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  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon165
    Verified basement remodels reviews

Top-Rated Basement remodelers in Radnor - Updated Nov 2026

Avatar for Quality 1st Basement Systems, Inc.
Quality 1st Basement Systems, Inc.
4.7(
113
)
Basement - Remodel

Serving Radnor, PA and surrounding areas

Approved

In business since 1999

Free estimates

Warranties offered

"my whole home feels fantastic. very courteous and knowledgeable individuals. I would hire them again for all my basement waterproofing and basement remodeling needs in the future. Its hard to find a family run business with amazing values and professionalism. these guys have it all."
Show Booth
Tough day
Found it in a crawlspace
What is it?
Found it in a crawlspace

+142

Response time1 day
Recommended by88%of homeowners
Avatar for Old Country Construction, Inc.
Old Country Construction, Inc.
4.8(
25
)
Basement - Remodel

Serving Radnor, PA and surrounding areas

Approved

In business since 2000

Free estimates

Customers say: Quick response

"Paulâ s and his team are great. OCC has beautifully finished my 1000 sqâ basement with new bathroom. They have installed sliding glass doors. Full gut and remodel of main bathroom. Drywall work and painting of living room, kitchen, bedroom, and hallway. Pricing is always on point, work is always quality, and materials recommendations are great. I have referred friends and family to OCC."
Decking
Decking
Decking
Decking
Decking

+156

Response time2 hrs
3 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Owens Corning Basement Finishing System
Owens Corning Basement Finishing System
4.5(
746
)
Basement - Remodel

Serving Radnor, PA and surrounding areas

Approved

Super Service Award Winner

In business since 1990

Free estimates

Warranties offered

"We love our basement remodel. Peter, Alex and his team were here when they said theyâ d be here, completed the job as described, and kept us updated along the way. The basement now looks and feels clean and bright. The additional space doesnâ t feel like a basement at all and is enjoyed by the whole family. We highly recommend Lux Renovations."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+40

Response time1 day
Response rate100%
221 neighbors recently requested a quote
Avatar for BMR BelMax Remodeling
BMR BelMax Remodeling
4.8(
67
)
Basement - Remodel

Serving Radnor, PA and surrounding areas

Approved

In business since 2018

Free estimates

Warranties offered

"Maksim and his guy are very professional. They did an excellent job at my basement project. Always on time, and meticulous in performing their work. Always answer my questions and concern. I can highly recommend BMR Belmax Remodelling."
Shower
Bathroom
Bathroom 2
Bathroom 3
Shower base

+48

Response time6 hrs
1 neighbors recently requested a quote
Recommended by74%of homeowners
Avatar for Nelson General Contractor LLC
Nelson General Contractor LLC
5.0(
13
)
Basement - Remodel

Serving Radnor, PA and surrounding areas

Approved

In business since 2017

Free estimates

Warranties offered

**Now Offers Financing** At Nelson General Contracting it is our mission to elevate architectural landscape through unparalleled craftsmanship. We are committed to delivering superior construction solutions, blending timeless design with cutting-edge efficiency. Our mission is to exceed client expectations, leaving a lasting legacy of quality, integrity, and excellence in every project we undertake. Contact us to discuss your next project today!

Remodeling - General Project
Remodeling - General Project
Remodeling - General Project
Had to build a more beefed structural wall.
Handymen Project

+21

5 neighbors recently requested a quote
Recommended by53%of homeowners
Avatar for Manfredia's Carpentry & General Contracting, LLC
Manfredia's Carpentry & General Contracting, LLC
4.7(
138
)
Basement - Remodel

Serving Radnor, PA and surrounding areas

Approved

Super Service Award Winner

In business since 1989

Free estimates

Warranties offered

"I originally hired Wally to replace two support beams that span a bilco opening on my 200+ year old stone house. The job was very delicate because temporary supports had to be installed before the original log beams could be removed. I had visions of my entire 3-story stone wall collapsing, but once I saw how meticulously his crew worked and the incredible results I knew that it had been done right. Once I realized Wally’s ability, I quickly hired him to do other repairs which included: -Replacing a beam in the basement -Thorosealing the stone foundation wall in the basement -Replacing two concrete pads on my sidewalk that were cracked -Fixing a 3’x3’ sink hole in my driveway -Pour a concrete pad for my Generac generator to sit on -Filling in an old vent hole and landscaping to ensure that the ground next to the house slopes away from the house When it comes to your home, there is little that Wally and his team can’t do. I give Manfredia's Carpentry my highest recommendation."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+24

