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Find Second story addition builders in Commack

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Sentri Homes

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Approved Pro

Sentri Homes

New on HomeAdvisorNew on HomeAdvisor
Approved Pro
1550 local quotes requested
2 years of experience

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


Integrity Custom Carpentry and Remodeling

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Integrity Custom Carpentry and Remodeling

No reviews yet
19 years of experience

Finish Carpentry and Custom Woodworking, we have 5 finish carpenters, we seldom use subcontractors, Suffolk County Home Improvement license #46665-h, Fully insured with 2,000,000 General Liability policy and Workers Compensation insurance, we offer free estimates, Discounts offered for Angies list customers. We are clean cut, reliable, honest finish carpenters who can be trusted to take your vision for your home and make it a reality, or we can design it for you. All work is fully gauranteed!

Finish Carpentry and Custom Woodworking, we have 5 finish carpenters, we seldom use subcontractors, Suffolk County Home Improvement license #46665-h, Fully insured with 2,000,000 General Liability policy and Workers Compensation insurance, we offer free estimates, Discounts offered for Angies list customers. We are clean cut, reliable, honest finish carpenters who can be trusted to take your vision for your home and make it a reality, or we can design it for you. All work is fully gauranteed!


Faux Wood Beams

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Faux Wood Beams

No reviews yet
53 years of experience

Faux wood beams and other architectural accents for home improvement. Lightweight, durable and sustainable alternatives to natural material that are easy to install and available to be shipped to your home or project site anywhere.

Faux wood beams and other architectural accents for home improvement. Lightweight, durable and sustainable alternatives to natural material that are easy to install and available to be shipped to your home or project site anywhere.


MCM Construction

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MCM Construction

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lally acoustical consulting llc

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lally acoustical consulting llc

No reviews yet
17 years of experience

At lally acoustical consulting, we provide creative, informed, and practical acoustical solutions for design professionals as well as troubleshooting services for noise and vibration problems. lally acoustical consulting is a woman owned business and is an Approved Noise Consultant with the New York City Department of Environmental Protection (NYC DEP).

At lally acoustical consulting, we provide creative, informed, and practical acoustical solutions for design professionals as well as troubleshooting services for noise and vibration problems. lally acoustical consulting is a woman owned business and is an Approved Noise Consultant with the New York City Department of Environmental Protection (NYC DEP).


energy wise construction solutions L.L.C.

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energy wise construction solutions L.L.C.

No reviews yet
17 years of experience

we are a full service contractor and have been in the residential construction field for 15 years. our staff is proffesional and curtious and we will always go the extra mile to ensure our customers satisfaction. we are licensed and insured and have never not completed a job to our customers satisfaction. we will meet with you at your home and ensure that our proposal meets your needs fully. and there is never a charge for our consultations.

we are a full service contractor and have been in the residential construction field for 15 years. our staff is proffesional and curtious and we will always go the extra mile to ensure our customers satisfaction. we are licensed and insured and have never not completed a job to our customers satisfaction. we will meet with you at your home and ensure that our proposal meets your needs fully. and there is never a charge for our consultations.


Personal Touch Contracting

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Personal Touch Contracting

No reviews yet
41 years of experience

all phases of home improvements ,kitchen and bath renovations, garage and basement conversions

all phases of home improvements ,kitchen and bath renovations, garage and basement conversions


Outdoor Design Solutions

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Outdoor Design Solutions

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12 years of experience

Landscape Design & Build Services,

Landscape Design & Build Services,


SALERNO'S KITCHEN CABINETS INC

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SALERNO'S KITCHEN CABINETS INC

No reviews yet
62 years of experience

Salerno's Kitchens has been an industry leader in custom cabinetry with nearly 50 years of exemplary service, reputation and design. Luciano Salerno has been the inspiration for the hard work and devotion that our team of designers and skilled professionals look forward every day to turn your ideas and desires into reality. Today, and after 51 years members of the Salerno family take pride in continuing the "old world" tradition of personally handling every aspect in the creation of custom cabinets and wood furnishings for those who believe that quality, combined with beauty is priceless

Salerno's Kitchens has been an industry leader in custom cabinetry with nearly 50 years of exemplary service, reputation and design. Luciano Salerno has been the inspiration for the hard work and devotion that our team of designers and skilled professionals look forward every day to turn your ideas and desires into reality. Today, and after 51 years members of the Salerno family take pride in continuing the "old world" tradition of personally handling every aspect in the creation of custom cabinets and wood furnishings for those who believe that quality, combined with beauty is priceless

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FAQs for second story addition building service projects in Commack, 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 Commack, 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.