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Find Basement remodelers in Newtown

Joseph Giglio Construction

5.00(
4
)
Approved Pro

Joseph Giglio Construction

5.00(
4
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
54 years of experience

Accomplish your construction goals easily with the help of Joseph Giglio Construction. Our licensed experts are always ready to assist you with any renovation or building project. Whether you want a custom home or new drywall installed in your office, our team has the skills to get the job done. Call us today!

"I have used them for 25 years there work is beyond reproach."

Leonard L on April 2017

Accomplish your construction goals easily with the help of Joseph Giglio Construction. Our licensed experts are always ready to assist you with any renovation or building project. Whether you want a custom home or new drywall installed in your office, our team has the skills to get the job done. Call us today!

"I have used them for 25 years there work is beyond reproach."

Leonard L on April 2017


Avatar for JR General Contractor, LLC

JR General Contractor, LLC

4.83(
15
)
Approved Pro

JR General Contractor, LLC

4.83(
15
)
Approved Pro
Customers say: Quick response
16 years of experience
Free onsite estimate

JR General Contractor LLC, is committed to excellence every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

"Yes they did an excellent job"

Louise R on May 2025

JR General Contractor LLC, is committed to excellence every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

"Yes they did an excellent job"

Louise R on May 2025


Avatar for Owens Corning Basement Finishing System

Owens Corning Basement Finishing System

4.75(
73
)
Approved Pro

Owens Corning Basement Finishing System

4.75(
73
)
Approved Pro
Customers say: Quality work
Recommended by 94% of Angi customers
Recommended by 94% of HomeAdvisor customers
107 local quotes requested

Lux Renovations, LLC, has been serving New England homeowners since 2002. We've finished over 8000 basements in New England, usually in 2-3 weeks. Our dedication to customer experience and satisfaction has won us Owens Corning's top customer service ranking nationally for the last 8 years in a row. Something like that does not happen by accident. We are committed to insuring that all of our customers describe their experience with us as "the best contractor experience I ever had". If you are considering a basement finishing project please allow us to show you how Owens Corning has changed the industry with this unique system. A no-charge consultation and design is available. Give us a call today!

"Lux project manager and staff were great! Great attention to detail."

Brian C on December 2022

Lux Renovations, LLC, has been serving New England homeowners since 2002. We've finished over 8000 basements in New England, usually in 2-3 weeks. Our dedication to customer experience and satisfaction has won us Owens Corning's top customer service ranking nationally for the last 8 years in a row. Something like that does not happen by accident. We are committed to insuring that all of our customers describe their experience with us as "the best contractor experience I ever had". If you are considering a basement finishing project please allow us to show you how Owens Corning has changed the industry with this unique system. A no-charge consultation and design is available. Give us a call today!

"Lux project manager and staff were great! Great attention to detail."

Brian C on December 2022


Avatar for Pella Home Improvement

Pella Home Improvement

4.43(
29
)
Approved Pro

Pella Home Improvement

4.43(
29
)
Approved Pro
Customers say: Quality work
29 years of experience
Free onsite estimate

We are licensed as Home Improvement Contractors (H.I.C. # 0623182) with the Department of Consumer Protection and we are fully insured. Pella Home Improvement has been servicing Fairfield & Westchester County for over 15 years and can provide local references for all types of home repair and remodeling projects. We pride our positive reputation and always strive to provide the highest quality of craftsmanship, client satisfaction, and competitive pricing. No project is too small for our handyman service and no project is too big for our construction crew. May it be a remodeling project or regular maintenance, Pella Home Improvement is here for you. We keep your projects on schedule, stress free and enjoyable. From start to finish, Pella Home Improvement will impress you every step of the way. Contact us for your FREE ESTIMATE.

"Sic,really bad final"

Jan K on May 2025

We are licensed as Home Improvement Contractors (H.I.C. # 0623182) with the Department of Consumer Protection and we are fully insured. Pella Home Improvement has been servicing Fairfield & Westchester County for over 15 years and can provide local references for all types of home repair and remodeling projects. We pride our positive reputation and always strive to provide the highest quality of craftsmanship, client satisfaction, and competitive pricing. No project is too small for our handyman service and no project is too big for our construction crew. May it be a remodeling project or regular maintenance, Pella Home Improvement is here for you. We keep your projects on schedule, stress free and enjoyable. From start to finish, Pella Home Improvement will impress you every step of the way. Contact us for your FREE ESTIMATE.

"Sic,really bad final"

Jan K on May 2025


Henry Showah Construction, LLC

4.80(
13
)
Approved Pro

Henry Showah Construction, LLC

4.80(
13
)
Approved Pro
Customers say: Quick response
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
16 local quotes requested

Henry Showah Construction can skillfully design and remodel all types of projects. We take pride in our attention to detail. Please give us a call to set up an appointment.

"We contracted Henry as our GC to lead a 175K addition/renovation of our home. We added a master suite (w/ walk-in closet), another bedroom, a play/rec-room, and a workshop. We also took down the walls of an existing room to open up the common areas and built a hallway of pocket doors. We found him to be a great communicator. His subs were professional and courteous. Highly recommend him for others and would be happy to hire him again for future projects."

