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Find Second story addition builders in Old Westbury

Avatar for Sentri Homes

Sentri Homes

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Sentri Homes

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2653 local quotes requested

Sentri Homes is a full-service contractor delivering high-end home additions, whole-home remodels, new custom builds, luxury kitchens, structural framing, roof replacements, and every major renovation. We assign a dedicated project manager to every job, deliver meticulous craftsmanship with clear communication, and back our work with an industry-leading warranty to ensure complete peace of mind on your largest investments. Our in-house team of licensed builders and master craftsmen consistently earns 5-star reviews by turning big visions into stunning, high-value homes—when you need one trusted partner who truly does it all, we’re the proven choice.

Sentri Homes is a full-service contractor delivering high-end home additions, whole-home remodels, new custom builds, luxury kitchens, structural framing, roof replacements, and every major renovation. We assign a dedicated project manager to every job, deliver meticulous craftsmanship with clear communication, and back our work with an industry-leading warranty to ensure complete peace of mind on your largest investments. Our in-house team of licensed builders and master craftsmen consistently earns 5-star reviews by turning big visions into stunning, high-value homes—when you need one trusted partner who truly does it all, we’re the proven choice.


rams home improvement

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rams home improvement

No reviews yet
41 years of experience

work alone or with 1 or 2 helpers.charge by the hour or the amount of work

work alone or with 1 or 2 helpers.charge by the hour or the amount of work


Bailey Remodeling

5.00(
6
)

Bailey Remodeling

5.00(
6
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

We are a family company that offers quality craftsmenship at an affordable price. We believe in always doing our very best. That means going above and beyond to surpass expectations and make sure your home is everything you want it to be.

We are a family company that offers quality craftsmenship at an affordable price. We believe in always doing our very best. That means going above and beyond to surpass expectations and make sure your home is everything you want it to be.


BDK Construction LLC.

No reviews yet

BDK Construction LLC.

No reviews yet
19 years of experience

Growing construction company able to complete all phases of new and old construction

Growing construction company able to complete all phases of new and old construction


Built-more Builders & Contractors Inc.

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Built-more Builders & Contractors Inc.

No reviews yet
25 years of experience

Remodeling of homes and small commercial buildings

Remodeling of homes and small commercial buildings


Scranton Contracting Company

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Scranton Contracting Company

No reviews yet
18 years of experience

Our company Employs 19 people and 8 different sub-contractors.. Billing is set such that, half the cost of the project is provided up front and the remainder is paid upon completion

Our company Employs 19 people and 8 different sub-contractors.. Billing is set such that, half the cost of the project is provided up front and the remainder is paid upon completion


Jonathan Alexander & Sons Moving

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Jonathan Alexander & Sons Moving

No reviews yet
50 years of experience

Alexander & Son's Moving has over 30 years of experience in the moving industry. We are a professional family owned business that will handle your items with care from beginning to end. We will make the relocation process an easy one. We have reputable references, please contact us for more information.

Alexander & Son's Moving has over 30 years of experience in the moving industry. We are a professional family owned business that will handle your items with care from beginning to end. We will make the relocation process an easy one. We have reputable references, please contact us for more information.


Malka Framing/ Malka Carpentry Contracting Inc

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Malka Framing/ Malka Carpentry Contracting Inc

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Malka Framing/Malka Carpentry Contracting Inc is a custom framing contractor specializing in new construction on commercial and residential properties. Malka Contractors Inc has been building new homes to families and businesses in Monsey New York for over 20 years. We believe that it is a good time to build a new home or remodel the one you are in. Interest rates are at the lowest we have seen in decades and you can benefit from the latest design options. Call us today!

Malka Framing/Malka Carpentry Contracting Inc is a custom framing contractor specializing in new construction on commercial and residential properties. Malka Contractors Inc has been building new homes to families and businesses in Monsey New York for over 20 years. We believe that it is a good time to build a new home or remodel the one you are in. Interest rates are at the lowest we have seen in decades and you can benefit from the latest design options. Call us today!


Bond Construction

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Bond Construction

No reviews yet
13 years of experience

Bond Construction is a complete, full service, interior contractor specializing in remodeling and new construction of fine residential and commercial projects in New York City.

Bond Construction is a complete, full service, interior contractor specializing in remodeling and new construction of fine residential and commercial projects in New York City.


Visionary Stone Works

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Visionary Stone Works

No reviews yet

Experienced Stone Mason/Tile Setter & Carpenter Available in Suffolk/Nassau Long Island! Are You Need Top-Tier Craftsmanship for Your Construction Project? Look No Further! With Over A Decade of Experience Working on High End Luxury Living Spaces and Massive Commercial Projects in New York City. I Specialize in Transforming Spaces with Precision and Creativity. From Stunning Kitchen Countertops and Luxurious Master Bathrooms to Rough Carpentry, Finish Molding and Elegant Outdoor Spaces. I Bring Your Visions to Life. Services Offered: Kitchens & Bathrooms Stone Steps & Patios Fireplaces & Bars Finish Molding & Decking Vinyl & Laminate Flooring Anything Masonry, Stone, Tile, Wood & More What Sets Me Apart? My Commitment to Perfection and Fair, Negotiable Prices. Whether It's Revamping Your Indoor Spaces or Creating an Inviting Outdoor Oasis, I'm Your Go-To Professional.

Experienced Stone Mason/Tile Setter & Carpenter Available in Suffolk/Nassau Long Island! Are You Need Top-Tier Craftsmanship for Your Construction Project? Look No Further! With Over A Decade of Experience Working on High End Luxury Living Spaces and Massive Commercial Projects in New York City. I Specialize in Transforming Spaces with Precision and Creativity. From Stunning Kitchen Countertops and Luxurious Master Bathrooms to Rough Carpentry, Finish Molding and Elegant Outdoor Spaces. I Bring Your Visions to Life. Services Offered: Kitchens & Bathrooms Stone Steps & Patios Fireplaces & Bars Finish Molding & Decking Vinyl & Laminate Flooring Anything Masonry, Stone, Tile, Wood & More What Sets Me Apart? My Commitment to Perfection and Fair, Negotiable Prices. Whether It's Revamping Your Indoor Spaces or Creating an Inviting Outdoor Oasis, I'm Your Go-To Professional.

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FAQs for second story addition building service projects in Old Westbury, NY

For many homeowners, building up is worth the expense because it provides the extra bedrooms or living areas that can’t be accommodated within the existing footprint. A larger, updated home often commands a higher resale price, recouping a sizable share of the project cost while allowing you to stay in the neighborhood you love. Run the numbers with a real estate agent and contractor to ensure the expected return and day-to-day benefits align with your goals.

Whether it makes more sense to build up or out depends on your lot, budget, and local code. Building up preserves yard space and involves less foundation work, but you may need to vacate the home during construction. Building out avoids staircases and can proceed while you stay put; however, it encroaches on the yard and may face setback limits. Compare both options with your contractor before making a decision.

A structural engineer will first inspect the existing foundation for cracks, footings, and load capacity. Depending on the findings, the crew may pour new concrete footings, install steel or concrete piers, add reinforced beams, or tie additional rebar into the slab. These upgrades redistribute the weight of the new floor and bring the structure up to code. Your contractor will outline the specific reinforcement plan and timeline once the engineering report is complete.

The Old Westbury, NY homeowners’ guide to second story addition building services

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