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

Avatar for Groundworks
Groundworks
4.6(
26
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Porter, ME and surrounding areas

Approved (Corporate)

In business since 1996

Free estimates

Warranties offered

"Just finished a visit with Foreman Doug and his crew, Devin, Sean, and Mason. Waterproofing the basement and super sound and solid work! Doug was professional and very good at keeping me in the loop with the project over the 3 day visit, and created a solid system that we are confident will keep water out of the basement forever. Above and beyond as well with problem solving when having to find solutions to fit our basement layout, all with a solid financing option/great price and 5 year warranty/ yearly inspection plan. If you are stuck with water in your basement, get Groundworks working for you ASAP!"
Foundation
Foundation
Foundation
Basement
Basement

+16

Response time12 hrs
173 neighbors recently requested a quote
Recommended by56%of homeowners
Avatar for Morton Excavation
Morton Excavation
4.9(
14
)
Basement Drainage Channels - Install

Serving Porter, ME and surrounding areas

Approved

In business since 2016

Free estimates

Small jobs welcome

With 15 years of experience Morton Excavation provides exceptional service to the surrounding areas. Always taking pride in all of our services. Whatever your home improvement needs may be, you can count on our company to leave you satisfied and happy. Our customer satisfaction is our top priority. We will earn your trust for a lifetime. We believe in making all clients repeat clients. Our staff listens to your needs regarding your home improvement project. \n \nCall us today you'll be relieved you did. \n \nSenior Citizen and Military Veteran Discounts Available - Inquire Within \n \nDeposits May Be Required - Inquire Within \n \nAccepts Cash, Check, Venmo and PayPal

Gallery
Fire Hydrant install
8in ductile iron / fire hydrant install
Culvert Drainage
Culvert Drainage

+11

7 neighbors recently requested a quote
Recommended by58%of homeowners
Avatar for swb plumbing/hvac
swb plumbing/hvac
5.0(
15
)
Basement Drainage Channels - Install

Serving Porter, ME and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

"So I live in a older house (1947) so the plumbing is older too. Anytime I used my sink dishwasher or laundry the water would all but flood my basement making it almost unusable. I called and talked to Seth he was able to get to my home the next day and diagnose the problem my pipes in the concrete were old and clogged beyond repair well he managed to completely redo all of my plumbing brand new and have it up and running in a matter of a few hours! I now have a dry usable basement. He gave me a very decent price as well! Now hopefully I don't need another plumber anytime soon but if I do I'm calling seth at SWB!"
New condensate line property piped into existing house sewer to code
1 1/2” water mains
3 zone heat pump install
Install condensate pump and neutralizer to bring existing boiler upto code.
1 1/2” water mains insulated after we installed them.

+10

Response time1 day
Response rate100%
31 neighbors recently requested a quote
Avatar for Four Seasons Masonry And ChimneyConstruction
Four Seasons Masonry And ChimneyConstruction
New to Angi
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Porter, ME and surrounding areas

Approved

In business since 1969

Free estimates

Emergency services offered

Four Seasons Masonry & Chimney Construction \n \nBuilt tough. Built right. Built to last. \n \nYour home doesn?t need a quick fix?it needs work that can take a beating. At Four Seasons Masonry & Chimney Construction, we bring serious craftsmanship to the jobs that matter, from crumbling chimneys and cracked foundations to masonry, concrete, waterproofing, roofing, siding, and structural repairs. \n \nWe work with brick, stone, block, and concrete to restore what?s damaged, reinforce what?s failing, and build what?s missing. No cover-ups. No shortcuts. Just solid construction designed to stand up to New England weather and the test of time. \n \nWhether your chimney is showing its age, your foundation needs attention, or your property needs a complete masonry overhaul, our crew comes prepared to diagnose the problem and get the job done right. \n \nOld brick. New construction. Big repairs. Small repairs. We build it. We fix it. We make it last. \n \nFour Seasons Masonry & Chimney Construction ? Tough work. Clean results. Built for every season.

Chimney repairs
Chimney repairs
Chimney repairs
Chimney repairs
Chimney repairs

+3

Avatar for octagon-restoration
octagon-restoration
4.7(
96
)
Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Porter, ME and surrounding areas

In business since 2002

Free estimates

Emergency services offered

"I highly recommend Octagon Cleaning and Restoration. We recently purchased a house on the water and discovered that we had a mold issue in our basement. Matt and his crew were professional, informed us what needed to be done and completely eliminated the mold and the musty smell. Matt was very responsive to my texts, answered all my questions and a great representative of Octagon."
Water extraction.
Octagon vehicles
Drying structure damaged by water.
MOLD REMEDIATION
Dirty air duct.

