998

Free estimates

Small jobs welcome

"Gus and his crew were professional and accurate. They installed siding on our large colonial house which was in need of many exterior repairs, They made the house like new. Gus stayed in the budget. The place was left clean after each day of work. The entire job took less than 4 days. Gus provided everything needed and went above and beyond to make sure everything was repaired, sealed and finished with great detail. Several of our neighbors commented on the efficiency of the workers and on the beautiful finished exterior. We plan to use Gus for all our future projects because he is is knowledgeable of construction and has access to different craftsman he employs for all aspects of home renovation."
Kings Park
Babylon
East Northport
Miller Place
Massapequa

+17

Response time10 mins
Recommended by94%of homeowners
Concorde Remodeling, Inc.
4.2(
48
)
Sunroom or Patio Enclosure - Build

Serving Greenlawn, NY and surrounding areas

Approved

In business since 2008

Free estimates

Customers say: Quick response

We are a locally owned and operated company serving the Long Island area. We are committed to excellence in everything we do. Remodeling is our passion and customer service is our specialty. Please call Concorde Remodeling, Inc., today! \n \n \n*DOES NOT HANDLE INSURANCE CLAIMS *

Remo Before and After
Remo Before and After
Remo Before and After
Remo Before and After
Remo Before and After

+7

2 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Carpenters NY
Carpenters NY
New to Angi
Sunroom or Patio Enclosure - Build

Serving Greenlawn, NY and surrounding areas

Approved

In business since 2000

Free estimates

Credit card accepted

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business! Book with us online or feel free to give us a call today!

Great Projects!
Great Projects!
Great Projects!
Great Projects!
Great Projects!

+44

Response time3 hrs
Avatar for Royal Windows & Doors
Royal Windows & Doors
4.7(
106
)
Sunroom or Patio Enclosure - Build

Serving Greenlawn, NY and surrounding areas

In business since 1989

Free estimates

Emergency services offered

"We are completely delighted. Everything went perfectly. Danny, our sales representative, was great at explaining options, and was always available for questions. The expert installers, Andreas and Dmitri, were fun to work with, responsive to our requests, and even installed our new doorbell. I look forward to working with this excellent company again for new windows."
Royal Custom Entry Door
Royal Entry Door
Royal Siding and Windows
Custom Door with Side Lites
Additional Photos

+73

Recommended by93%of homeowners
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FAQs for sunroom or patio enclosure building service projects in Greenlawn, NY

A sunroom is a fully enclosed space with walls of windows or glass. It allows you to enjoy the outdoors from the comfort of the indoors, protected from bugs and weather. It functions as an additional room in your home. A covered patio extends your home's roof over an outdoor area, providing shade and shelter while remaining open to the fresh air. It's a great way to enjoy outdoor living while being protected from sun and rain.

Adding screens to your porch is the most budget-friendly way to enclose it. Screening keeps out insects and debris while letting you enjoy the breeze and outdoor ambiance. It's less expensive than installing full walls or glass enclosures and doesn't usually require permits, making it an efficient way to upgrade your porch.

If you're transforming your porch into a fully enclosed living space like a sunroom, you'll likely need a sturdy foundation, such as a reinforced concrete slab, to support the structure. For a simple screened-in porch, you might be able to use the existing floor and support posts without additional foundation work. It's best to consult a professional to determine what's needed for your project.

An enclosed porch can be considered a living space if it's fully enclosed with solid walls and windows, has a proper roof, and includes heating and cooling systems. It should also have direct access from inside your home. When these criteria are met, the space becomes an extension of your home's livable area.

The Greenlawn, NY homeowners’ guide to sunroom or patio enclosure building services

From average costs to expert advice, get all the answers you need to get your job done.