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  • Verified reviews icon34
    Verified excavation services reviews

Find Excavation pros in Mahopac

Avatar for Economy Handy Carpenter, LLC

Economy Handy Carpenter, LLC

4.81(
280
)
Approved Pro

Economy Handy Carpenter, LLC

4.81(
280
)
Approved Pro
Super Service Award
Customers say: True professional
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
26 years of experience

We take great pride in our experience, expertise, quality and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"Nixon and his worker worked straight for 5 hours moving 4 rooms of very difficult and heavy furniture. They then went on to repair a desk and hang a very heavy old mirror. They were wonderful. They are planning on returning in the spring to do some outside garden and yard work. I now know who to call when I need anything and everything done in my house."

Joann T on January 2026

We take great pride in our experience, expertise, quality and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"Nixon and his worker worked straight for 5 hours moving 4 rooms of very difficult and heavy furniture. They then went on to repair a desk and hang a very heavy old mirror. They were wonderful. They are planning on returning in the spring to do some outside garden and yard work. I now know who to call when I need anything and everything done in my house."

Joann T on January 2026


Avatar for Castlton Environmental Contractors, LLC

Castlton Environmental Contractors, LLC

4.98(
56
)
Approved Pro

Castlton Environmental Contractors, LLC

4.98(
56
)
Approved Pro
Customers say: Quick response
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
22 years of experience

At Castlton Environmental Contractors, LLC, we are your premier choice for professional environmental response services. We have provided high quality work and friendly customer service for years. We take pride in our work. We work hard to provide the best service possible with integrity and accountability. We would love to help you. CEC is licensed to remove or abandon your Underground Storage Tanks (UST) in New York and New Jersey. We are licensed in ny and nj , as well as fully insured. Our trained professionals will assist you in properly decommissioning your UST in a manner that satisfies local and state regulations.Castlton Environmental Contractors LLC is ready, willing and able to provide 24/7, 365 days a year, emergency spill response of hazardous and non hazardous material. Give us a call today 1-800-25-tanks ! Rockland County license#H-09559

"I had an excellent experience with Castlton Environmental Contractors, LLC. From start to finish, they made the process smooth and stress-free. Bill and Jennifer handled all the permits and paperwork, which saved me a lot of time and hassle. The work was completed in a timely, efficient, and professional manner, and the crew left everything clean when they were done. I truly appreciate their clear communication and attention to detail?highly recommend!"

bar g on August 2025

At Castlton Environmental Contractors, LLC, we are your premier choice for professional environmental response services. We have provided high quality work and friendly customer service for years. We take pride in our work. We work hard to provide the best service possible with integrity and accountability. We would love to help you. CEC is licensed to remove or abandon your Underground Storage Tanks (UST) in New York and New Jersey. We are licensed in ny and nj , as well as fully insured. Our trained professionals will assist you in properly decommissioning your UST in a manner that satisfies local and state regulations.Castlton Environmental Contractors LLC is ready, willing and able to provide 24/7, 365 days a year, emergency spill response of hazardous and non hazardous material. Give us a call today 1-800-25-tanks ! Rockland County license#H-09559

"I had an excellent experience with Castlton Environmental Contractors, LLC. From start to finish, they made the process smooth and stress-free. Bill and Jennifer handled all the permits and paperwork, which saved me a lot of time and hassle. The work was completed in a timely, efficient, and professional manner, and the crew left everything clean when they were done. I truly appreciate their clear communication and attention to detail?highly recommend!"

bar g on August 2025


Avatar for New England Environmental Services, Inc.

New England Environmental Services, Inc.

5.00(
80
)
Approved Pro

New England Environmental Services, Inc.

5.00(
80
)
Approved Pro
Super Service Award
Customers say: Quick response
26 years of experience
Free onsite estimate

We are family owned and operated that values honesty and integrity and treats your home as if it were our own. We offer fuel tank services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction! New England Environmental partners with Hearth to bring you monthly payment options for your project including 0% financing. Complete this quick financing request to see what loan options you pre-qualify for. Seeing options won't affect your credit score! https://app.gethearth.com/partners/new-england-environmental

"Team was timely, professional and efficient. Work was completed as planned and on schedule. They respected the landscape and minimized disturbing the yard. "

