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Top-Rated Excavation pros in Portsmouth - Updated Nov 2026

Avatar for Morton Excavation
Morton Excavation
4.9(
14
)
Excavation - Major Grading or ReslopingExcavation - Major Grading or Resloping - For Business

Serving Portsmouth, NH and surrounding areas

Approved

In business since 2016

Free estimates

Small jobs welcome

"All materials were removed and hauled off in a 30-ft dumpster. I was very satisfied with the demolition work ? everything was handled efficiently and professionally. Morton Excavation offers fair pricing and delivers quality results. I would definitely recommend them to anyone needing excavation or demolition services."
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 JW's Landscape Construction, LLC
JW's Landscape Construction, LLC
4.3(
48
)
Building Site - Preparation and ClearingExcavation - Major Grading or ReslopingExcavation - Major Grading or Resloping - For Business

Serving Portsmouth, NH and surrounding areas

Approved

In business since 2001

Free estimates

Emergency services offered

"I live in Greenland and our house is about 25 years old. Over the last 2 years, we noticed that some lawn depressions were forming on the side of the property that borders protected wetlands managed by The Nature Conservancy. Concerned about the increasing size of these depressions over time, we contacted John Welch, the owner of JWs Landscape Construction. John followed up immediately with a site visit and opinion that the cause of the depressions was burial of tree stumps and other debris when the contractor cleared the lot to build the house. John quickly provided us with an estimate to excavate and remove the trunks and return the lawn to its original condition. John and his team did an excellent job. It was amazing how many tree stumps had been buried in this area. We also have a lawn sprinkler system and his team was very careful about ensuring there was minimal disruption to the lines and heads. His knowledge about these sink holes proved valuable as well. I would highly recommend him to anyone who suspects they have this issue occurring on their property."
 Paver driveway drainage failing
 Old fronty entry
 New Home with no walkway
 Building a stone wall on the water in Dover
 Landscape timbers falling down

+221

5 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for NH Projects LLC
NH Projects LLC
5.0(
20
)
Building Site - Preparation and ClearingBuilding Site - Preparation and Clearing - For Business

Serving Portsmouth, NH and surrounding areas

Approved

In business since 2021

Free estimates

Customers say: Quick response

NH Projects LLC is the place to call for all your basement and bathroom remodeling needs. Our small team brings well over 35 years of construction experience to ensure your project goes smoothly and compliments your space. We pride ourselves on honestly, hard work, and innovate skills to aid our customers in their home improvement endeavors. Give us a call today!

Our Work
Our Work
Our Work
Our Work
Our Work

+8

Response time5 hrs
Response rate87%
1 neighbors recently requested a quote
Avatar for ADM Hauling and Excavation LLC
ADM Hauling and Excavation LLC
5.0(
4
)
Building Site - Preparation and ClearingExcavation - Major Grading or ReslopingWater or Fuel Tank - Remove

Serving Portsmouth, NH and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"-Communication exceptional; emails answered in a timely fashion -Estimate/charge was very fair in today's market -Arrived on time and started work immediately -Tree growth in field was cut as asked; a job well done I am very pleased with the completed job and would not hesitate to call ADM Hauling and Excavation again. Highly recommend!"
31 neighbors recently requested a quote
Avatar for Bond-Tite Tank Service
Bond-Tite Tank Service
4.9(
52
)
Water or Fuel Tank - Install or Replace

Serving Portsmouth, NH and surrounding areas

Approved

In business since 1958

Free estimates

Warranties offered

We have over 60 years of experience in replacing or removing aboveground residential oil storage tanks in MA, southern NH, northern and eastern CT, and RI. \n\nWe're here to help you navigate this process and will provide superior customer service in the process. Our vehicles are fully stocked, and each has specialized equipment which enables us to replace most oil tanks in under 3 hours. We're here to be of service to you by 1) providing multiple options for your tank replacement, 2) providing fast and efficient inspections, and 3) providing your written estimate within 24hrs of the inspection.\n\nAsk about seasonal promotions/ discounts available when you call or message us!