Peter D on January 2021

Henry Showah Construction can skillfully design and remodel all types of projects. We take pride in our attention to detail. Please give us a call to set up an appointment.

"We contracted Henry as our GC to lead a 175K addition/renovation of our home. We added a master suite (w/ walk-in closet), another bedroom, a play/rec-room, and a workshop. We also took down the walls of an existing room to open up the common areas and built a hallway of pocket doors. We found him to be a great communicator. His subs were professional and courteous. Highly recommend him for others and would be happy to hire him again for future projects."

Peter D on January 2021


WILLIAM R DEICKLER CONTRACTING, INC.

New on HomeAdvisorNew on HomeAdvisor
Approved Pro

WILLIAM R DEICKLER CONTRACTING, INC.

New on HomeAdvisorNew on HomeAdvisor
Approved Pro
42 years of experience
Free onsite estimate

We pride our company on reliability, great communication, integrity, and quality work. We strongly believe in giving our absolute best in all of our projects no matter how big or small. We are experts in our trade and will always keep you educated on your particular task or project. We look forward to earning your business!

We pride our company on reliability, great communication, integrity, and quality work. We strongly believe in giving our absolute best in all of our projects no matter how big or small. We are experts in our trade and will always keep you educated on your particular task or project. We look forward to earning your business!


Avatar for Everything Under The Roof LLC

Everything Under The Roof LLC

4.95(
37
)
Approved Pro

Everything Under The Roof LLC

4.95(
37
)
Approved Pro
Customers say: Quality work
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
20 years of experience

We pride ourselves on being a unique construction company. Everything Under the Roof is an interior, residential construction company owned by Kim and Jay Spanier. At work we are a husband and wife team, but at home we are mom and dad, so we truly understand the importance of keeping your project orderly and on time, while keeping your family (including your pets) safe. We can also guarantee NO high pressure sales calls, and no crabby, condescending construction guys working on your home improvement project – just our family helping yours! Kim is your main point of contact through the project. She walks you through the construction process, acts as your personal construction jargon translator, and, most importantly, she is the budget master. Kim will help you shop for materials so that you stay on budget. Jay is the jobsite superintendent. He manages the day to day activities of your remodeling/construction project, he coordinates and manages the sub-contractors, and it’s his skillful carpentry that will transform your home. All of our projects work within the existing footprint of your house. What exactly does that mean? Well, in a nut shell, we don’t do additions, and we won’t raise your roof. We find all the hidden, un-used spaces in your house and re-create your floor plan to work for you and your family.

"My wife and I needed to finish our basement to accommodate our growing kids. We had an excellent experience with Everything Under The Roof. They really listened to what we wanted to build and everything was done well, on-time, and on-budget. One thing I particularly appreciated is that the owner was onsite doing the work, and not simply sending a team of workers. We'll definitely be using Everything Under The Roof for any future projects. "

Thomas H on September 2025

We pride ourselves on being a unique construction company. Everything Under the Roof is an interior, residential construction company owned by Kim and Jay Spanier. At work we are a husband and wife team, but at home we are mom and dad, so we truly understand the importance of keeping your project orderly and on time, while keeping your family (including your pets) safe. We can also guarantee NO high pressure sales calls, and no crabby, condescending construction guys working on your home improvement project – just our family helping yours! Kim is your main point of contact through the project. She walks you through the construction process, acts as your personal construction jargon translator, and, most importantly, she is the budget master. Kim will help you shop for materials so that you stay on budget. Jay is the jobsite superintendent. He manages the day to day activities of your remodeling/construction project, he coordinates and manages the sub-contractors, and it’s his skillful carpentry that will transform your home. All of our projects work within the existing footprint of your house. What exactly does that mean? Well, in a nut shell, we don’t do additions, and we won’t raise your roof. We find all the hidden, un-used spaces in your house and re-create your floor plan to work for you and your family.

"My wife and I needed to finish our basement to accommodate our growing kids. We had an excellent experience with Everything Under The Roof. They really listened to what we wanted to build and everything was done well, on-time, and on-budget. One thing I particularly appreciated is that the owner was onsite doing the work, and not simply sending a team of workers. We'll definitely be using Everything Under The Roof for any future projects. "

Thomas H on September 2025


Avatar for Cecy Gillen Designs, LLC

Cecy Gillen Designs, LLC

4.92(
59
)
Approved Pro

Cecy Gillen Designs, LLC

4.92(
59
)
Approved Pro
Customers say: True professional
26 years of experience
Free onsite estimate

Interior Designer and General Contractor. A background in architecture, design, and art to help you find your style and discover the art and science of enhancing the interior of your home to achieve a healthier and more aesthetically pleasing environment. Nothing improves the value of your home more than professional updates. Cecy Gillen Designs, LLC, provides a wide range of services, from designing and 3D renderings to the actual construction and remodeling of your space. With over 30 years of experience, Cecy Gillen brings the quality and experience you can trust. The staff will work closely with you to ensure your goals are met. Remember you are our future reference - "If your project looks good, we look good."

