Keystone Development Corporation

Keystone Development Corporation is a Marlborough, Massachusetts real estate development and construction company that builds custom single-family homes alongside multi-family and commercial projects, and says it manages the whole development process from land acquisition through permitting and construction. Its own site states the company and its affiliates have been developing real estate since 1975, and names Michael Staiti and Rick Olstein as its owners. The Commonwealth's registry confirms an active Massachusetts Home Improvement Contractor registration, number 193497, held of record by Keystone Development Corp — the business's own name. Its Better Business Bureau file carries an A+ grade, though the same profile states the business is not BBB accredited and lists a business start date of December 2001. The customer record is very thin and what exists is unfavourable. Google publishes a 3-star average from just two ratings, and the single retrievable review, written in 2022, is a detailed one-star account from a would-be buyer of a to-be-built home who alleged the co-owner "broke contractual law and engaged in an unethical process". Nothing in the evidence answers that account, and there is no body of positive customer feedback on file to weigh against it. Where the firm does appear in print is as a builder and developer rather than through customer reviews: Boston Magazine credited Keystone Development as the contractor on a custom Lincoln, Massachusetts home published in April 2025, and the Hopkinton Independent reported the company as the applicant on a Chestnut Street subdivision before the town's planning board. This is a builder to approach as a development and custom-build firm rather than a repair or remodelling contractor. Anyone considering them should ask directly about the 2022 purchase dispute, confirm the HIC registration and any construction-supervisor credential with the state, and reconcile the "since 1975" history on the website against the 2001 corporate start date the BBB file records.