Building Your in Massachusetts
Greenstone Builders brings 40+ years of expertise to crafting personalized homes. Specializing in colonials, ranches, and farmhouses, we ensure quality and satisfaction in every build. Start building your dream home today!
Meet Builder Joshua Olson
Originally founded as a family business, Greenstone is now led by Joshua Olson. With deep roots in the construction industry, Josh and the Greenstone team have built more than 500 homes over the past 40 years.
Working with a dedicated group of professionals, Greenstone consistently delivers high-quality homes in as little as 8–12 weeks.* With a diverse portfolio of home plans, they offer a wide range of styles to suit every taste. Their flexibility allows clients to personalize, customize, and modify designs to meet their specific needs.
Crafting Dream Homes with Unmatched Expertise and Dedication
At Greenstone Builders, we specialize in bringing your vision to life. With over 40 years of experience, we’ve mastered the art of constructing beautiful, high-quality homes tailored to your unique needs and preferences. We are committed to excellence in every project.

Transparent Home Building
At Greenstone Builders, we believe in keeping you informed every step of the way. From initial design to final walkthrough, our streamlined process ensures a smooth and stress-free experience. We prioritize clear communication and meticulous attention to detail, delivering your dream home on time and within budget. Your vision, our expertise.
Our Recent Projects
Explore Our Homes
Take a look at some of our completed projects, including stunning images and detailed descriptions, demonstrating our craftsmanship and dedication to quality in every build.
The Oakmont
The Oakmont offers the epitome of modern comfort & style. With 4 bedrooms & 3.5 baths, study, & an oversized garage, this residence caters to every need w/ luxury & sophistication.
The Bradley
Experience the pinnacle of modern elegance with “The Bradley,” a stunning Colonial home. This 4 bedroom and 2.5 bath home is highlighted by an expansive family room perfect for gatherings.
Applewood Deluxe
4-bedroom, 2.5-bath home offers both luxury and functionality, featuring a spacious primary bedroom with two walk-in closets and a spa-like en-suite bath.
The Farmer Ranch
This beautiful farmhouse style ranch offering loads of space on one level. The exterior is just as stunning with composite front porch and back deck.
Meet Matthew Straight, the Exclusive Realtor for Greenstone Builders
Matthew Straight, a seasoned real estate professional and leader of The SRS Team at Coldwell Banker Realty, brings a wealth of experience and a passion for helping clientsachieve their property goals.
Working with a realtor while building a home gives you the best of both worlds. While a builder’s agent represents the builder, Matthew Straight will also represent your best interests.
Matt and his team of agents will help you navigate and understand the contract, review the builder’s plans, and negotiate on your behalf. They also provide valuable advice on upgrades, lot selection, and other aspects of the building process.

Ready to learn more or get started building your dream home?
- Email us at matthew.straight@cbrealty.com
- Call us at 978-799-3560
- Visit us at 4 Monument Sq. Leominster, MA 01453
Get Started