Response time7 hrs
10 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for PG Tedesco Construction
PG Tedesco Construction
4.4(
91
)
Basement - Remodel

Serving Radnor, PA and surrounding areas

Approved

In business since 1986

Free estimates

Emergency services offered

"Paul was excellent to work with. We had to make many changes during our remodel. He was very accommodating and easy to work with. Our ADA remodel to convert a bedroom and bathroom making it wheelchair accessible turned out beautifully! We are very happy and would highly recommend His company ."
BEFORE
AFTER
House
House
House

+2

Response time2 hrs
Response rate100%
3 neighbors recently requested a quote
Avatar for MNB Renovations
MNB Renovations
5.0(
10
)
Basement - Remodel

Serving Radnor, PA and surrounding areas

Approved

In business since 2014

Free estimates

Warranties offered

"Matt and his team with MNB Renovations did a 32 x 24 addition that was basically a home build from the ground up. I am still surprised for the size of this project how stress free the process was. Matt was very detailed and checked in on everything to make sure we were getting what we wanted. In the end he asked us to make a list of anything that needed to be addressed and there was absolutely nothing to mention. They did a perfect job, the quality of the work is amazing, and the entire team was very nice, professional, and trustworthy! I absolutely recommend this company to others and will definitely use them again in the future!"
Kitchen Remodel
New stair case and great room
Oak staircase
Kitchen Remodel
Entry way

+181

Response time5 days
Response rate100%
3 neighbors recently requested a quote
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Basement Remodel FAQs, answered by experts

Making a window in a basement larger costs an average of $4,200. You’ll need to pay an average of $550 to have a structural engineer plan the project, $500 to $1,500 for the installation labor, and an average of $2,200 for the excavation and window well installation. The remainder will go toward pulling permits, installing trim, and repairing drywall on the interior.

Permits may be required for major repairs, structural work, or electrical and plumbing restoration after a flood. Check with your local building department to determine permit requirements and associated fees for your flooded basement cleanup project. Obtaining the correct permits helps ensure work is done safely and up to code.

Unless you have extensive experience in construction work, remodeling a basement is best left to a professional. There are several tasks associated with this project that require exact precision, including:

  • Replacing insulation 

  • Replacing carpet or other flooring 

  • Adding heating and cooling

  • Adjusting or adding walls and doors

  • Altering or adding plumbing elements

If any of these elements is done incorrectly, it could severely impact the quality of your basement remodel and be dangerous. Changing a basement often comes with code safety requirements, like egress windows and proper ventilation. Therefore, leaving it up to a professional is often the best decision.

Yes, you can install a summer kitchen or kitchenette in your basement. They serve similar purposes as outdoor kitchens, keeping the main floor of the house cool and providing another space to cook and congregate. Basement kitchens are also a worthwhile alternative for homeowners without much space in the backyard. They come with a few logistical questions to sort out, though, like ventilation and waterproofing.

The time it takes to finish or remodel a basement can vary significantly, ranging from a few weeks to several months or even up to a year. On average, the construction phase can take four to eight weeks, but the total project time can extend to three or four months when including planning and permits. The timeline depends on several factors, including the basement's size, design complexity, the scope of the work, and your contractor's availability. A more detailed breakdown for an average-sized basement might include: framing (3-5 days), electrical and rough-in plumbing (3-5 days), drywall installation (5 days), flooring (2-3 days), and final touches like painting and trim (about a week). If preliminary work like installing a waterproofing system or addressing structural issues is needed, the timeline could extend to six to twelve months. Factors like difficult access, material transport, and ventilation needs can also add to the project's duration.

The Radnor, PA homeowners’ guide to basement remodels

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