"Cecy handled a full renovation of our new home, including three new bathrooms, a finished basement, a new office space, and a wide range of additional improvements. She brought strong ideas to the table and connected us with skilled professionals throughout the process. She collaborated smoothly with our architect and interior designer, which made the entire project run far more efficiently. Her crew was courteous, friendly, and consistently helpful. They kept the workspace clean and showed real attention to detail in everything they did. Cecy was responsive to any concern that came up, and when we hit roadblocks, she quickly found practical workarounds to keep things moving. I highly recommend her and look forward to working with her again on future projects."

Giovanni G on December 2025

Interior Designer and General Contractor. A background in architecture, design, and art to help you find your style and discover the art and science of enhancing the interior of your home to achieve a healthier and more aesthetically pleasing environment. Nothing improves the value of your home more than professional updates. Cecy Gillen Designs, LLC, provides a wide range of services, from designing and 3D renderings to the actual construction and remodeling of your space. With over 30 years of experience, Cecy Gillen brings the quality and experience you can trust. The staff will work closely with you to ensure your goals are met. Remember you are our future reference - "If your project looks good, we look good."

"Cecy handled a full renovation of our new home, including three new bathrooms, a finished basement, a new office space, and a wide range of additional improvements. She brought strong ideas to the table and connected us with skilled professionals throughout the process. She collaborated smoothly with our architect and interior designer, which made the entire project run far more efficiently. Her crew was courteous, friendly, and consistently helpful. They kept the workspace clean and showed real attention to detail in everything they did. Cecy was responsive to any concern that came up, and when we hit roadblocks, she quickly found practical workarounds to keep things moving. I highly recommend her and look forward to working with her again on future projects."

Giovanni G on December 2025


Western Connecticut Contractors, LLC

5.00(
5
)
Approved Pro

Western Connecticut Contractors, LLC

5.00(
5
)
Approved Pro
14 years of experience
Free onsite estimate

Western Connecticut Contractors, LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"Very professional! Great service. "

Sandra A on March 2025

Western Connecticut Contractors, LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

"Very professional! Great service. "

Sandra A on March 2025


Avatar for LVC LLC

LVC LLC

5.00(
4
)
Approved Pro

LVC LLC

5.00(
4
)
Approved Pro
10 years of experience
Free onsite estimate

We take pride in the quality of work and customer satisfaction that we give each and every customer! We are known to pay exquisite attention to detail while making customer satisfaction our top priority. Call us today to learn more about how we can help you!

"Tibor and his team renovated our living room and dining room to an open floor plan, our laundry room and both our bathrooms that were outdated. He was reliable quick and does quality work. He also has done exterior work on our home when we had to replace the entire half side of the houses siding on short notice due to a leak. I would highly recommend him for any project."

Laura A on June 2025

We take pride in the quality of work and customer satisfaction that we give each and every customer! We are known to pay exquisite attention to detail while making customer satisfaction our top priority. Call us today to learn more about how we can help you!

"Tibor and his team renovated our living room and dining room to an open floor plan, our laundry room and both our bathrooms that were outdated. He was reliable quick and does quality work. He also has done exterior work on our home when we had to replace the entire half side of the houses siding on short notice due to a leak. I would highly recommend him for any project."

Laura A on June 2025

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FAQs for basement remodeling projects in Newtown, CT

Finishing a basement turns unused square footage into livable space and returns up to 70% of what you spend when you sell your home. Beyond that resale boost, you gain a playroom, home office, or guest suite you can start enjoying right away. That mix of daily comfort and solid return on investment (ROI) makes basement finishing one of the smartest upgrades you can tackle.

In some parts of the country—especially lots on swamps, high water tables, or other wetlands—local codes prohibit basements. Saturated soil puts constant pressure on foundation walls and lets water seep in faster than any sump pump can handle. 

If your property sits on waterlogged ground, building on a slab or crawl space is often safer, more affordable, and code-compliant.

Most basements wrap up in four to eight weeks. Framing takes three to five days, with electrical and plumbing rough-ins following over the next week. Add five days for drywall, two to three for flooring, and another week for paint, trim, and punch-list items. 

Delays can happen if materials run late or your contractor’s calendar is packed, so build in a little cushion when you plan.

Whether a finished basement counts toward your home’s official square footage depends on local rules. Many areas only include below-grade space if it has code-approved egress, fully finished walls, ceilings, and floors, plus consistent heating. 

Check with your local assessor or building department before you start; meeting those standards can affect taxes, appraisals, and resale value.

Building codes require a checklist: dedicated heat and electrical service, a code-approved stairway, and at least one egress window or exterior door. Walls, ceilings, and floors must be fully finished and meet insulation, ventilation, and fire-separation standards. If you add a bedroom, you’ll also need a closet, proper clearances, and safe exits. If you change the layout later, be ready to update the space so every new room still meets today’s code.

The Newtown, CT homeowners’ guide to basement remodelings

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