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Find Second story addition builders in Central Islip

Avatar for Sentri Homes

Sentri Homes

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Approved Pro

Sentri Homes

New on HomeAdvisorNew on HomeAdvisor
Approved Pro
2184 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.


Integrity Custom Carpentry and Remodeling

No reviews yet

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!


Long Island Restoration And Construction, Inc.

No reviews yet

Long Island Restoration And Construction, Inc.

No reviews yet
13 years of experience

Long Island Restoration And Construction, Inc.'s Proprietor has been involved for over 30 years in all aspects of Construction, Commercial Building and Residence Code; from large General Contracting Projects to all phases of Home Owners’ House Renovation & Restoration Services. LIRCI also has Licensed Electricians & Plumbers to have on-site. Anything that you need done, my Company will perform, at an economical, competitive price.

Long Island Restoration And Construction, Inc.'s Proprietor has been involved for over 30 years in all aspects of Construction, Commercial Building and Residence Code; from large General Contracting Projects to all phases of Home Owners’ House Renovation & Restoration Services. LIRCI also has Licensed Electricians & Plumbers to have on-site. Anything that you need done, my Company will perform, at an economical, competitive price.


AUTHORIZED CONTRACTING CO INC

5.00(
1
)

AUTHORIZED CONTRACTING CO INC

5.00(
1
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

We are a general contracting business located in Bohemia, NY. We have been in business for over 30yrs. We have a full crew capable of both retail and commercial work. We also have a retail store design team for those interested in opening retail stores.

We are a general contracting business located in Bohemia, NY. We have been in business for over 30yrs. We have a full crew capable of both retail and commercial work. We also have a retail store design team for those interested in opening retail stores.


Avatar for A G Reliable Remodeling

A G Reliable Remodeling

4.29(
7
)

A G Reliable Remodeling

4.29(
7
)
Customers say: True professional
27 years of experience

Reliable Remodeling is a full service remodeling company in business for over 20 years comitted to great service, great value and excellent work.

"Did a good job on the kitchen cabinets and walls came out good new floor installed came out good kitchen window was installed fine but the wood trim very disappointed when removing wood trim to replace window installation was good but when trim was put back on what a disappointment they put the trim on and siliconed the openings so mwater and air would not come in silicone all over the wood nail holes were covered with silicone instead of wood filler wife and I were very disappointed he was suppose to clean and remove soot from wood and then refinish per insurance estimate he told me he did not put it in his estimate so in order to fix it I would have to pay to have it done the quality of the trim is not professional work see enclosed photos"

Homeowner on May 2022

Reliable Remodeling is a full service remodeling company in business for over 20 years comitted to great service, great value and excellent work.

"Did a good job on the kitchen cabinets and walls came out good new floor installed came out good kitchen window was installed fine but the wood trim very disappointed when removing wood trim to replace window installation was good but when trim was put back on what a disappointment they put the trim on and siliconed the openings so mwater and air would not come in silicone all over the wood nail holes were covered with silicone instead of wood filler wife and I were very disappointed he was suppose to clean and remove soot from wood and then refinish per insurance estimate he told me he did not put it in his estimate so in order to fix it I would have to pay to have it done the quality of the trim is not professional work see enclosed photos"

Homeowner on May 2022


Dynamic Kitchens & Furniture

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Dynamic Kitchens & Furniture

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Dynamic Kitchens & Furniture in Copiague, NY, builds custom kitchens and bathroom vanities. Our business is family-owned-and-operated.

Dynamic Kitchens & Furniture in Copiague, NY, builds custom kitchens and bathroom vanities. Our business is family-owned-and-operated.


RB PAVERS OF NY INC.

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RB PAVERS OF NY INC.

No reviews yet

Family owned company. Hardscaping pavers, blue stone walkways and steps, Any masonry jobs.

Family owned company. Hardscaping pavers, blue stone walkways and steps, Any masonry jobs.


Ernest Construction Inc

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Ernest Construction Inc

No reviews yet
22 years of experience

At Ernest Construction Inc., we provide beautiful remodeling, refurbishing, and specialty construction jobs tailor fit to your specific needs and budget.

At Ernest Construction Inc., we provide beautiful remodeling, refurbishing, and specialty construction jobs tailor fit to your specific needs and budget.


Contractor Sandoval Carpentry & Painting

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Contractor Sandoval Carpentry & Painting

No reviews yet
23 years of experience

Our business is ran by the boss Atilano Sandoval, who is the person in charged of leading the job. Whom ever is working on any of our jobs responds to Atilano. We are perfectionist, all work done by us is completely professional and as neat as possible. You can make payments by check or cash. We do payment plans while we are getting the job done. Once the job is completely done, all payment should be made.

Our business is ran by the boss Atilano Sandoval, who is the person in charged of leading the job. Whom ever is working on any of our jobs responds to Atilano. We are perfectionist, all work done by us is completely professional and as neat as possible. You can make payments by check or cash. We do payment plans while we are getting the job done. Once the job is completely done, all payment should be made.


New Vision Home Improvements

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New Vision Home Improvements

No reviews yet

I am a licensed and insured contractor, specializing in everything- from windows, doors, flooring/tiling, kitchens, and baths to decks, siding, roofing, and custom woodwork.

I am a licensed and insured contractor, specializing in everything- from windows, doors, flooring/tiling, kitchens, and baths to decks, siding, roofing, and custom woodwork.

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FAQs for second story addition building service projects in Central Islip, 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 Central Islip, 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.