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Best basement waterproofing pros near Sandy, OR

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TRUSTED BY SANDY, OR HOMEOWNERS

  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon31
    Verified basement waterproofing services reviews

Top-Rated Basement waterproofing pros in Sandy - Updated Nov 2026

Avatar for Better Basements and Waterproofing
Better Basements and Waterproofing
5.0(
10
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Sandy, OR and surrounding areas

Approved

In business since 2022

Free estimates

Credit card accepted

"Dylan Milroy went in and cleaned out the crawlspace put down plastic and dug a french drain and redirected all the downspouts so that the rain and we had now more water being drained. He is super easy to work honest he follows up to see if you are satisfied with his work.. I recommend him to everyone."
12mil vapor barrier
12mil vapor barrier
Standard Vapor Barrier
Exterior Drainage
Exterior Drainage

+3

1 neighbors recently requested a quote
Recommended by50%of homeowners
Avatar for Groundworks
Groundworks
4.6(
915
)
Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Sandy, OR and surrounding areas

Approved (Corporate)

In business since 2021

Free estimates

Warranties offered

Groundworks is the North America's leading and fastest-growing foundation repair and water management solutions provider. Groundworks is a vertically integrated company with its own manufacturing operations and a world-class software solution, allowing us to serve our customers more effectively. From the first phone call to the annual maintenance offered, our customers have peace of mind knowing we're there with one mission to repair, protect and improve their home. For state licenses visit Groundworks.com/licensing

Basement
Basement
Basement
Concrete
Concrete

+20

8 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for John's Waterproofing Co.
John's Waterproofing Co.
4.2(
72
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Sandy, OR and surrounding areas

Approved (Corporate)

In business since 1974

Free estimates

Warranties offered

"David and Cody from John's Waterproofing went straight to work; they quickly found the problem, showed me the problem, discussed what would have to be done to fix the problem, fixed the problem, then thoroughly cleaned up. Very nice people to work with, from the schedulers through the technicians."
New Home Encapsulation
SilverGlo Insulation
CleanSpace
SaniDry Dehumidifier
Puddling in Basement

+7

Response time11 hrs
Response rate94%
28 neighbors recently requested a quote
Avatar for Crawlspace Masters, Inc.
Crawlspace Masters, Inc.
4.9(
94
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Sandy, OR and surrounding areas

Approved

In business since 2012

Free estimates

Emergency services offered

"Overall the Crawlspace Crew did some great work for our basement area. The initial phone call was very informative, then they came on-site for a walk-thru and provided an itemized estimate we could understand. We expressed that budget was a concern and only elected to do some of the work, they were supportive of this and we were scheduled in within a week. The work was completed in a timely and thorough manner and we are very satisfied. Shout out to Dillon, for working within our budget, and being flexible on the specifics, I would definitely recommend this company/service to a friend or anyone in need."
After
After
After
After
After

+221

Response time2 days
Response rate95%
41 neighbors recently requested a quote
Avatar for TerraFirma
TerraFirma
4.1(
100
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Sandy, OR and surrounding areas

Approved

In business since 2005

Free estimates

Warranties offered

"I was please with the estimator, Boston's knowledge and willingness to walk me through the process and unfamiliar territory of basement waterproofing. He was very knowledgeable and answers so many questions, at the time of the walk through as well as in the days after when I had questions after receiving other bids and trying to compare them. In the end, it was just my low budget that kept me from going with Terra Firma. I thought their system was excellent, and would have worked well with my basement, but I had to opt for a less expensive design."
A System Design Specialist helping a homeowner
Encapsulating a crawl space
Fleet of vehicles in our Portland, Oregon locatio
Loading up our truck for a piering job
Loading up a truck for a waterproofing job

+33

Response time10 mins
Response rate100%
117 neighbors recently requested a quote
Avatar for D & F Plumbing, Heating and Cooling
D & F Plumbing, Heating and Cooling
4.2(
514
)
Basement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Sandy, OR and surrounding areas

Approved (Corporate)

In business since 1927

Emergency services offered

Warranties offered

"Our shower was leaking into the basement. Azzi was able to come out the same day to diagnose the problem and schedule service. He was professional, friendly, tidy, and completed the substantial work in one day. He explained everything in terms we could understand. His work was excellent! We feel that we received quality and long-lasting solutions to our plumbing problems. We can't recommend D & F Plumbing enough. Ask for Azzi!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+18

1 neighbors recently requested a quote
Recommended by78%of homeowners
Avatar for Legacy Plumbing and Excavation, LLC
Legacy Plumbing and Excavation, LLC
4.5(
85
)
Basement Drainage Channels - Install

