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Top-Rated Basement remodelers in Rainier - Updated Nov 2026

Avatar for D & D Construction, LLC
D & D Construction, LLC
5.0(
22
)
Basement - Remodel

Serving Rainier, OR and surrounding areas

Approved

In business since 2018

Free estimates

Credit card accepted

"David does quality work, communicates well, and keeps to schedule and budget. Reliable, conscientious and a nice guy too. I highly recommend his work; the remodels on my 2 bathrooms couldn't have been smoother. I am ecstatic with the finished product, my bathrooms are wonderful."
Kitchen
Bath
bathroom
bathroom
Bathroom

+90

Response time10 hrs
Response rate85%
1 neighbors recently requested a quote
Avatar for North Creek Construction, LLC
North Creek Construction, LLC
5.0(
44
)
Basement - Remodel

Serving Rainier, OR and surrounding areas

Approved

Super Service Award Winner

In business since 2022

Free estimates

Emergency services offered

"DAVE IS A TAKE CHARGE GUY AND IF YOU ARE A NOVICE AT CONSTRUCTION JOBS HE WILL PITCH IN AND HELP YOU THROUGH THE ROUGH SPOTS. I HIGHLY RECOMMEND HIM FOR ANY JOB YOU NEED DONE."
Large wall
Large wall
Retaining Wall
Large wall
Wall Stairs

+13

Response time1 day
Response rate94%
3 neighbors recently requested a quote
Avatar for Elm Construction Services, Inc.
Elm Construction Services, Inc.
4.3(
34
)
Basement - Remodel

Serving Rainier, OR and surrounding areas

Approved

In business since 2015

Free estimates

Emergency services offered

"I just had Elm Construction Services replace the roof on our new home. I have to say, I’m really impressed. We went with asphalt shingles and they look beautiful! What I loved most was how professional everyone was. The crew showed up on time, worked efficiently, and actually cleaned up better than I expected - you’d never know they were even here. They were also super patient with all my questions (and I had a lot!). The quality of their work is top-notch. You can tell they really care about doing things right, not just getting it done quickly. My neighbors have even commented on how great the roof looks. If you’re in the Lake Oswego or Portland area and need roofing work done, I’d definitely recommend giving Elm Construction Services a call. It’s such a relief to find a contractor you can trust who actually delivers on their promises!"
GAF Roof Installation
GAF Roof Installation
GAF Roof Installation
GAF Roof Installation
GAF Roof Installation

+27

Response time5 hrs
Response rate99%
702 neighbors recently requested a quote
Express Restoration LLC
3.5(
2
)
Basement - Remodel

Serving Rainier, OR and surrounding areas

Approved

In business since 2010

Free estimates

Emergency services offered

We offer all sorts of flooring installation, we install hardwood, laminate flooring, vinyl flooring, carpet, tile everything and also formica counter tops. Express Flooring LLC is insured and bonded. \n\nWe have been in business for 4 years as Express Flooring LLC, but our installers have over 20 years of experience all together. We stand behind our name as express flooring, we do the job fast, with quality. \nNot only do we offer installation, as well as all sorts of hardwood products, vinyl, laminate and formica products. We also install the product you provide. If you are doing a remodel, our team can help with making it easier by doing the demolition and installing your flooring, and countertop needs. \n\nWe are also a general contractor, and are qualified to do residential remodeling. From start to finish, we will take care of every need you have. With quality, and express service, our crew will be in and out in no time!\n\nOur prices on all types of installations are competitive, and we work with your budget. We are an honest and reliable company that has grown fast in the last 4 years. \nWe are well recognized in the Seattle area by Polygon Homes, Macadam Floor & Design, and other builders around the puget sound.\nWe are fairly new to the PDX, but bring a lot of experience from a bigger growing city (Seattle).\n\nWe look forward to completing your flooring needs, as well as helping you with all your remodeling needs!

Hardwood Stairs
LVT Flooring
Vinyl Flooring
3 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for The Renovation Company
The Renovation Company
4.5(
73
)
Basement - Remodel

Serving Rainier, OR and surrounding areas

In business since 2011

Free estimates

Credit card accepted

"We hired Fine Finish for our kitchen remodel and addition, and they did an awesome job.  Our project manager, Aaron was
great, and Mark and his wife kept us up to date with job progress.
We got a project plan up front that told us when we needed to make material decisions to keep the project on track and the project was completed on time and on budget. The new addition blends in perfectly with our craftsman style home which is one of our key requirements in selecting a contractor. 
If you are looking for a remodeling contractor that goes the extra mile on communication, responsiveness and does the job at a competitive price, this is it.

"
Recommended by89%of homeowners
Avatar for Portland Construction LLC
Portland Construction LLC
5.0(
61
)
Basement - Remodel

Serving Rainier, OR and surrounding areas

In business since 2018

Free estimates

Emergency services offered

"We had a very good experience working with Chuy and his crew. He was very fast to get us an initial estimate and was then very quick to begin the work. He was also very flexible in working around complicated timelines that we had and the electrical work that we needed completed in between the framing and the drywall work. Overall, they did a great job and our basement looks 100 times better than before."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+38

Recommended by98%of homeowners
Avatar for SL Green Homes, LLC
SL Green Homes, LLC
4.5(
68
)
Basement - Remodel

Serving Rainier, OR and surrounding areas

In business since 2007

Free estimates

Emergency services offered

"

The consultation (my husband was there to meet with the estimator) went well and the estimate reflected what was discussed. It ended up being more expensive than our budget will allow at this time so we haven't yet scheduled the work but it is really helpful to know what to plan for/expect and can adjust from there if necessary.

One minor point: Based on the graphic that is shown on the deal itself (which includes a blueprint) I had expected to receive some sort of visual representation of the remodeled bathroom with the estimate. It isn't really clear in the language that it was supposed to be provided so we didn't consider it to be a negative, but wanted to include it here in case others had the same expectation.


"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+38

Recommended by94%of homeowners
Ethereal Elements
4.5(
85
)
Basement - Remodel

Serving Rainier, OR and surrounding areas

In business since 1993

Free estimates

Emergency services offered

"Company is very knowledgeable (the how to's and materials to be used)about all they inspected including state/county laws governing these systems ie. what excavators are to do to insure dry foundations and basements.  This company has general contractor experience and background education for general contracting so several areas get checked very thoroughly.
"
Front Entry
Additional Photos
Front of Garage
After Framing Repair
Siding Installation

+2

Recommended by92%of homeowners
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FAQs for basement remodeling projects in Rainier, OR

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 Rainier, OR homeowners’ guide to basement remodelings

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