+2

Response time6 hrs
Response rate100%
Recommended by90%of homeowners
DryLock Systems of New England
4.2(
9
)
Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Porter, ME and surrounding areas

In business since 1986

Free estimates

Emergency services offered

"Though Rob was extremely courteous and prompt, he quickly diagnosed that we would need to drill into the basement floor to create a sump basin to prevent further flooding, at a total cost of about $4500.00. Wanting a second opinion, I called my plumber. Within seconds of walking into our basement, he found that we already HAD a sump basin, and that an old house trap was clogged and causing backup to the basin. For $1000.00, the plumber removed the house trap and ran the line directly to the sewer, cleaned the sump basin, and we have not had an issue since. In the end, we saved thousands of dollars and a lot of unnecessary drilling which would not have fixed the issue. I do not think that Rob was being deceitful in any way, but I was disturbed that he did not find the existing basin which was under a large, loose tile in the utility room where we stood discussing the issue for 30 minutes. In my desperation to fix the problem, I very nearly did not get a second opinion; boy, am I glad I did!
"
Recommended by100%of homeowners
CZ Plumbing LLC
4.4(
117
)
Basement Drainage Channels - Install

Serving Porter, ME and surrounding areas

In business since 1971

Free estimates

Emergency services offered

"The water pump failed. lI called my regular plumber and he did not respond at all.  I called CZ and told him there was no water in the house.  He said he would finish up the job he was working on and come over in about an hour.  They came as promised and determined that a new pump was needed.   They went off in search of a pump. they came back and installed the new pump.  It was 6:45 PM by the time they were done.  I appreciated that they stayed and finished the job. Later that evening the pump was running non stop so we turned it off. I called him at 7AM the next morning.  He said they would be over around 10  They showed up before 10 and fixed the problem.  While they were in the basement, they found a leaking drain pipe.  they fixed that.  There was no charge for the second visit  They were very pleasant
 professional and willing to answer questions.  I will use the the next time I need a plumber.
"
Recommended by94%of homeowners
Avatar for Marshall Home Pros
Marshall Home Pros
3.8(
130
)
Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Porter, ME and surrounding areas

In business since 2000

Free estimates

Emergency services offered

"Perfect from start to finish. Devin walked through the basement with me and we worked out what needed to be done and the best way to accomplish it with the least  expense and disruption.
They showed up on time, worked without let up until the job was done, came back the next day to load the dumpster (I had a minor glitch with the delivery so it was a day late.) Devin was flexible about adding a small job at the end, and the place was cleaned up better than when they began.
I just wish I had more work for him to do around here."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+32

Recommended by72%of homeowners
Avatar for Northeast Home Inspections
Northeast Home Inspections
4.8(
6
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Porter, ME and surrounding areas

In business since 2019

Free estimates

Credit card accepted

"I hired him for a home inspection, a radon air test, and a septic inspection. He arrived within 10 min of appointment time. His home inspection was very thorough and a comprehensive report provided in a timely manner. His radon air test was completed in the basement, rather than the lowest living area (stated that there was a laundry hookup in the basement so it had to do down there, despite a full laundry room on the second floor)"
Attic
Attic Access
Septic
Septic
Septic

+15

Response time4 hrs
Recommended by100%of homeowners
Showing 1-10 of 24
Basement Waterproofing FAQs, answered by experts

If you set up a dehumidifier, it will usually dry out your wet crawl space within 12 to 24 hours. Once the space is dry, it’s a good idea to take preventative measures to keep it dry. These include installing a French drain or other exterior foundation drainage system, installing a sump pump in the crawl space, and installing a vapor barrier in addition to leaving the dehumidifier running.

A vapor barrier can last over 20 years, but they are vulnerable to pests, flooding, and other natural disasters. If your home weathers a storm or is treated for any pest infestation, make sure to have a drywall pro come check the integrity of your vapor barrier. It’s also important to have a pro install a vapor barrier since improper installation can lead to tears or leaks in the barrier that shorten its lifespan.

It is better to have a crawl space that is tailored to the outside temperature, your needs, and the season. For example, it is much better to have a vented space when it’s very hot outside and your AC bills are sky-high. Conversely, when the temperature drops and humidity rises, it is almost always better to have your vents shut and covered if possible.

Thankfully, you do have a few sump pump backup options in case it fails. One option is a battery-powered backup sump pump. Another option is using a portable backup generator as a power supply for your sump pump. Unlike a battery-powered backup which has limited power, a generator can run around the clock for as long as you need it. 

Or you can opt for a water-powered backup pump, which uses your home’s water supply as a source of power. However, this may not be the best option if you find your house frequently has low water pressure.

The cost of basement waterproofing is $4,950 for the average homeowner. However, you could end up paying between $600 and $14,000, depending on factors like basement size, waterproofing method, and the region you live in. 

If you live in an area with heavy rainfall, you might be paying more for waterproofing than if you lived somewhere drier since waterproofing contractors would be in high demand. Likewise, a 500-foot basement costs between $2,500 and $5,000 to waterproof, but that price rises significantly for a larger basement.

The Porter, ME homeowners’ guide to basement waterproofing services

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