Serving Sandy, OR and surrounding areas

Approved

Super Service Award Winner

In business since 2023

Free estimates

Emergency services offered

"Well, it's fixed. A learning experience ? get many bids and make sure the company wants your business. Pros ? Technicians were polite and respectful of my home while I worked in meetings all day. ? The pooling water issue in the basement was resolved, and the floor is now dry; the work was ultimately completed. ? Initial estimate visit was free, but not thorough ? Senior staff came out later to apologize and review the work. Cons ? Pricing was far higher than industry norms based on later bids. ? Avoidable scope changes and price increases after work began; two other plumbers said the job could have been done as originally quoted. ? Communication issues (delayed quotes, unclear explanations, forgotten site details). ? Work quality/finishing didn?t match the premium price; two professionals asked if we had done the work ourselves. Added pictures because I don't know plumbing, so you decide if you'd want this. ? Extra fees add up: 10% financing fee (Synchrony) and 4% credit card fee."
Sewer Repair
Excavation & Sewer
Response time9 hrs
Response rate95%
879 neighbors recently requested a quote
Avatar for Guest & Son's Excavation and Land Management
Guest & Son's Excavation and Land Management
5.0(
6
)
Basement Drainage Channels - Install

Serving Sandy, OR and surrounding areas

Approved

In business since 2024

Free estimates

Emergency services offered

Hi, I'm Chase, owner of Guest & Son's Excavation and Land Management. We provide honest, reliable excavation services with quality workmanship, fair pricing, and clear communication from start to finish. Whether you need site preparation, grading, drainage, trenching, driveway work, land clearing, or other excavation services, we treat every property with care and every customer with respect. We offer free estimates and are committed to getting the job done right the first time.

Retaining Wall Footing Excavation
Aggregate Base Compaction
Footing Base Preparation
Creek Bank Stabilization
Farm Drain Tile Repair Completed

+22

11 neighbors recently requested a quote
Avatar for Wolcott Plumbing
Wolcott Plumbing
4.3(
12
)
Basement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Sandy, OR and surrounding areas

Approved

In business since 1985

Free estimates

Small jobs welcome

*CURRENT SPECIALS: TANKLESS WATER HEATER INSTALLATION STARTING AT $5999 & 40% OFF DRAIN CLEANING AND DRAIN REPAIR* \n\nFor over 40 years, Wolcott Services has been Portland’s trusted partner for plumbing and drain solutions. We understand how stressful it can be when something goes wrong with your home’s vital systems, which is why our licensed experts respond quickly, diagnose accurately, and deliver lasting repairs. From clogged drains and sewer backups to water heater installs and whole-home plumbing upgrades, we’re here to help you restore comfort, protect your home, and get life back to normal.

Project Photos
Sewer Replacement
Current Specials & Deals
Response time1 day
Response rate100%
2 neighbors recently requested a quote
Avatar for Roots Plumbing LLC
Roots Plumbing LLC
5.0(
2
)
Basement Drainage Channels - Install

Serving Sandy, OR and surrounding areas

Approved

In business since 2024

Warranties offered

Credit card accepted

Roots Plumbing LLC knows how important time is to you. Our experienced and professional team will get to the root of your plumbing issues with top quality service and products to save you time and money so you can get on with your day worry free.\n\nwww.rootsplumbingllc.com\n\nhttps://g.page/r/CcSNBQIWtQHgEBM/review

Water Heater Upgrade
Water Heater Upgrade
Water Heater Upgrade
Additional Photos
Additional Photos

+32

Recommended by50%of homeowners
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Basement Waterproofing FAQs, answered by experts

Yes, these services often increase home value by preventing moisture-related issues and enhancing the usable space in basements or crawlspaces.

Interlocking garage tiles made with PVC are the most effective for garages with past issues of humidity and flooding because damp concrete is not suitable for paint. Epoxy coating is also water-resistant and can prevent mold buildup. Finally, porcelain tiles are a wonderful option for wet conditions if your budget allows.

Encapsulation can take the place of crawl space vents since it protects the area from moisture and air all year round. Determining whether you should open or close crawl space vents can be complicated since it often depends on the weather and humidity. Skip this step by investing in crawl space encapsulation whenever possible.

The most flood-resistant materials you can count on in a flood scenario are concrete, closed-cell insulation, foam insulation (also known as expandable foam), pressure-treated wood, marine-grade plywood, and ceramic tile. When a material is flood-resistant, it can withstand direct contact with floodwater for at least 72 hours without being significantly damaged.

Yes, professional installers use weather-resistant materials to protect the dish and cabling from environmental damage.

The Sandy, OR homeowners’ guide to basement waterproofing services

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