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  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon35
    Verified excavation services reviews

Find Excavation pros in Randolph

"George described the pro’s and cons of the potential fixes and provided speedy and professional service. "

Richard E on November 2025

Olympic Mechanical proudly serves it's customers with pride, integrity and attention to the details that matter most to you. This is one of the many things that sets us apart from the rest. We are locally owned and operated. Give us a call today!

"George described the pro’s and cons of the potential fixes and provided speedy and professional service. "

Richard E on November 2025


Avatar for Joseph & Sons Construction, LLC

Joseph & Sons Construction, LLC

5.00(
145
)
Approved Pro

Joseph & Sons Construction, LLC

5.00(
145
)
Approved Pro
Customers say: Quality work
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
31 years of experience

Joseph & Sons Construction, LLC, does everything from custom home building and remodeling to small commercial build outs. We offer quality, professionalism and competitive pricing for every job, regardless of project size. Customer satisfaction is our primary goal. Joseph & Sons Construction, LLC, looks forward to making your dream a reality.

"Angelo & team were amazing to work with. From design to implementation, it was a smooth experience. We had the same crew working at our house every day- the guys were friendly, polite, tolerated my 5 year old daughter asking them what they were doing each day (LOL). Their work was top notch- no corners cut. Every day they left my house clean, nothing left out- all materials put away and the rooms were safe for my kids and dog to be in. We couldn’t be happier with the work done. "

jackie l on December 2025

Joseph & Sons Construction, LLC, does everything from custom home building and remodeling to small commercial build outs. We offer quality, professionalism and competitive pricing for every job, regardless of project size. Customer satisfaction is our primary goal. Joseph & Sons Construction, LLC, looks forward to making your dream a reality.

"Angelo & team were amazing to work with. From design to implementation, it was a smooth experience. We had the same crew working at our house every day- the guys were friendly, polite, tolerated my 5 year old daughter asking them what they were doing each day (LOL). Their work was top notch- no corners cut. Every day they left my house clean, nothing left out- all materials put away and the rooms were safe for my kids and dog to be in. We couldn’t be happier with the work done. "

jackie l on December 2025


"Great service!"

Lonale B on January 2026

Alternative Petroleum Services, LLC. We can take care of all your needs from removal, replacement, and installation of fuel tanks. With many years in the industry, you can expect professionalism and experience. Call today for a consultation.

"Great service!"

Lonale B on January 2026


Avatar for Sterling Environmental Services, LLC

Sterling Environmental Services, LLC

4.74(
100
)
Approved Pro

Sterling Environmental Services, LLC

4.74(
100
)
Approved Pro
Super Service Award
Customers say: True professional
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
28 years of experience

It's true: A fuel tank will eventually corrode and leak. If you encounter a tank that is more than 15 years old, there is a good chance that substantial corrosion has taken place. Trust that Sterling will remove your tank with the utmost care for your property and will create a safe environment for your family. Call Sterling Environmental Services today!

"Sterlington Environmental removed my "ready to leak" 60 year old in-basement oil tank and replaced it with a clean, modern Roth tank in about half a day. This is an inherently messy job and they did it quickly and efficiently while paying attention to the rest of my home. The entrance to my basement is through the house and they laid down protective materials to protect my floors and were very careful not to damage anything or spill oil as they worked and moved materials, tools and supplies in and out of the basement. They also handled all the permitting and inspections. I hope to never have to do this again, but if I do, I will call Sterling to do the job. "

Richard H on October 2025

It's true: A fuel tank will eventually corrode and leak. If you encounter a tank that is more than 15 years old, there is a good chance that substantial corrosion has taken place. Trust that Sterling will remove your tank with the utmost care for your property and will create a safe environment for your family. Call Sterling Environmental Services today!

"Sterlington Environmental removed my "ready to leak" 60 year old in-basement oil tank and replaced it with a clean, modern Roth tank in about half a day. This is an inherently messy job and they did it quickly and efficiently while paying attention to the rest of my home. The entrance to my basement is through the house and they laid down protective materials to protect my floors and were very careful not to damage anything or spill oil as they worked and moved materials, tools and supplies in and out of the basement. They also handled all the permitting and inspections. I hope to never have to do this again, but if I do, I will call Sterling to do the job. "

Richard H on October 2025


Avatar for ADR Environmental,  LLP

ADR Environmental, LLP

4.76(
57
)
Approved Pro

ADR Environmental, LLP

4.76(
57
)
Approved Pro
Customers say: True professional
Recommended by 96% of Angi customers
Recommended by 96% of HomeAdvisor customers
15 years of experience

At ADR Environmental, we are committed to delivering high-quality workmanship and exceptional customer service on every project. Our mission is to ensure complete customer satisfaction through clear communication, professionalism, and attention to detail from start to finish. Our reputation is founded on service, safety, and quality, regardless of project size.

