Top-rated sump pump or interior foundation drains installers.

Get matched with top sump pump or interior foundation drains installers in Greenwich, CT

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Find Sump pump or interior foundation drains installers in Greenwich

Avatar for Budget Dry Waterproofing, Inc.
Budget Dry Waterproofing, Inc.
4.4(
240
)

Serving Greenwich, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2006

Free estimates

Emergency services offered

"Inspection of a previously installed sump pump system (primarily the sump pump). Inspection found that it seized up and wouldn't have functioned. Replacement made - and very fortunately - since when the pump is needed, it IS needed. It wouldn't have been good to have a flooded basement or have an upcoming flooded basement."
Drain at base of bilco
going up on the wall
finished wall area
completed
finished sump pump area

+37

136 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for Connecticut Basement Systems, Inc.
Connecticut Basement Systems, Inc.
4.3(
223
)

Serving Greenwich, CT and surrounding areas

Approved

In business since 1987

Free estimates

Warranties offered

"Connecticut Basement Systems prides themselves on their superior customer service, and they really live up to that. Their communication, quality of products and service, and attentiveness to customer needs is unsurpassed. Here are a couple of examples of how they go the extra mile for a satisfied customer: They installed their basement drainage system around my existing heating oil tank, but as I'm planning to convert away from oil this summer, they offered to come back AT NO EXTRA CHARGE once the tank is removed, to reroute the drainage system. Also, I was scheduled for a 3-day project, which included the replacement of some flooring in my basement. On the day the project began, we reconsidered the need for the flooring, and asked if we could cancel that portion of the job. They could not have been more accommodating to that adjustment, and made the change with no questions asked or negative attitude, even though it significantly lowered the price of the project and eliminated a whole day of scheduled work on 2-days' notice. That sort of total customer dedication is rare. I recommend them highly."
Finished basement in CT
Basement Finishing in CT
Basement Finishing in CT
Basement Finishing in CT
Basement Finishing in CT

+13

Response time9 hrs
130 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Aldos plumbing
Aldos plumbing
5.0(
34
)

Serving Greenwich, CT and surrounding areas

Approved

Free estimates

Emergency services offered

Small jobs welcome

"I texted him and he came out after 30 minutes. It was super quick and amazing. He showed me that it was just a silt underneath the pump and also showed me what to do for future problems. It was a quick job and he's our go to guy for a plumbing work."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+41

1 neighbors recently requested a quote
Recommended by45%of homeowners
Avatar for Sila Heating, Cooling and Plumbing
Sila Heating, Cooling and Plumbing
4.5(
895
)

Serving Greenwich, CT and surrounding areas

Approved (Corporate)

In business since 1989

Free estimates

Emergency services offered

"I was able to get a same-day appointment, and Abraham showed up right on time. He took a look at the system and confirmed that the furnace was running as expected, and he didn’t find evidence of a cracked heat exchanger. I was hoping for a definitive answer as to why the air wasn’t flowing out of several of my vents, but he was only able to confirm that it wasn’t due to the furnace itself. I may have clogged or separated ductwork behind the walls, but he wasn’t able to diagnose/confirm. At least I know the furnace itself isn’t the source."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+20

7 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Advanced Professional Management, LLC
Advanced Professional Management, LLC
4.2(
937
)

Serving Greenwich, CT and surrounding areas

Approved

In business since 1999

Emergency services offered

Warranties offered

"The sinks are draining well. The stopper is fixed. The toilet was unclogged, but got clogged again the next day. Had to pour Ajax, and let it sit overnight to unclog the toilet again. That is the reason I have given a B, rather than an A"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+33

11 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for Cassidy Plumbing and Heating, Inc
Cassidy Plumbing and Heating, Inc
4.6(
27
)

Serving Greenwich, CT and surrounding areas

Approved

Super Service Award Winner

In business since 1992

Emergency services offered

Warranties offered

"Oct. 6 2025 it went quick. I received an estimate of The job first. The work was done correctly. It didn't take long. If I need plumbing service again. I would contact Cassidy plumbing & Heating."
11 neighbors recently requested a quote
Recommended by84%of homeowners
Avatar for Atomic Rooter Inc
Atomic Rooter Inc
4.5(
126
)

