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Top-Rated Addition to existing structure builders in Ridge - Updated Nov 2026

Avatar for Arthur DeRosa Building and Remodeling
Arthur DeRosa Building and Remodeling
4.7(
13
)
Addition to Existing Structure - Build

Serving Ridge, 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.


"
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+20

Response time2 days
4 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Alta Renovations Corp
Alta Renovations Corp
5.0(
30
)
Addition to Existing Structure - Build

Serving Ridge, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2019

Free estimates

Warranties offered

"Jose and his crew did an outstanding job on our extensive interior and exterior renovation, which included a new addition. The project covered everything from a new structural roof with shingles and skylights to new construction windows and doors, siding, a Trex deck, and fully renovated kitchen, bathroom, and laundry room. They also refinished a bedroom and installed beautiful hardwood floors. As with any large project, a few unexpected challenges came up, but Jose handled them with professionalism and kept everything moving forward smoothly. His craftsmanship is excellent, and he’s not only easy to work with but also patient and highly skilled at problem-solving. I wouldn’t hesitate to hire Jose again for future projects and highly recommend him to anyone looking for quality work and a reliable contractor."
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+26

Response time8 hrs
22 neighbors recently requested a quote
Recommended by80%of homeowners
Avatar for A.S.M. Home Improvements
A.S.M. Home Improvements
5.0(
12
)
Addition to Existing Structure - Build

Serving Ridge, NY and surrounding areas

Approved

In business since 2021

Free estimates

Credit card accepted

"Anthony is the consummate professional. He worked with us to design a porch that not only looks outstanding but adds curb appeal and value to our home we never could have imagined. He is efficient, neat, completely open to last minute "hey we forgot but could you...", incredibly excellent at everything he does (he's also done for us internal painting, fixed floor planks etc) and most important is that he is just the nicest person with whom to work on home projects. Highly recommend."
Remodeling
Remodeling
Remodeling
Remodeling
2 of 2
fire pit

+48

Response time11 hrs
11 neighbors recently requested a quote
Recommended by58%of homeowners
MGT Construction, Corp.
4.1(
17
)
Addition to Existing Structure - Build

Serving Ridge, NY and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"The construction company, MGT Construction has just completed our +/-600 sq foot deck at our home in Southold. MGT managed the planning: We were determined to build the deck per Southold Town code using Timber-Tech composite decking and railings per their specifications. After we had the survey done Steven coordinated with their architect and liaised all building inspections. He was instrumental in all follow-ups with the town until final approval of the permit. We sourced the pressure-treated framing lumber from Amagansett Lumber and with four feet deep footings the underlying structure is solid and constructed to last 30 years, which is also the guaranteed life of the decking. MGT Construction excels in the carpentry aspect of the decking. They made sure the planks were correctly aligned and the surrounding picture frame planks were precisely fitted. This was also true as well regarding the fitting of the railings. We opted for “drink rails” and their finishing on those is superb. Our overall impression of the construction staff was that they were always courteous and friendly. We did however make the observation that the workers should pay attention to their attire, which at times was needlessly sloppy and awkward. However, they were hard workers and respectful. An electrical subcontractor had to redo work because a supervisor was not on the site. The work was corrected and promptly made without complaint. Cleanup was done in a timely manner and to our satisfaction. Having had other construction work done on homes I can honestly say, MGT Carpentry was professional and their work was excellent. I highly recommend them."
Greenport Second Floor Addition
Orient Complete Ground up House
Greenport Complete Ground Up House
Kitchen Remodeling Project
Orient Complete House Build - Bathrooms

+172

Response time1 day
3 neighbors recently requested a quote
Recommended by75%of homeowners
Avatar for Diamond Craft Builders, Inc.
Diamond Craft Builders, Inc.
New to Angi
Addition to Existing Structure - Build

Serving Ridge, NY and surrounding areas

Approved

In business since 1992

Free estimates

Offers commercial services

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!