"Oil tank removal. Additionally they removed debris from my yard. "

Steve S on September 2025

At ADR Environmental, we are committed to delivering high-quality workmanship and exceptional customer service on every project. Our mission is to ensure complete customer satisfaction through clear communication, professionalism, and attention to detail from start to finish. Our reputation is founded on service, safety, and quality, regardless of project size.

"Oil tank removal. Additionally they removed debris from my yard. "

Steve S on September 2025


Avatar for Pascale Plumbing & Heating, Inc.

Pascale Plumbing & Heating, Inc.

4.69(
108
)
Approved Pro

Pascale Plumbing & Heating, Inc.

4.69(
108
)
Approved Pro
Customers say: True professional
15 years of experience
Free onsite estimate

When your plumbing stops working, you need fast, reliable services. You can get all of that and more, from a dependable professional like Angelo Pascale. Our trusted team will help return your home to normal. We specialize in all your plumbing needs. Call us for a free estimate today.

"Kevin figured out a tricky problem with our clogged pipe effecting or washer capacity, was super professional and great at his job! 10/10 great service, affordable pricing! "

Hayley v on July 2025

When your plumbing stops working, you need fast, reliable services. You can get all of that and more, from a dependable professional like Angelo Pascale. Our trusted team will help return your home to normal. We specialize in all your plumbing needs. Call us for a free estimate today.

"Kevin figured out a tricky problem with our clogged pipe effecting or washer capacity, was super professional and great at his job! 10/10 great service, affordable pricing! "

Hayley v on July 2025


Avatar for Kearns Construction, LLC

Kearns Construction, LLC

4.79(
12
)
Approved Pro

Kearns Construction, LLC

4.79(
12
)
Approved Pro
Customers say: Quick response
32 years of experience
Free onsite estimate

Kearns Construction, LLC, prides our company on reliability, great communication, integrity and quality work. We have been working in the industry for over 30 years. We are experts in our trade and we 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. All of our decisions and actions are driven by a set of core values. our service is professional, high quality, fair and good value. We strive for customer satisfaction. We look forward to earning your trust and your business. Fully insured and we will be happy to provide certificate of insurance upon request.

"Could not be more pleased with Kevin Kearns and his Kearns Construction company. His extensive knowledge, and commitment to excellence was evident in the photos and videos he showed us pertaining to the jobs he has done. It was so refreshing to deal with a person who takes pride in what they do and goes above and beyond what is expected to insure the project is done correctly. What struck us the most about Kevin was his high level of integrity; he not only took the time to understand our project, but went out of his way to insure we knew exactly what he would be doing to remedy our situation. We highly recommend Kearns Construction, LLC."

Maureen L on February 2023

Kearns Construction, LLC, prides our company on reliability, great communication, integrity and quality work. We have been working in the industry for over 30 years. We are experts in our trade and we 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. All of our decisions and actions are driven by a set of core values. our service is professional, high quality, fair and good value. We strive for customer satisfaction. We look forward to earning your trust and your business. Fully insured and we will be happy to provide certificate of insurance upon request.

"Could not be more pleased with Kevin Kearns and his Kearns Construction company. His extensive knowledge, and commitment to excellence was evident in the photos and videos he showed us pertaining to the jobs he has done. It was so refreshing to deal with a person who takes pride in what they do and goes above and beyond what is expected to insure the project is done correctly. What struck us the most about Kevin was his high level of integrity; he not only took the time to understand our project, but went out of his way to insure we knew exactly what he would be doing to remedy our situation. We highly recommend Kearns Construction, LLC."

Maureen L on February 2023


Avatar for Andres General Construccion

Andres General Construccion

5.00(
8
)
Approved Pro

Andres General Construccion

5.00(
8
)
Approved Pro
Customers say: Quality work
16 years of experience
Free onsite estimate

With 4 years of experience, 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!