275Gal Replacement
Roth Tank Upgrade
The Oil Tank Professionals!
Got Tanks?
18May2021

+4

Response time1 day
Response rate93%
Recommended by91%of homeowners
Avatar for Willow Creek Land Design
Willow Creek Land Design
4.2(
151
)
Excavation - Major Grading or ReslopingExcavation - Major Grading or Resloping - For Business

Serving Portsmouth, NH and surrounding areas

Approved

Super Service Award Winner

In business since 2012

Free estimates

Emergency services offered

"Russell and his crew were top notch and professional from estimate to job completion. It's challenging to find a contractor that is flexible, responsive, and expert at what they do and they exceeded all of our expectations. They did a large excavation project on our front yard that set the table for a follow on large landscaping project and they executed the work beyond requirements. His team were even sweeping our driveway that they barely used at the completion of work! We will be using them for upcoming masonry work because we've seen all we need to see from Russell and his excellent crew. It's a rare opportunity for us to speak so glowingly about a contractor or craftsman and we're glad to do it."
Landscape Design & Install
Spring Clean up
Spring Clean up and Mulch Application
Drone view of raised retention wall garden bed
Ground level view

+12

Response time1 day
7 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for Carideo Services
Carideo Services
4.7(
41
)
Excavation - Major Grading or ReslopingExcavation - Major Grading or Resloping - For Business

Serving Portsmouth, NH and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Emergency services offered

"Frank was great. Had him here to excavate for a shed and he did an excellent job. He was reasonably priced, knowledgeable, and friendly. Also dug conduit for electrical for it. Awesome guy and would love to work with him again."
Waterfront Excavating
Waterfront Excavating
Propane Tank Installment
Uunderground Propane tank
TJ MAXX Sign

+7

Response time6 hrs
Response rate98%
9 neighbors recently requested a quote
Seacoast Dump Guy
4.7(
68
)
Building Site - Preparation and ClearingExcavation - Major Grading or ReslopingBuilding Site - Preparation and Clearing - For Business+1 more

Serving Portsmouth, NH and surrounding areas

Approved

In business since 2010

Free estimates

Credit card accepted

We take great pride our experience, expertise, quality, and customer service that we provide to meet the consumer need. 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.

Response time7 hrs
94 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for James Donegan
James Donegan
4.7(
111
)
Water or Fuel Tank - Install or ReplaceWater or Fuel Tank - Remove

Serving Portsmouth, NH and surrounding areas

Approved

In business since 1988

Free estimates

Offers commercial services

Contact James Donegan for reliable oil tank installation, replacement, and oil-fired boiler services. With over 30 years of hands-on experience, James delivers safe, code-compliant work you can trust to be done right the first time. He has been recognized as a HomeAdvisor “Best Of” award winner and is Roth Oil Tank certified, ensuring high standards and expert-level service on every job. When it comes to your heating system, you’re in experienced hands.

7 neighbors recently requested a quote
Recommended by97%of homeowners
Ace's Excavation and Trucking
5.0(
2
)
Excavation - Major Grading or ReslopingExcavation - Major Grading or Resloping - For Business

Serving Portsmouth, NH and surrounding areas

Approved

In business since 2021

Free estimates

Credit card accepted

Our team is passionate & professional and committed to providing the absolute best experience for our clients. Our obsession over cost, schedule, safety, and quality ensures that projects are completed on time, within budget, and with impeccable attention to detail. \n \nFrom beginning to end of every project, our goal is to bring every aspect and detail of our client's concept to reality. We believe that strong communication, integrity, organization and honesty are the principles that have given us such a trusted reputation in a competitive industry. We are proud of the work that we do, and passionate about bringing visions to life. Give us a call today!

Recommended by100%of homeowners
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FAQs for excavation projects in Portsmouth, NH

Depth depends on the type of installation and the regulations in your area. Water supply lines typically require 24 inches, while drainage pipes are often installed 36 inches below grade. For most general projects, a depth of 12 to 24 inches and a width of about eight inches is sufficient. Sticking to these specs keeps your utilities safe, code-compliant, and easier to maintain later.

When you need to run utilities underground, you’ve got two main options: boring or trenching. Boring employs directional drilling to install utilities without exposing a continuous channel, while trenching requires excavating an open channel to place utilities securely. Directional drilling preserves landscape integrity, whereas trenching provides direct access for installation, albeit with greater surface disruption. This clear comparison helps you select the method best suited to your project.

Plan on 12 hours to dig 100 linear feet when the soil is cooperative and you can work continuously. This timeframe applies when work is performed consistently and methodically. Factors such as rocky soil, tree roots, obstructions, and frozen ground increase the overall duration, demanding extra planning and effort. Comprehensive operational planning ensures that every challenge is managed efficiently and the project is completed on schedule.

If you want your yard to look untouched, laying fresh sod over the trench is the quickest fix. New sod needs 30 to 45 days to root and blend with the rest of your lawn. A local sod pro can provide you with a firm timeline and tips to ensure the grass takes hold and maintains your curb appeal.

The Portsmouth, NH homeowners’ guide to excavation services

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