Built on trust. Finished with pride.Stronger homes.
Stronger homes.
Better built.
Roofing and exterior construction by a local, family-owned team serving Delaware, Pennsylvania, and New Jersey.
Licensed & insured14 years of experienceFinancing available
14+Years of experience
3States served
FreeProject estimates
FamilyOwned & operated
Credentials shown on JM's current site
What we do
Exterior work that makes a difference.
From essential repairs to ambitious improvements, JM General Contractors brings experienced hands to every project.
The JM difference
Good work starts with good people.
JM General Contractors is a family-owned company led by Juan Alvarado, with Areli Vasquez coordinating the office. The team serves residential and commercial customers throughout the Tri-State area.
They focus on quality craftsmanship, dependable service, and straightforward communication from the first call through the finished job.
- Residential and commercial projects
- Roofing, siding, windows, doors, fencing, and outdoor spaces
- Free estimates and 100% financing available
Why JM
A clear purpose behind every project.
Our mission
JM General Contractors LLC is a company dedicated to the construction of all kinds of projects and the repair and remodeling of existing projects.
Our vision
Our goal is to serve our clients effectively, making our work our prominent promotion.
Our values
We pursue quality work, exhausting all the necessary resources to achieve it.
Current offers
A good time to get started.
Published offers from JM General Contractors. Mention the applicable offer when requesting your estimate.
Windows or siding
With this coupon. Not valid with other offers or prior services.
View offer ↗Concrete work
Driveway, sidewalk, patio, and related work. With this coupon. Not valid with other offers or prior services.
View offer ↗Roofing 4,000 sq ft+
With this coupon. Not valid with other offers or prior services.
View offer ↗Roofing 1,000 sq ft+
With this coupon. Not valid with other offers or prior services.
View offer ↗Offers expire December 31, 2026. With coupon. Not valid with other offers or prior services. Confirm project eligibility with JM General Contractors.
Proof in the work
Projects around the community.
See roofing, siding, decks, porches, and concrete work from the current JM project gallery.
Customer voices
Work people remember.
A few reviews preserved from JM's current website.
★★★★★Simply the best experience you can have. Juan and his guy's came out and secured my roof, inclusive cleaned the drain. It was a wonderful feeling to get to know them. And the price was extremely affordable. Thank you JM General Contractor. - New Age TV 2
★★★★★We needed to repair siding on our house. JM General Contractor handled everything in a professional manner, maintaining communication with us throughout the repair. Juan showed up on time and did an excellent job completing the repair. We highly recommend them for their siding repairs/installations. - Craig L.
★★★★★John & crew replaced my gutters in a very timely manner. They were very polite and considerate. They did a great job on the installation and clean up afterwards. I will definitely keep JM General Contractor in mind for future jobs. - Judy Ann S.
Where we work
Local knowledge across the Tri-State area.
Based in Wilmington and serving customers across Delaware, Pennsylvania, and New Jersey.
Start with a conversation
Tell us what needs work.
Share a few details about your roof, exterior, or outdoor project. The JM team can follow up about a free estimate.
- Roofing and exterior repairs
- New installations and replacements
- Residential and commercial work
Request a free estimate
Let's build something better
Get a free estimate ↗Tell us about your project.
Talk with the JM team and request a free estimate.