Olson Home Improvement MA LLC is a small Worcester masonry and home improvement outfit run by Mark Olsen out of 63 Richmond Ave. It holds Massachusetts home improvement contractor registration 216619, which the state registry lists as active in the company's own name — one of the few credentials here that does not rest on the company's own word.
The work it puts forward is stonework and concrete: the company says it specialises in brickwork, stone walkway installation, concrete services and foundation repair, and its Angi listing offers brick and stone, masonry, concrete flatwork repair and resurfacing, brick, stone or block wall repair, and commercial brick and stone driveway and floor installation. Beyond masonry it also advertises bathrooms, tiling, wood and PVC flooring, kitchen backsplashes, decks, railings, painting and fencing.
The customer record is small — seven reviews in total, from 2023 to 2025. The masonry jobs in it went well. A December 2025 Angi customer said a brick and stone driveway was done perfectly, fast and efficiently. Two July 2023 customers described a block wall repair done quickly with the area left spotless, and a fence installation completed on time despite unforeseen obstacles, with the owner keeping them informed as things changed; that reviewer thanked "Olson and your worker also Ms Laurie" and said they had already recommended him. A third called him "very nice" and "honest", and a June 2023 customer said he stayed until the job was finished and was upfront about deviations. An October 2025 commenter on the Worcester subreddit recommended him as fair and knowledgeable.
The one bad experience is the outlier that matters, and it is not masonry. A May 2024 Angi reviewer paid $3,000 to have drywall cracks repaired and ceilings repainted, and reported a month later that most of the cracks had come back, that drywall compound was left stuck to carpets throughout the house, that ceiling spots were missed, and that paint got on a couch and left a visible stain. Drywall and interior painting are not on the company's Angi service list, which is worth weighing if that is the job you have in mind.
Before booking, get the tenure and the terms straight in writing. The company's site claims fourteen years in business while its Angi profile claims eight, and its BBB file — opened in July 2025, not accredited, graded A- specifically on how long the business has been operating — cannot settle it. The site promises warranties and around-the-clock availability; Angi's own FAQ for the same address says the business offers neither warranties nor emergency service. Ask which is true for your job, and confirm registration 216619 covers the work before any money changes hands.