David W on January 2026

We are family owned and operated that values honesty and integrity and treats your home as if it were our own. We offer fuel tank services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction! New England Environmental partners with Hearth to bring you monthly payment options for your project including 0% financing. Complete this quick financing request to see what loan options you pre-qualify for. Seeing options won't affect your credit score! https://app.gethearth.com/partners/new-england-environmental

"Team was timely, professional and efficient. Work was completed as planned and on schedule. They respected the landscape and minimized disturbing the yard. "

David W on January 2026


Avatar for C2G Environmental Consultants LLC

C2G Environmental Consultants LLC

5.00(
20
)
Approved Pro

C2G Environmental Consultants LLC

5.00(
20
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
22 years of experience

C2G Environmental Consultants, LLC specializes in underground storage tank removals and abandonments, above ground storage tank removals and installations, remediation of contaminated soil, groundwater investigations, and emergency spill response. By choosing C2G Environmental, you can be assured that your environmental project will be handled with the utmost care and professionalism. C2G Environmental is a full service environmental company. What sets us apart from other companies is our highly trained staff of professional geologists and hydrologists, as well as technicians. We do not use sub-contractors or rental equipment. We are authorized by New York, Connecticut, and New Jersey to remove and haul contaminated material. Our Services: • Tank Removals, Abandonments & Installations • 24 Hour Emergency Spill Response • Ground Penetrating Radar (GPR) • Geoprobe & Vac Truck Services • Water, Soil, Air Testing/Monitoring • Liquid/Soil Transportation & Disposal • Petroleum Facility Compliance Audits (Class A/B Operator) • Phase I & II Environmental Site Assessment

"C2G was excellent during the entire process. they had a quote to my in less than 24 hours and promptly answered my questions when I called them. Once I selected them they were able to schedule the job just a few days out and I could not have been more satisfied with the outcome. The two workers who did the job were knowledgeable and respectful. In over 20 years of home ownership I would have to say this was the best experience I ever had with a home contractor."

Jim O on July 2020

C2G Environmental Consultants, LLC specializes in underground storage tank removals and abandonments, above ground storage tank removals and installations, remediation of contaminated soil, groundwater investigations, and emergency spill response. By choosing C2G Environmental, you can be assured that your environmental project will be handled with the utmost care and professionalism. C2G Environmental is a full service environmental company. What sets us apart from other companies is our highly trained staff of professional geologists and hydrologists, as well as technicians. We do not use sub-contractors or rental equipment. We are authorized by New York, Connecticut, and New Jersey to remove and haul contaminated material. Our Services: • Tank Removals, Abandonments & Installations • 24 Hour Emergency Spill Response • Ground Penetrating Radar (GPR) • Geoprobe & Vac Truck Services • Water, Soil, Air Testing/Monitoring • Liquid/Soil Transportation & Disposal • Petroleum Facility Compliance Audits (Class A/B Operator) • Phase I & II Environmental Site Assessment

"C2G was excellent during the entire process. they had a quote to my in less than 24 hours and promptly answered my questions when I called them. Once I selected them they were able to schedule the job just a few days out and I could not have been more satisfied with the outcome. The two workers who did the job were knowledgeable and respectful. In over 20 years of home ownership I would have to say this was the best experience I ever had with a home contractor."

Jim O on July 2020


Avatar for Optima Environmental Services, Inc.

Optima Environmental Services, Inc.

4.90(
48
)
Approved Pro

Optima Environmental Services, Inc.

4.90(
48
)
Approved Pro
Super Service Award
Customers say: True professional
11 years of experience
Free onsite estimate

Optima is your trusted partner for expert oil tank services. With years of experience, we specialize in the removal, abandonment, replacement, and installation of underground and aboveground storage tanks for residential and commercial properties. Our skilled team ensures safe, compliant, and efficient service—protecting your property and the environment. Ready to remove your Underground Oil Tank? Transitioning to a new energy source? Looking for a new installation? We provide top-tier tank replacement and installation. Plus, we service and repair industry-leading fuel management equipment. For a limited time, we’re offering price matching on all residential oil tank services. Payment plans are available. Choose Optima for reliable, affordable, and professional solutions—because when it comes to your property, experience matters

"The whole job was professional and efficient. The team was knowledgeable and easy to work with. Would happily contract with them again."

