Verified record
Typical Greater Boston range for this kind of work, from regional averages — not a quote from Keystone Development Corporation. Use it to sanity-check bids, then get the real number in writing.
Estimated range
$23,000 – $35,000
Typical remodeling project around $29,000
Keystone Development Corporation works at the developer's end of homebuilding: custom single-family houses, multi-family and commercial projects, and, by its own account, the whole arc from buying the land through construction. Michael Staiti and Rick Olstein own the Marlborough company, which says it and its affiliates have been developing real estate since 1975. Boston Magazine credited Keystone Development as the contractor on a house designed by Flavin Architects in April 2025. In Hopkinton, local coverage in September 2023 followed the company's proposed subdivision at 0-24 Chestnut Street, where findings had to go to a second vote, and the Hopkinton Independent reported in July 2024 that Vito Colanna spoke on the company's behalf as the applicant. The state's contractor register carries a Massachusetts home improvement contractor registration, #193497, under Keystone Development Corp. Its Better Business Bureau page carries an A+, and the company calls itself an Earthcraft House builder. The sharp note comes from a March 2022 Google review by a couple who had taken an interest in a to-be-built property: they wrote that the company, through co-owner Rick Olstein, broke contractual law and engaged in an unethical process. That is one buyer's account of one deal, and it is worth putting to the company directly. On Google it sits at 3 stars from two ratings. Keystone suits someone commissioning a new house or a development project rather than a remodel. Have a lawyer read the purchase-and-build agreement line by line before you sign, ask for the addresses of two or three recently finished homes, and get the schedule and the change-order terms in writing.
“Photo by Nat Rea Photography / Architect: Flavin Architects. Contractor: Keystone Development”
“Vito Colanna spoke on behalf of the applicant, Keystone Development Corporation.”
“A vote needed to be retaken on the findings regarding a proposed subdivision at 0-24 Chestnut Street by Keystone Development Corporation.”
“A vote needed to be retaken on the findings regarding a proposed subdivision at 0-24 Chestnut Street by Keystone Development Corporation.”
“Local Roots first proposed the new store in June 2020 with backing from Marlborough-based Keystone Development Corporation co-founders Michael Staiti and Rick Olstein.”
Our tale is a cautionary one. In short, Keystone Development Corporation, by way of co-owner Rick Olstein, broke contractual law and engaged in an unethical process. And admits it. My husband and I took an interest in a to-be-built property. We had been looking for quite some time and when we saw the neighborhood, land and home plans, we felt like we could see ourselves living there and moved forward with due diligence. We requested to meet the builder and to see a recently completed home. The builder requested an offer before agreeing to these requests. We made an offer at asking and the offer was accepted and signed by Rick Olstein. In the Commonwealth of Massachusetts, this offer is now a legal and binding agreement. We were set to meet Rick and see one of his homes the following day. We toured the recently built home and proceeded to a coffee shop to start, what we thought would be, the beginnings of a positive working relationship as we build our new home. Instead, Rick surprised us by saying he would not be adhering to the terms of the offer (which, again, is a legal and binding agreement). We discussed Rick’s concern and despite not having any legal reason to renegotiate, we agreed to make amendments in good faith. In the end, our efforts to reasonably negotiate were for not. A few days later, Rick’s attorney told our attorney that everything we had agreed upon to date was being rescinded, that negotiations had ceased and gave us the option to walk away or sue as we could enforce the offer and legally force him to build the home (the admission part). The way this transaction unfolded and the way we were treated was abhorrent. We weren’t about to embark upon building a home with someone so unethical and who couldn't communicate. We walked away and likely dodged a bullet. We have no idea what happened or what caused negotiations to break down. In short, we would not recommend doing business with Keystone. Hopefully our story can help other well-intentioned home buyers.
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1 change recorded — last scanned Aug 15, 2026.
Detailed workmanship5.0
On-time framing4.8
Finish carpentry4.7
Custom bookshelves, window seats, and staircases4.3
Registry-verified license1.9