Mold behind brand-new drywall
Fiberglass and paper-faced drywall on a damp wall grow mold within a season. We take moisture readings first and use rigid foam, mold-resistant board and floors that tolerate water.
Basement services · Licensed & insured
Your basement, dry first, then finished the way you will use it.
Waterproofing, finishing a bare basement, redoing an old finished one, or turning it into an apartment for family. Each service below shows a typical price and timeline, and every one starts with a moisture check so the new space stays dry.
Send two photos of the basement and a supervisor tells you which service fits, within 5 minutes during business hours.
- 4Basement services
- $2k–$250kFull price span
- 4.9410 reviews
- 24hWritten estimate
Why basements go wrong
Most basement regrets come from finishing over a damp wall.
A basement can look finished and still fail: insulation that holds water against the concrete, a bedroom with no way out, or old work that never had a permit. We check each one before pricing.
A bedroom that cannot be listed
A basement bedroom without an egress window is not legal and will not count when you sell. We size and cut the window and well so the room passes inspection.
Paying for a system you did not need
Many wet basements are fixed with downspouts, grading or one sealed crack. We start with the smallest fix that works and only price a full drain system when the water keeps coming.
Basement services we build
Four basement services, each with its price and schedule.
Start with the one closest to what you have in mind. Each page shows the three price tiers, the materials by brand, the week-by-week plan and what we usually find in basements like yours.
Basement finishing
Bare concrete turned into living space: rec room, bedroom, bath or bar, framed and insulated to stay dry for good.
- Typical range
- $30k–$160k+
- Typical time
- 5 to 13 weeks
Basement remodeling
A basement finished long ago, redone: paneling, musty carpet and drop ceilings replaced, layout rethought, wiring brought to code.
- Typical range
- $15k–$120k+
- Typical time
- 3 to 11 weeks
Basement apartment conversion
A basement turned into a self-contained unit with kitchen, bath, egress and fire separation, permitted as a legal dwelling.
- Typical range
- $60k–$250k+
- Typical time
- 9 to 22 weeks
Basement waterproofing
Water in the basement stopped at the source: crack repair, interior drain and sump, or exterior membrane, diagnosed first.
- Typical range
- $2k–$45k+
- Typical time
- 1 day to 2 weeks
Not sure which one you need
Describe your basement today, and the right service follows.
The right basement service depends on what is down there now. Find the line that matches yours; the supervisor confirms it at the walkthrough.
Ask a supervisor which basement service fits| If your basement | Start with |
|---|---|
| Is bare concrete and you want a family room or guest suite | Basement finishing |
| Was finished years ago and now looks dated or smells musty | Basement remodeling |
| Should become a home for a parent, a grown child or a tenant | Basement apartment conversion |
| Takes water after storms or every spring | Basement waterproofing |
| Has a damp smell and you plan to finish it soon | Basement waterproofing |
Basement costs at a glance
What each basement service costs, side by side.
Typical totals for 700 to 1,000 square feet with mid-range finishes. Your written estimate lists the same lines, so any other basement quote can be compared with it.
| Service | Typical range | Typical time |
|---|---|---|
| Basement finishing | $30k–$160k+ | 5 to 13 weeks |
| Basement remodeling | $15k–$120k+ | 3 to 11 weeks |
| Basement apartment conversion | $60k–$250k+ | 9 to 22 weeks |
| Basement waterproofing | $2k–$45k+ | 1 day to 2 weeks |
Ranges include labor, materials, permits and disposal; after the walkthrough your written estimate replaces them with a fixed price for your basement.
Basements before and after
Two basements, one dried out and one turned into a home.
How a basement project runs
From the moisture test to the final inspection.
The same four steps for every basement service, whether we are sealing one crack or building a full apartment.
Step 01
Free assessment
On-site visit, scope review, honest repair-or-replace opinion. No pressure, no decision needed that day.
Step 02
Fixed-price plan
Itemized quote with Good, Better and Best options, a declared contingency and a dated schedule.
Step 03
Permits and prep
We pull permits, schedule inspections and send you a room-by-room prep checklist.
Step 04
Build and walkthrough
Daily updates, clean site every evening, final walkthrough and a written warranty in your hand.
Written into every contract
Six promises you can hold us to.
The approved price is the final price. Change orders only with your written approval.
A credit for every working day of delay we cause. Weather and inspections excepted, in writing.
Dust barriers, floor protection and a clean-up before we leave. Your home stays livable.
A text or email every working day with photos and tomorrow's plan, or the day is free.
Workmanship warranty in writing, transferable to the next owner, backed by a fixed address.
A small deposit, then you pay only for work that is already completed, inspected and photographed.
Other basement work we quote
Smaller basement jobs, priced inside the same estimate.
Egress windows, basement bathrooms, insulation, ceilings and flooring are done by the same basement crews and priced as lines in your estimate.
- Basement Bedroom Addition
- Basement Bathroom Construction
- Basement Kitchenette Construction
- Basement In-Law Suite
- Basement Home Theater
- Basement Home Gym
- Basement Home Office
- Basement Bar Installation
- Basement Egress Window Installation
- Basement Ceiling Installation
- Basement Flooring Installation
- Basement Wall Framing
- Basement Insulation
- Basement Lowering
- Basement Underpinning
- Crawl Space Conversion
- Crawl Space Encapsulation
Basement questions
What people ask before choosing a basement service.
What is the difference between basement finishing and basement remodeling?
Finishing turns a bare, never-finished basement into living space. Remodeling redoes a basement that was already finished, which adds tear-out and often fixes hidden moisture or old wiring. They cost about the same when a remodel goes back to the concrete.
Do I need to waterproof before finishing my basement?
Only if it has taken water or shows signs of moisture, such as white powder on the walls or a musty smell. We test with a moisture meter at the walkthrough. Dry basements go straight to finishing; damp ones get the smallest fix that works first.
Can a finished basement become an apartment later?
Yes, if it was built with that in mind. Egress windows, ceiling height, a fire-rated ceiling and a roughed-in kitchen drain make the later conversion simple. Adding them after finishing means opening walls and ceilings.
Which basement service adds the most value?
Finishing with a legal bedroom and a full bathroom usually adds the most usable, listable space for the money. Waterproofing adds little on paper but protects everything above it, and buyers' inspectors look for it.
How long do basement projects take?
Waterproofing takes one day to two weeks. Finishing takes five to thirteen weeks, remodeling three to eleven, and an apartment conversion nine to twenty-two, plus permit review for a new dwelling.
Is a basement apartment the same as an in-law suite?
Not quite. An in-law suite shares the house and usually has a kitchenette, so many towns treat it as part of your home. A legal apartment is a separate dwelling with a full kitchen, fire separation and a certificate of occupancy.
Basement crews near you
Your remodeling address, within our service area.
Basement crews work in your region, know the local soils, frost depth and permit rules, and build under your state's contractor license. License numbers are listed on our licenses page.
- Maine
- New Hampshire
- Massachusetts
- Rhode Island
- Connecticut
- New York
- New Jersey
- Pennsylvania
- Delaware
- Maryland
- Virginia
- North Carolina
- South Carolina
- Georgia
- Florida
- Check your remodeling address
Free basement estimate
Tell us what your basement is like today. We will price what it can become.
Choose the basement service and a supervisor texts back within 5 minutes during business hours to book a walkthrough with a moisture check.