Top-rated basement waterproofing pros.

Get matched with top basement waterproofing pros in Penngrove, CA

Enter your zip and get matched with up to 5 pros

Need a pro for your basement waterproofing project in Penngrove, CA?

Select your specific project to find the pro for you.

Verified Reviews for Basement Waterproofing pros in Penngrove, CA

*The Angi rating for Basement Waterproofing companies in Penngrove, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Basement Waterproofing needs.

*The HomeAdvisor rating for Basement Waterproofing companies in Penngrove, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Basement Waterproofing needs.

Last update on September 30, 2025

Find Basement waterproofing pros in Penngrove

Avatar for Groundworks
Groundworks
4.6(
19
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Penngrove, CA and surrounding areas

Approved (Corporate)

In business since 2023

Free estimates

Warranties offered

"Groundwork’s did a great job on our house. Luis G was an amazing Forman with Ken H and Mark P all waterproofed under our house. They worked quickly, efficiently and thoroughly left all areas in tact and clean. Luis communicated very clearly about the all aspects of the job until it was completed."
Basement
Basement
Basement
Basement
Foundation

+16

202 neighbors recently requested a quote
Recommended by58%of homeowners
Request Quote
Avatar for Sonoma Siteworks & Engineering
Sonoma Siteworks & Engineering
5.0(
4
)
Basement Drainage Channels - Install

Serving Penngrove, CA and surrounding areas

Approved

In business since 2012

Free estimates

Emergency services offered

"work was well organized, well executed and completed ahead of schedule by a friendly and knowledgable crew."
Additional Photos
Clearing and Grading
4 neighbors recently requested a quote
Recommended by100%of homeowners
Request Quote
Avatar for Peter Levi Plumbing, Heating, Cooling, Drains
Peter Levi Plumbing, Heating, Cooling, Drains
3.0(
13
)
Basement Drainage Channels - Install

Serving Penngrove, CA and surrounding areas

Approved (Corporate)

In business since 1990

Free estimates

Warranties offered

"He did a fantastic job he answered all my questions and told me if I have any questions that I could always call him.
"
11 neighbors recently requested a quote
Recommended by70%of homeowners
Request Quote
Demar, Inc.
5.0(
1
)
Basement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Penngrove, CA and surrounding areas

Approved

In business since 2000

Free estimates

Offers commercial services

Demar Inc. proudly serves its customers with pride, integrity, and attention to the details that matter most to you. This is one of the many things, that set us apart from the rest. We are locally owned and operated. Give us a call today!

4 neighbors recently requested a quote
Recommended by100%of homeowners
Request Quote
RSF Construction Inc.
1.0(
1
)
Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Penngrove, CA and surrounding areas

Approved

In business since 2019

Free estimates

Credit card accepted

RSF Construction Inc. is a leader in providing our customers with the highest quality service in an honest, efficient, and professional way. Our pledge is to create successful relationships with our customers, employees and community by building trust, treating every project with the utmost integrity and exceeding expectations. We look forward to working with you!

Request Quote
Avatar for Same Day Plumbing, Heating, Cooling
Same Day Plumbing, Heating, Cooling
New to Angi
Basement Drainage Channels - Install

Serving Penngrove, CA and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

Family-owned Same Day Heating, Cooling, Plumbing operates out of Windsor, just north of Santa Rosa. We offer fast, reliable AC repair and installation services, heater repair & installation, and plumbing services, in the North Bay area of California. Our promise to you is always that if we do not fix your system the SAME DAY we arrive… you DON’T pay the service fee. Our home service experts are licensed and insured with more than 100 years of leadership experience. Additionally, we back all of our installation and replacement services with a 24-month, 100% satisfaction guarantee.

Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+8

74 neighbors recently requested a quote
Request Quote
Showing 1-10 of 45
Basement Waterproofing questions, answered by experts

Living in a finished basement is acceptable, but only if the space has the proper points of egress and includes smoke and carbon monoxide (CO) detectors to ensure the safety of the occupants. A good way to ensure your finished basement is suitable for use as living space is to get the basement finishing project properly permitted.

Water leakage through window openings is much more common in older homes, but it can also create issues with window frames that are improperly installed. If left unattended, water buildup can cause damage to surrounding fixtures, lead to harmful mold, and compromise the architectural integrity of your home. The potential damage that a water leak poses makes investing in weather- and water-proofing your window frames entirely worthwhile.

Yes, it is possible to over-dehumidify a house by removing too much moisture from the air. This can create an overly dry environment that negatively affects those with respiratory or skin issues, and may cause your skin, hair, and sinuses to feel dry. However, this is unlikely to happen with most modern dehumidifiers, as they are equipped with moisture sensors and adjustable settings. These features allow the unit to pause automatically when the desired humidity level is reached, preventing the air from becoming uncomfortably dry. In contrast, older or more basic dehumidifiers left running for too long could potentially over-dry the air. To avoid this, aim for a balance between removing excess moisture and maintaining a comfortable environment. You can often monitor your home's humidity levels using a modern thermostat for guidance.

Basements are commonly converted into game rooms. The potential challenges you may run into include controlling moisture, working with low ceilings, limited natural light, and the need for additional electrical or HVAC work. Addressing these issues can add to the total cost, but it ensures a comfortable and functional space.

No, your basement dehumidifier doesn’t need to be on 24/7. While it’s an excellent tool for tackling damp, musty air, especially in humid seasons, leaving it running nonstop can backfire. Over-drying the space can mess with your sinuses, warp wood, and even crack certain materials. Instead, only use your humidifier when moisture levels rise above 50%, and then give it a break when the humidity levels drop.

The Penngrove, CA homeowners’ guide to basement waterproofing services

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

See all articles