Serving Greenwich, CT and surrounding areas

Approved

In business since 1977

Free estimates

Emergency services offered

"Steven was the absolute best… arrived at the very start of only a two hour window, fixed the problem in about an hour. Very polite and courteous. I called three plumbers and he was the first to call me back and the only one who would give me a ballpark figure over the phone. The others wanted to come out and have a look for $70. even though I accurately described the job in detail. I’m thrilled to have a reliable plumber! A more than satisfied customer, Lora Harrigan"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+6

Recommended by85%of homeowners
Avatar for L.C. Schede & Sons, Inc.
L.C. Schede & Sons, Inc.
4.0(
293
)

Serving Greenwich, CT and surrounding areas

Approved

In business since 1922

Free estimates

Emergency services offered

"I ended up hiring company after I shopped around for my Boiler, burner and Indirect hot water tank replacement need. I extensively researched prices and companies in my area. Lou the owner returned my call on a weekend in case there was any emergency. After he only asked to send him photos and videos. And instantly gave me quote for two scenarios (Which btw he honored all the way). This was stark difference from other companies who had to set an appointment to come measure my house with expensive equipment or software (Which size and BTU output I needed I already knew). And tried to upsell me something I didn't really ask for. Sched beat others on price which was most important to me in addition to reviews. After I picked them company clearly communicated when Job will start and were very punctual. David and Guy (I didn't catch name) where very punctual - cleaned after, daily. Clark and Enfi (I hope I spelled the name right) joined them the next day. Also very punctual and professional - all worked with minimally disturbing my day, as I had to work from home. And Job taking one extra day, they did it, leaving everything clean. Explained me and gave advice on maintenance and tune up. I'm not a professional in this area but what they installed looks good after years of watching my rusty boiler and Tank started leaking ;-). Pretty much rebuild everything with new pipes and motor pumps. I hands down will recommend company without any hesitation. Definitely shop around. But have no doubts Schede will do the Job as well if not better than others with great quality to price ratio."
 $100,000 Kitchen
Master Bath/Spa
Children's Bath
Guest Bath
9 neighbors recently requested a quote
Recommended by89%of homeowners
...
Showing 1-10 of 219
FAQs for sump pump or interior foundation drains installation projects in Greenwich, CT

Most residential pumps draw approximately 1,300 to 2,900 watts when they first start, then settle at roughly 800 to 1,050 watts during normal operation. The exact number depends on the motor’s horsepower and how often the float switch tells the pump to run. Even at the high end, the electricity cost is minor compared with the expense of cleaning up a flooded basement.

Grab a ruler and an empty 18‑inch‑wide pit. During a steady rain, time how much the water rises in one minute. Multiply that depth (in inches) by 60 to calculate gallons per hour, then add 50% for safety. If the result tops 2,100 gallons per hour—about 35 gallons a minute—you’ll need a 3/4‑horsepower unit. Anything lower, and a 1/3- or 1/2-horsepower pump should do the trick.

Loud rattling, constant cycling, or shuddering vibrations are the pump’s way of telling you it’s on its last legs. Musty smells, higher electric bills, and visible rust are other red flags. If the unit is 10 years old or older and exhibits any of these symptoms, replace it before the next heavy rain turns your basement into a wading pool.

You don’t have to hire a licensed plumber, but you should still bring in someone who installs sump pumps for a living—whether that’s a plumber, basement‑waterproofing specialist, or experienced handyman. They know the local codes, can wire the pump safely, and will test the system before they leave. Skipping professional help might void the warranty and could leave you with a pump that fails when you need it most.

Not every basement needs a pump, but if your home sits in a floodplain, has a high water table, or has ever taken on water during a storm, a sump pump is inexpensive insurance. For basements that only struggle with condensation or the occasional damp spot, sealing cracks and improving drainage may be all that is needed.

The Greenwich, CT homeowners’ guide to sump pump or interior foundation drains installations

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