Top-rated basement remodelers.

Get matched with top basement remodelers in Seneca, IL

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Find Basement remodelers in Seneca

Avatar for Mighty Basement & Bath
Mighty Basement & Bath
5.0(
25
)

Serving Seneca, IL and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Credit card accepted

"Mighty basement did a great job on my basement remodel. I had company coming in July and Scot Coleman made sure the remodel was completed by my target date. He was supervising the job and did a tremendous job. Scot was very professional but at the same time was attentive to what I wanted. He was great to work with. I would highly recommend Might Basements and bath."
TV and Entertainment
Main area
Entertainment
Fitness Room
Finished Space

+33

Response time9 hrs
1 neighbors recently requested a quote
Avatar for Lavalle Construction
Lavalle Construction
4.9(
37
)

Serving Seneca, IL and surrounding areas

Approved

In business since 2013

Free estimates

Credit card accepted

"Brian LaValle is a God Send!! Bought my home for under 20k and Brian has done everything from the basement to the roof!!! Drive by and Look at It. 705 Lundy St Streator. It sat for 5 1/2 years after a destructive foreclosure. There was no bathroom! Everyone Loves my bathroom now. The house looks Modern and heâ  s SO professional and comfortable and has been working on my home for well over a year so we pitched him keys to the house. I slept in the other day while him and his crew, always making sure my cats donâ  t get out, installed my laundry room floor. Never thought something like that could happen! Grade A work! Im So Proud of my house! This guy Checks My House to assure itâ  s sound and safe! The addition was attached to the original house. My roof was stressed and leaking. He â  tiedâ  (their lingo) the 2 lil houses together. Now Iâ  m saving up for him to do the roof. I flipped and remodeled 4 homes of my own when I was younger. This guy is the best. I humbly admit. Brian LaValle 815-674-8152"
Roof
Soffit and fascia damage
Soffit damage
Soffit damage
Fascia repair

+15

Response time1 day
Recommended by100%of homeowners
Avatar for A New Look Construction, LLC
A New Look Construction, LLC
5.0(
10
)

Serving Seneca, IL and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"Jason is the type of business owner you want to work with. He's trustworthy, knowledgeable, prompt and professional. You get what your money's worth!"
Response time1 day
Response rate89%
1 neighbors recently requested a quote
Avatar for Klock Home Services
Klock Home Services
New to Angi

Serving Seneca, IL and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

Hi, I’m Kevin with Klock Home Services, proudly serving the Fox Valley area. I provide reliable, detail-oriented handyman and home repair services at fair prices. From furniture and drywall repair to minor carpentry, fixture installs, and general maintenance, I treat every project like it’s in my own home. Whether it’s a small fix or a larger task, you can count on quality work done right the first time.

Christensen Carpentry
3.7(
3
)

Serving Seneca, IL and surrounding areas

Approved

In business since 2019

Free estimates

Credit card accepted

"They went above and beyond. They treated my house like it was theirs. They wouldnâ t just put my roof on but they checked to make sure it was ok to put the new shingles on. They were respectful of my premises. They got the work done and cleaned up all their messes. I would hire them again because they are very honest!"
Response time6 hrs
Recommended by66%of homeowners
Avatar for Homemade Design
Homemade Design
3.7(
322
)

Serving Seneca, IL and surrounding areas

In business since 2006

Credit card accepted

"Amanda was really very good!  At first I was very skeptical, thinking why did I pay money to just speak with someone on the phone about my kitchen remodel project... but after just a few minutes of her addressing some of the issues/questions I emailed to her earlier, I knew it was worth it.  It was very clear that she knew her business and she gave me several ideas that I had not even thought about.  I told her that I would definitely recommend her to friends and I will very likely use her again myself for my next home project!

"
Pennsylvania Master Bathroom
Boston Small Condo Kitchen
California Client Saves with HMD Designer Discounts
Recommended by54%of homeowners
Showing 1-10 of 49
FAQs for basement remodeling projects in Seneca, IL

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 Seneca, IL homeowners’ guide to basement remodelings

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