Lisa H on September 2025

Optima is your trusted partner for expert oil tank services. With years of experience, we specialize in the removal, abandonment, replacement, and installation of underground and aboveground storage tanks for residential and commercial properties. Our skilled team ensures safe, compliant, and efficient service—protecting your property and the environment. Ready to remove your Underground Oil Tank? Transitioning to a new energy source? Looking for a new installation? We provide top-tier tank replacement and installation. Plus, we service and repair industry-leading fuel management equipment. For a limited time, we’re offering price matching on all residential oil tank services. Payment plans are available. Choose Optima for reliable, affordable, and professional solutions—because when it comes to your property, experience matters

"The whole job was professional and efficient. The team was knowledgeable and easy to work with. Would happily contract with them again."

Lisa H on September 2025


Avatar for Hudson Valley Landscaping & Drainage

Hudson Valley Landscaping & Drainage

4.92(
29
)
Approved Pro

Hudson Valley Landscaping & Drainage

4.92(
29
)
Approved Pro
Customers say: Quick response
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
9 years of experience

Hudson Valley Landscaping and Drainage is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty and personal responsibility. Our distinction is the quality of service we bring to our customers. Being involved and working in the industry for 25 years and counting, has allowed us to give accurate knowledge of our trade combined with the ability is what makes us true professionals. Above all, we are watchful of our customer's interests and make their concerns the basis of our business. Please give us a call today!

"I recently had the pleasure of working with Hudson Valley Landscaping & Drainage to address a persistent flooding issue in my homeâ s crawl space, and Iâ m very glad I did. Marc, the owner, demonstrated an impressive level of attention to detail, thoroughly assessed the problem, and considered both short-term solutions and long-term prevention. The work progressed swiftly. Marc and his team were punctual, arriving exactly when they said they would. Their efficiency allowed us to get back to normalcy sooner than expected. After resolving the drainage problem, I was very pleased with how beautifully they restored the affected yard space. The landscaping work was perfect. I really appreciated the dialogue about options that resulted in the thoughtful placement of plants. Itâ s like our yard got a makeover! Throughout the project, the crew maintained its professionalism. Itâ s refreshing to work with a team that takes pride in their craft and treats your home respectfully. We have already discussed what future projects are possible. And, after the recent rain storms we just had, that crawl space is as dry as a bone. If youâ re seeking a reliable, skilled team for landscaping and drainage work, look no further. Hudson Valley Landscaping & Drainage delivers exceptional results. I wholeheartedly recommend them!"

Allen W on June 2024

Hudson Valley Landscaping and Drainage is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty and personal responsibility. Our distinction is the quality of service we bring to our customers. Being involved and working in the industry for 25 years and counting, has allowed us to give accurate knowledge of our trade combined with the ability is what makes us true professionals. Above all, we are watchful of our customer's interests and make their concerns the basis of our business. Please give us a call today!

"I recently had the pleasure of working with Hudson Valley Landscaping & Drainage to address a persistent flooding issue in my homeâ s crawl space, and Iâ m very glad I did. Marc, the owner, demonstrated an impressive level of attention to detail, thoroughly assessed the problem, and considered both short-term solutions and long-term prevention. The work progressed swiftly. Marc and his team were punctual, arriving exactly when they said they would. Their efficiency allowed us to get back to normalcy sooner than expected. After resolving the drainage problem, I was very pleased with how beautifully they restored the affected yard space. The landscaping work was perfect. I really appreciated the dialogue about options that resulted in the thoughtful placement of plants. Itâ s like our yard got a makeover! Throughout the project, the crew maintained its professionalism. Itâ s refreshing to work with a team that takes pride in their craft and treats your home respectfully. We have already discussed what future projects are possible. And, after the recent rain storms we just had, that crawl space is as dry as a bone. If youâ re seeking a reliable, skilled team for landscaping and drainage work, look no further. Hudson Valley Landscaping & Drainage delivers exceptional results. I wholeheartedly recommend them!"

Allen W on June 2024


Avatar for Downrite Construction, Inc.

Downrite Construction, Inc.

5.00(
9
)
Approved Pro

Downrite Construction, Inc.

5.00(
9
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
18 years of experience

We are a locally owned and operated company that values honesty and integrity in all aspects of our business. Our major focus is on the quality of our work and producing outstanding results. We are committed to creating a level of value unmatched by any of our competitors. We look forward to building lasting relationships with our clients and guarantee your satisfaction!

"Shawn is thorough and has great communication skills He keeps to the timeline and his work is great. I am very happy with all the work he completed at my house. I highly recommend him and already have to a good friend."