"Jonathan, Ernesto, and his Team did a great job renovating our stairs. As a first-time homebuyer, we wanted to renoâ our stairs and install metal railings. They acknowledged our concerns and answered our questions promptly. We love how our stairs and railings came out. 100% recommend these guys. I will contact them again for future projects."

Arnold M on December 2022

With 4 years of experience, 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!

"Jonathan, Ernesto, and his Team did a great job renovating our stairs. As a first-time homebuyer, we wanted to renoâ our stairs and install metal railings. They acknowledged our concerns and answered our questions promptly. We love how our stairs and railings came out. 100% recommend these guys. I will contact them again for future projects."

Arnold M on December 2022


Avatar for JWSR, LLC

JWSR, LLC

4.82(
11
)
Approved Pro

JWSR, LLC

4.82(
11
)
Approved Pro
Customers say: Quality work
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
10 years of experience

JWSR LLC is focused on providing high-quality services and customer satisfaction to each and every customer. We will do everything we can to meet your expectations and we are sure you will be happy to work with us. As experts in the field, we are known to pay exquisite attention to detail while making customer satisfaction our top priority. Call us today to learn more about how we can help you

"Excellent service,. Very responsive"

Robert H on December 2020

JWSR LLC is focused on providing high-quality services and customer satisfaction to each and every customer. We will do everything we can to meet your expectations and we are sure you will be happy to work with us. As experts in the field, we are known to pay exquisite attention to detail while making customer satisfaction our top priority. Call us today to learn more about how we can help you

"Excellent service,. Very responsive"

Robert H on December 2020


Avatar for C3 Soil & Aggregate

C3 Soil & Aggregate

5.00(
8
)
Approved Pro

C3 Soil & Aggregate

5.00(
8
)
Approved Pro
Customers say: Quick response
15 years of experience
Free onsite estimate

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! Book with us online or feel free to give us a call today!

"I contacted Josh at C3 for a quote to prepare and build a flat, level, 18' by 14' base on a slope framed with 3 levels of 6 x 6 timbers to retain 3 individual layers of premium quality aggregate for superior drainage and soil stability. His design was to insure the driest base environment to install a shed that will last far longer than other contractors I spoke with. I couldn't have been happier with my choice of C3. He and his crew were very professional and detailed in the work performed. Always on time and mindful of the surrounding work area and exceptionally detailed in their final cleanup of the site. I would recommend Josh and his company for this type of work and larger projects due to his commitment to excellence and customer satisfaction."

* P on November 2024

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! Book with us online or feel free to give us a call today!

"I contacted Josh at C3 for a quote to prepare and build a flat, level, 18' by 14' base on a slope framed with 3 levels of 6 x 6 timbers to retain 3 individual layers of premium quality aggregate for superior drainage and soil stability. His design was to insure the driest base environment to install a shed that will last far longer than other contractors I spoke with. I couldn't have been happier with my choice of C3. He and his crew were very professional and detailed in the work performed. Always on time and mindful of the surrounding work area and exceptionally detailed in their final cleanup of the site. I would recommend Josh and his company for this type of work and larger projects due to his commitment to excellence and customer satisfaction."

* P on November 2024

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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. 

It can take several weeks for the ground to settle after removing a tree, and the soil under larger, more mature trees can take months. The deeper the tree has been ground under the soil, the longer it will take to settle. However, this extra depth can help you plant new landscaping sooner because you’ll have more space for fresh soil.

A mini excavator can dig between 5 and 11 feet deep, depending on the type and size of the mini excavator. Mini hydraulic excavators are more powerful and can reach deeper into the earth, but electric models have a more limited range. Mini excavators over two tons in size are also more powerful and able to dig as deep as 11 feet.

A perc test takes an average of around two hours, but it can range from one hour up to around six hours. Perc tests that require wider or deeper holes and those that require multiple holes dug throughout your property will take longer because there’s more excavation involved. The actual filling of the hole and monitoring to gauge the rate of percolation should take under an hour per hole.

The depth of a septic tank’s drain lines is between 18 and 36 inches underground. These pipes are filled with perforations and surrounded by sand, gravel, or a combination of both, as both materials help filter wastewater. While some pipes are buried closer to the surface, this can create problems unless the soil is compact and doesn’t shift much. 

The Randolph, NJ 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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