Avatar for Dave Densing Construction
Dave Densing Construction
New to Angi
Addition to Existing Structure - Build

Serving Ridge, NY and surrounding areas

Approved

Free estimates

Small jobs welcome

Dave Densing Construction, owner Dave Densing is located in East Patchogue NY and serves local Suffolk County communities. Licensed and Insured. Offering free estimates for home improvements, repairs, interior and exterior.

1 neighbors recently requested a quote
Avatar for Hampton Bay Construction - Babylon Bay Construction
Hampton Bay Construction - Babylon Bay Construction
4.8(
110
)
Addition to Existing Structure - Build

Serving Ridge, NY and surrounding areas

In business since 2008

Free estimates

Emergency services offered

"They were excellent ,I had many works done but they stood out they 5 stars baby construction is a professional and qualified team the owner AJ is experience and knowledgeable in every aspect of home construction and remodeling AJ is a take charge type of guy who is on top every project in our home. The executive manger Sam function as his right hand man and was on call to assist when needed. The Master bathrooms was completely gutted and redone in addition I had work done on my master bedroom including stalling new wood floor and new wood moldings and electrical work and the bathroom was done perfect and bathroom came out beautiful AJ and his complete crew was professional and dedicated respectful easy to deal with and hard working after the workers are finish for the day they meticulously clean up any left over debris this company offers great customer service and delivers high quality work and , do expertly done at a fair price I would highly recommend AJ and his company to anyone who needs an excellent contractor."
Kitchen Remodeling Projects
Bathroom Remodeling Projects
General Remodeling Projects
Kitchen Remodeling Projects
Bathroom Remodeling Projects

+31

Response time11 hrs
Response rate100%
Recommended by96%of homeowners
Avatar for Great Designs Inc
Great Designs Inc
5.0(
24
)
Addition to Existing Structure - Build

Serving Ridge, NY and surrounding areas

In business since 1970

Free estimates

"Very well. Mark is extremely responsive. I had a clear vision of what I wanted to do and Mark was able to get me to a great plan with about three iterations of the plans. Also Mark's plans were approved without revision by the building department which is not easy to do where we were building."
Recommended by100%of homeowners
Avatar for Structure Build
Structure Build
4.6(
25
)
Addition to Existing Structure - Build

Serving Ridge, NY and surrounding areas

In business since 1997

Free estimates

Credit card accepted

"My parents bought a new Condominium in Brooklyn are 2 years ago, and later on we decided to remodel our old bathroom and walls texture in the apt. so my mom asked me to find a remodeling company to remodel the bathroom in the apartment... I had use this Company before and  I decided to call them for an estimate...

Their estimated price was in closer to our budget and we decided to go with them..

We agreed at 28500$ for a complete remodeling, at the end we paid 300$ extra because we decided to replace the old bathtub with a new one witch was unexpected for us ...They finished the work in two weeks and my parents were very happy  with the service provided by Structure Construction...

Thanks Again 


"
Recommended by94%of homeowners
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FAQs for addition to existing structure building service projects in Ridge, NY

You can typically raise your roof by four to eight feet, depending on your home's structure and roof design. The exact amount depends on factors like roof slope and framing support. Raising the roof creates additional interior space, enhances natural light, and increases your home's value. Consult a professional to determine the feasible height increase for your home.

Yes, you need a building permit to raise your roof. Obtaining a building permit ensures your project complies with local building codes and safety regulations. A professional contractor can assist with the permit and inspection process and ensure all legal and safety requirements are met. Your contractor will be familiar with building codes in your area, which can differ between cities or states.

While it's possible to raise a flat roof, it requires extensive structural modifications. Flat roofs lack the attic space and support structures of pitched roofs, so raising them involves significant engineering to ensure safety and durability. This process can be complex and costly, so professional assessment is essential before undertaking a project of this magnitude.

The Ridge, NY homeowners’ guide to addition to existing structure building services

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