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Best basement remodelers near Alstead, NH

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Top-Rated Basement remodelers in Alstead - Updated Nov 2026

Avatar for Owens Corning Basement Finishing System
Owens Corning Basement Finishing System
4.5(
533
)
Basement - Remodel

Serving Alstead, NH and surrounding areas

Approved

Super Service Award Winner

In business since 1990

Free estimates

Warranties offered

"I couldn’t be happier with the work Owens Corning Basement did remodeling my basement! From start to finish, they were professional, courteous, and attentive to every detail. The team completed the project on time and within budget, keeping me informed throughout the process. The finished basement looks amazing—bright, functional, and exactly what I envisioned. I highly recommend Owen Corning Basement to anyone looking for high-quality remodeling work!"
Media Room Before
Media Room After
Games Room Before
Games Room After
Living Room Before

+128

Response time11 hrs
74 neighbors recently requested a quote
Recommended by69%of homeowners
Avatar for Pro Services
Pro Services
4.8(
150
)
Basement - Remodel

Serving Alstead, NH and surrounding areas

Approved

Super Service Award Winner

In business since 2002

Free estimates

Emergency services offered

"Repair went well. Technician arrived on time and was working all day to re point the chimney and re line it. He even repainted where paint had flaked off accessing the chimney to re-line."
Chimney Cap Installation
Smoke chamber before
Chimney Sweep Project
Fireplaces Project
Chimney Sweep Project

+36

Response time4 days
Response rate100%
42 neighbors recently requested a quote
Avatar for On Task Construction LLC
On Task Construction LLC
5.0(
9
)
Basement - Remodel

Serving Alstead, NH and surrounding areas

Approved

In business since 2022

Free estimates

Credit card accepted

We are 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. \n \nTrip charge $100 will be taken off the contracted amount once agreement is signed.

Spray foam
Spray foam
Spray foam
Deck build
Deck build

+4

3 neighbors recently requested a quote
Recommended by33%of homeowners
Avatar for The Handyman Company
The Handyman Company
4.9(
11
)
Basement - Remodel

Serving Alstead, NH and surrounding areas

Approved

In business since 1999

Free estimates

Credit card accepted

"Steve and his guys worked very hard to solve my drainage issue and they got the job done in a day. I will be calling on them in the spring to install drainage around my house. I highly recommend this company!!"
Tear out and clean up debris
Taking out old cabinets
Tile installation
sheetrock/tile
Custom Cabinets

+68

Response time1 day
Recommended by100%of homeowners
Calvary Custom Builders, LLC
4.3(
7
)
Basement - Remodel

Serving Alstead, NH and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

Calvary Custom Builders, LLC is proud to be a locally owned and operated company that serves Windham and Bennington Counties and the surrounding communities. From custom home building to remodels we will bring our years of experience to your project. We have built our business on providing 1st class craftsmanship at a fair price. Each project is unique so we will work with you on finding out what you are wanting to accomplish and making that dream become a reality. \n\nOur reputation has been built on being timely, tidy and making sure that every customer is 100% satisfied when we are done with the job. Let us show you why we are #1 in the area. Get in touch to discuss your project today!

Master Bathroom
Master Bathroom
Master Bathroom
Master Bedroom
Whole Home Remodel

+103

Response time5 days
Recommended by100%of homeowners
Avatar for Greater Northeastern Construction
Greater Northeastern Construction
5.0(
3
)
Basement - Remodel

Serving Alstead, NH and surrounding areas

Approved

In business since 1979

Credit card accepted

Offers commercial services

Greater Northeastern Construction is a locally owned and operated company that values honesty and integrity in all aspects of our business. Our dedicated team of professionals have over 35 years of hands on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!

My jobs
My jobs
My jobs
1 neighbors recently requested a quote
Recommended by100%of homeowners
Sonart Construction Corp.
2.3(
7
)
Basement - Remodel

Serving Alstead, NH and surrounding areas

Approved

In business since 2013

Free estimates

Credit card accepted

Sonart Construction Corp. has over15 years of experience in providing a variety of exterior and interior renovation services. We provide services to Palm Beach, Broward and Miami-Dade Counties.. We specialize in Bathroom Remodeling, Kitchen Remodeling, Flooring and the list goes on. Customer satisfaction is what determines our success, which is why we take a hands-on approach and keep the customer informed through every phase of the project. When interacting with our company, you'll notice that we're particularly focused on the principles of quality workmanship, timely completion, competitive pricing, and integrity in all our business dealings. We combine knowledge and research with our extensive practical experience to ensure a specialized approach for your renovation needs. Give us a call today!

Avatar for Reconstruct Realty LLC
Reconstruct Realty LLC
New to Angi
Basement - Remodel

Serving Alstead, NH and surrounding areas

Approved

In business since 2019

Free estimates

Warranties offered

Reconstruct Realty 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.

Response time7 hrs
Response rate100%
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Basement Remodel FAQs, answered by experts

Roughing in and connecting utilities are the hardest parts of finishing a basement, and they’re the parts we typically don’t recommend doing as a DIY project. Unfortunately, your finishing timeline can be extended by weeks while you wait for contractors and inspectors to install electrical wiring, plumbing lines, and heating/cooling equipment and carry out inspections.

Framing a basement takes three to five days, on average, when completed by a professional, though it may take longer for a larger space. Keep in mind this doesn’t include the time to complete the design, obtain permits, and install the drywall on the framing. On average, fully finishing a basement takes an average of 45 days.

Lifting a house and adding a basement is one way to add usable square footage. Lifting or jacking a house is a complex process, and it can be expensive, not to mention that you won’t be able to live in your house while it’s lifted, due to safety concerns. Lifting a house should only be done by experienced professionals.

Rebar is an essential part of reinforcing a basement floor, as not having it can impact its structural integrity. It helps absorb the tension factors that contribute to cracks in your floor and strengthens its load-bearing capabilities by evenly distributing the weight. Not including rebar could lead to an unstable floor, so don’t skip it!

When considering finishing your basement, take into account a few pros and cons:

Pros

  • Can increase the value of your home

  • Separate space from the rest of the house 

  • Customize and personalize the basement to suit your needs and style

  • Increase the amount of living space in your home

Cons

  • May not regain enough value to cover the cost of finishing

  • Lack of natural light if it’s below ground level

  • Moisture or flooding can cause costly damage

  • Installing plumbing and electrical can be messy and costly

The Alstead, NH homeowners’ guide to basement remodels

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