Top-rated excavation pros.

Get matched with top excavation pros in Cos Cob, CT

Enter your zip and get matched with up to 5 pros

Need a pro for your excavation project in Cos Cob, CT?

Select your specific project to find the pro for you.

TRUSTED BY COS COB, CT HOMEOWNERS

  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon28
    Verified excavation services reviews

Verified Reviews for Excavation pros in Cos Cob, CT

*The Angi rating for Excavation companies in Cos Cob, CT is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Excavation needs.

*The HomeAdvisor rating for Excavation companies in Cos Cob, CT is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Excavation needs.

Last update on May 04, 2026

Find Excavation pros in Cos Cob

Avatar for The Builders & Cleaners
The Builders & Cleaners
4.9(
119
)

Serving Cos Cob, CT and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"Best experience I ever had hiring some to do exterior & interior repairs!very pleased and highly recommended them to everyone I know !"
Dust out from the ductwork
Dust out from the ductwork
Clean vent
Clean vent
Dust in the return

+1801

Response time1 day
Response rate92%
Recommended by88%of homeowners
Request Quote
Avatar for Ron's Masonry
Ron's Masonry
5.0(
29
)

Serving Cos Cob, CT and surrounding areas

Approved

In business since 1995

Emergency services offered

Small jobs welcome

"Ron and his assistant arrived on time to do some fall cleanup landscaping at my house. What would have taken me three days to do, plus hauling away the debris, took them under two hours. It was the very best money I ever spent - more so because I got to meet such lovely people, but also because they helped me a great deal. I will be calling them in the spring for a clean up and masonry work."
Walkway
Steps
Footing
Walk
Walk

+36

Response time1 day
Response rate85%
41 neighbors recently requested a quote
Request Quote
KNL CONSTRUCTOR LLC
5.0(
11
)

Serving Cos Cob, CT and surrounding areas

Approved

In business since 2020

Free estimates

Credit card accepted

*****Call Today for an Estimate @ 475-279-4864***** With over 10 years of experience, I take pride in my quality craftsmanship. We are owner operated, and believe in building long-term relationships with our clients by delivering honesty along with exceptional work. We pride our company on reliability, great communication, integrity, and customer service. We are experts in our trade and will do our best to keep you as educated as we can on your particular project. Give us a call today! We look forward to working with you!

5 neighbors recently requested a quote
Recommended by66%of homeowners
Request Quote
Avatar for AA Outdoor Services, LLC
AA Outdoor Services, LLC
3.9(
33
)

Serving Cos Cob, CT and surrounding areas

Approved

In business since 1990

Free estimates

Small jobs welcome

"Vinny is a very friendly and professional guy who we really enjoyed working with. The quality of his work is excellent- we used him for our sidewalk and refurbishing the rod iron railings. Overall positive experience with him and the final project turned out great! We would definitely recommend him and will be using his services again in future projects."
Driveway in New Haven (West Haven)
Rear entrance and parking area (West Haven)
Rear entrance and parking area (West Haven)
Step repair (West Haven)
Step repair (West Haven)

+61

Response time9 hrs
Recommended by100%of homeowners
Request Quote
Avatar for Belinquete
Belinquete
5.0(
6
)

Serving Cos Cob, CT and surrounding areas

Approved

In business since 2020

Free estimates

Credit card accepted

"David and his crew were on time , professional, and affordable. The work was beautiful and they cleaned up beyond my expectations. I would definitely hire them again!"
Response time1 day
37 neighbors recently requested a quote
Recommended by50%of homeowners
Request Quote
Avatar for Elite Development Creations
Elite Development Creations
3.6(
36
)

Serving Cos Cob, CT and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"Victor was referred to us by friends and he did not disappoint. He was not the least expensive option to us but his track record speaks for itself. The planting?s and masonry his crew installed were beyond what we could have imagined. Loving my yard. Don?t hesitate to hire this company. Leo S"
Stone patio
Stone patio
Patio and turf
Excavation
Excavation

+27

118 neighbors recently requested a quote
Recommended by68%of homeowners
Request Quote
Avatar for Eden Farms LLC.
Eden Farms LLC.
4.7(
3
)

Serving Cos Cob, CT and surrounding areas

Approved

In business since 1994

Free estimates

Credit card accepted

"WE WERE LUCKY TO HAVE HER HELP WITH OUR FRONT YARD AND BACK KNOLL GARDENS ALONG WITH DIFFERENT ARRANGEMENTS FOR HOME AND POTS WITH A BEAUTIFUL DISPLAY. SHE WAS VERY HELPFUL."
Response time1 day
7 neighbors recently requested a quote
Recommended by100%of homeowners
Request Quote
...
Showing 1-10 of 145
Excavating questions, answered by experts

Drilled wells have a pipe sticking up that’s covered in a plastic or metal casing. On the other hand, a dug well will look like a big hole in the ground and is more similar to what you’d see in a fantasy or Western movie. If you want to be sure, contact the city for documentation on your property’s construction and excavation history. 

There are many ways to cut through roots when digging, especially if your trencher doesn’t seem to be removing the roots. First, use a shovel to expose the roots. Then, use gardening shears to clear out smaller roots or a reciprocating saw to remove larger plant roots. If you plan on keeping the plant, avoid cutting any roots over 2 inches thick.

It takes one hour to dig a 10-foot trench by hand. Use a trenching shovel with a sharp tip and a long head. Plan for more time if your soil is heavy or rocky. Consider renting a trencher if you’re digging a long or deep trench or if you have challenging soil or terrain. 

There is no standard depth for burying a septic tank; they are typically buried anywhere from 4 inches to 4 feet underground. The final depth depends on several factors, including the depth of your main sewer line, the height of the bedrock, soil type, local regulations, and the property's landscape. If you plan to grow grass or plants over the tank, a depth of at least 4 to 6 inches is recommended. Deeper tanks can be more difficult to locate, but a septic professional can help find it for you.

If you don’t have a crawl space but have a partial basement you want to make deeper, you can expect to spend a little less—between $40,000 and $90,000 on average. However, if you’re not adding new finished square footage, you won’t see much in the way of ROI.

The Cos Cob, CT homeowners’ guide to excavation services

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

See all articles