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MJ Windows Co.

Top Pro

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Repair types

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Why this pro?

Customers say this pro is quick, neat, and responsive, and they provide window and door installation services and solar panel repair and setup. They’ve been in business for 4 years.

Summarized from the pro's profile. Review their profile for the latest.

About
At MJ Windows Co. we provide exceptional service to our customers. Satisfaction is guaranteed! We offer excellent quality in windows as well as installation at very affordable prices. Making our customers happy is the main focus here!
Overview

Current Top Pro

Hired 52 times

Serves Chelsea, MA

Background checked

2 employees

8 years in business

Business hours

This pro hasn't listed their business hours.

Payment methods

This pro accepts payments via Cash, Check, Credit card, Square cash app, and Venmo.

Top Pro status

Top Pros are among the highest-rated, most popular professionals on Thumbtack.

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2023

Top Pro Icon

2021

Services offered
Repair types
Deck or porch material

Wood

Concrete

Composite

Tile

Property type

Residential

Projects and media
Projects and media
Reviews

Customers rated this pro highly for work quality, responsiveness, and value.

Exceptional 5.0

42 reviews

5

100%

4

0%

3

0%

2

0%

1

0%

Read reviews that mention:

pro avatar
Carol S.

Oct 25, 2025

•

Hired on Thumbtack

MJ Windows reached out to me right after I posted my project. William came by the house and provided a thoughtful solution for my windows at a very reasonable price. The quality of the work is excellent, and they were great to work with throughout the process. I felt comfortable and confident trusting William’s professional suggestions. I would highly recommend MJ Windows to anyone looking for window installation or repair services.

Details: 5 - 8 windows • Double hung (slides up and down) • Residential

Window Installation
pro avatar
Brian L.

Oct 19, 2025

•

Hired on Thumbtack

William and the MJ Windows team are excellent. William provided exceptional customer service from the beginning. He responded to every text or call immediately, answered all questions considerately, and managed a respectful onsite team. The team met schedule commitments and followed up with timing updates throughout the project. I especially appreciated that William both handled the sales call and managed the onsite work. His knowledge enabled him to recommend creative solutions that other contractors did not, and it ultimately saved us money. This is the top reason we picked MJ Windows.

Details: Double hung (slides up and down) • Casement (pushes open on a hinge) • Residential

Window Installation
pro avatar
Susan A.

Oct 26, 2024

•

Hired on Thumbtack

William and crew did a great job replacing 6 basement windows. They worked quickly and neatly. We are very satisfied with the quality and installation.

Details: 5 - 8 windows • Casement (pushes open on a hinge) • Residential

Window Installation
pro avatar
Lisa C.

Oct 5, 2024

•

Hired on Thumbtack

William is excellent. He came right over answered my inquiry immediately gave me an estimate for the windows ordered the product and they’ve been installed and they’re absolutely beautiful.

Details: 5 - 8 windows • Double hung (slides up and down) • Residential

Window Installation
pro avatar
Susan P.

Sep 12, 2024

•

Hired on Thumbtack

William and his team were wonderful. First, William is a warm, thoughtful and honest person and so was his team. They installed 4 bay windows and four double hung "regular" windows, all double hung. They also put on for me the antique window lifts that match my rehabbed home buillt in the 1850s. In doins that one lower pane in 2 windows developed a smalll crack. He ordered new ones with no charge to me for the windows or the extra labor,. Came back and replace those two windows, reapplying the antique window lifts once again. This time without incident. Then, also for no charge, he cut a piece of wood on an angle so that my window a/c could had more stability,, not so easy a task it turned out, but he took the time to do it and again refused to take the money I offered him for that work. He's a sweet man and does a great job. My 8 windows look great and the price for installing them was better than others had bid. I highly recommend this company with no reservations. Hire him!

Details: 5 - 8 windows • Double hung (slides up and down) • Residential

Window Installation
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Joshua Mora

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