Nancy G on August 2023

We are a locally owned and operated company that values honesty and integrity in all aspects of our business. Our major focus is on the quality of our work and producing outstanding results. We are committed to creating a level of value unmatched by any of our competitors. We look forward to building lasting relationships with our clients and guarantee your satisfaction!

"Shawn is thorough and has great communication skills He keeps to the timeline and his work is great. I am very happy with all the work he completed at my house. I highly recommend him and already have to a good friend."

Nancy G on August 2023


Avatar for C2G Environmental Consultants, LLC

C2G Environmental Consultants, LLC

4.61(
117
)
Approved Pro

C2G Environmental Consultants, LLC

4.61(
117
)
Approved Pro
Customers say: True professional
22 years of experience
Free onsite estimate

C2G Environmental has 20 years of experience removing, abandoning and installing underground and above ground storage tanks (heating oil tanks), as well as, remediating contaminated soils from leaking tanks. By choosing C2G Environmental, you can be assured that your environmental project will be handled with the utmost care and professionalism. We specialize in residential & commercial underground oil tanks and services. We are fully licensed and insured to perform all aspects of underground oil tanks removal, abandonment's and installations in New York, Connecticut, and New Jersey, plus soil and groundwater remediation.

"Excellent service. Crew arrived on time, performed the work in the estimated time, and did a really good job. They were very neat and left the area clean. I highly recommend C2G."

Roy C on October 2025

C2G Environmental has 20 years of experience removing, abandoning and installing underground and above ground storage tanks (heating oil tanks), as well as, remediating contaminated soils from leaking tanks. By choosing C2G Environmental, you can be assured that your environmental project will be handled with the utmost care and professionalism. We specialize in residential & commercial underground oil tanks and services. We are fully licensed and insured to perform all aspects of underground oil tanks removal, abandonment's and installations in New York, Connecticut, and New Jersey, plus soil and groundwater remediation.

"Excellent service. Crew arrived on time, performed the work in the estimated time, and did a really good job. They were very neat and left the area clean. I highly recommend C2G."

Roy C on October 2025


"Highly recommend"

Melinda V on March 2025

We pride our company on reliability, great communication, integrity, and quality work. We are experts in our trade and will do our best to keep you as educated as we can on your particular task or project. We look forward to earning your business!

"Highly recommend"

Melinda V on March 2025


"Excellent and professional work. Even when surprises surfaced throughout the project, Frank and the team handled everything very professional. Would hire again!"

Daniel I on October 2025

We specialize in all aspects of Asphalt Paving, Excavation, and Concrete Projects with over 20 years experience. When you call you receive the most professional experience from beginning to end.

"Excellent and professional work. Even when surprises surfaced throughout the project, Frank and the team handled everything very professional. Would hire again!"

Daniel I on October 2025

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Showing 1-10 of 388
Excavating questions, answered by experts

The digging depth will depend on the size of the trencher you use. Even smaller units can dig up to 4 feet deep, which is plenty for a DIY job. However, much larger trenchers can reach a depth of 18 feet and are better used by a team of pro contractors, not a single DIYer. As with all home improvement projects, use the right tool for the job and proceed with caution.

There is no standard depth, but typically, septic tanks are buried between 4 inches and 4 feet underneath the earth’s surface. There are a few factors that will determine your tank’s depth, including the height of your bedrock, the distance between your home and the tank, and the depth of your main sewer line.

Slab foundations are more affordable than crawl spaces because they require minimal excavation, as the slab sits directly on the ground or on footers that only sink a few feet into the ground. Crawl spaces require excavation of the entire footprint of the home to several feet below the surface. Not only does that mean higher labor costs, but more materials are necessary for the concrete foundation walls.

If you have a broken sprinkler pipe underground, there will be some signs you can easily spot to locate it and take action. These include leaks, water spouts, flooding, consistently damp areas on your lawn, low water pressure, and grass around the sprinkler head that’s taller and darker than anywhere else in the yard. 

If there are no obvious signs of a broken pipe, you can use tools such as water leak mics, leak noise loggers, audio devices that record leaks, and acoustic testing links. 

Broken pipes can lead to uneven watering, plant damage, and higher utility bills. The longer you wait to fix them the more the repair cost may be.

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 Mahopac, NY homeowners’ guide to excavation services

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

What do you need done? We’ll find top pros.
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  • 🛠 "Fix a leaking pipe under the sink"
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