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At J.A.M. Construction we can install new underground electricity, gas line, water service, sewer connections. Here at J.A.M. Construction we can dig for your new concrete formwork and install and pour footings and walls. J.A.M. Construction and install your above ground septic, install leach field and provide sewer connection to your town sewer main.

J.A.M. Construction can clear your land of trees and grade the property to your specifications. With more then 50 pieces of equipment J.A.M. Construction can excavate and grade your project.
Services
We can strip your site down to the specifiactions required and haul away excess materials. We can install or replaced your sewer service, install water lines, gas line and underground electrical. In 1966 with a backhoe and small dump truck, John A. Marshall began a small business named J.A.M. Construction.
The Portuguese Discovery Monument is a tribute to the Portuguese navigators of the golden age of maritime exploration. We had the pleasure of rehabilitating this monument to honor these navigators. Starting off as the Seaview hotel located in Middletown, RI, J.A.M. was contracted to perform all site work aspects from demo to final restoration.
Volumetric concrete mixers are designed to carry sand, stone, cement, water and admixtures in separate compartments and dispense the exact amount needed at the job site without waste. With a 12' reach off the back of the truck we can pour directly into the tubes to save on labor. Our truck is perfect for small to medium type generator, propane tank or walkway job that might have.
John was born into this business, with his father John A. Marshall, Sr. as the founder of J.A.M. Construction. John joined the Air Force out of High School and received an Honorable Discharge in 2002 and returned to take over the family business. John manages the company policies, procedures and performance standards of all field and office personal.
Reviews (8)
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Santiago Laboy
Dec 24, 2021
We had a waterline that was failing and J.A.M. Construction responded quickly and fixed the problem without hurting my wallet! Thank you J.A.M!
K. M.
May 20, 2021
JAM did another Winter season of snowplowing and road treatment for us at Oakland Farm. They never get better, in fact the service is worse every year. Constant noise in the middle of the night because of poor planning as well as excessive sand spreading. They do not handle complaints well and the management company knows they do a terrible job and have admitted it. Not sure why they keep the contract, probably because no one else will do business with them.
J. K.
Jun 27, 2020
Owner doesn't take responsibility for his mistake and subpar work. Sand is used for traction, not ice melt and when it is applied before it snows or ice is present then its senseless to use. I understand they cannot predict weather, that is what weather forecasts are for. Terrible service with no common sense. Update, JAM still providing a senseless service for plowing. 1-2 fell, they came and spread sand on top of the snow only to plow minutes later.

I hope they realize that this is senseless since the plowing will literally plow the sand away rendering useless on the side of the road. Heavy machinery is loud and obnoxious.
Oakland Farm
Jun 09, 2020
We have them for snow removal and they plow when they don't need to and when theres a lot of snow they show up late. Using heavy equipment to plow 1 of snow is ridiculous, not to mention all the noise and back-up beepers at 3 am in the morning.
Kose Lig
Dec 08, 2019
Very unprofessional company, we were going to buy a new house they constructed and I found multiple issues with the quality of work, sheetrock screws coming out, unnecessary holes in the roof that they covered up and cracks in the foundation. They tried to pass it off as normal so its apparent they operate a unethical business. JAM construction did build a house on Randolph way in Portsmouth, not a very well built house but they built it. I still have the contract. So the owner is either absent minded or is dishonest.
Amy Piccalo
Nov 23, 2019
The most unprofessional construction company on the island. Rude employees and sub-par work. All the 5 star reviews are family and employees with no description.
Melissa Barker
Jun 06, 2019
Called JAM in for an emergency water line break at a critical facility, and at a moment's notice, they were on site and worked through the night to fix the leak, and get the water flowing again. Their crew demonstrated great logistical knowledge of the situation and work tirelessly until the job was completed. The facility residents and the property manager could not stop complimenting their hard work. I will always trust my critical jobs to JAM.
Charles Callan
Mar 26, 2019
Very rude. Do not hire them. Swearing and yelling on the job site.