MainStay Landscape Inc.

MainStay Landscape, Inc. is an Osterville, MA design-build landscaping company founded in 2015 by Jay MacMullan, who brought a prior 25-year career in the Green Industry to the business. The firm is owner-operated by MacMullan and holds an active Massachusetts Home Improvement Contractor license (HIC 197194) registry-verified as held by MainStay Landscape Inc. Self-reported crew credentials include a Massachusetts Certified Landscape Professional designation and an ICPI paver-installer certification, corroborated on both the company's own site and its Houzz profile, plus a self-reported Accredited Organic Land Care Provider credential and a Massachusetts Certified Arborist on staff. The company serves Cape Cod, Greater Boston, and southern New England, with self-reported project work in Osterville, Centerville, Cotuit, Cambridge, Wellesley, and Westwood. Customers who hired MainStay describe detailed, well-executed design-build and fine gardening work. In a 2016 review, a client described a 480-square-foot bluestone patio with a Pennsylvania stone retaining wall built around a mature cherry tree, delivered on a two-week schedule with accurate, straightforward pricing. Another 2016 client credited the company with reclaiming an eroded, invasive-plant-choked beachfront and tripling blooms on existing plantings within a single season. In February 2026 reviews, clients again called the crew reliable and easy to work with on multi-home design-build projects. Two more recent Google reviews raise concerns about crew conduct and pacing. In a January 2026 review, a visitor to a job site (who states they never hired the company) described crew leaders speaking disrespectfully about their own employees. A December 2025 reviewer described lackadaisical on-site management and a project that ran longer than expected. Both are one-star and specific. Google's own displayed average sits at 4.3 stars from 12 ratings and Houzz shows 5.0 stars from 5 ratings — both higher than the detailed complaints alone might suggest, since most raters on those platforms left no written account. MainStay is a strong fit for larger estate-scale design-build, fine gardening, and masonry/hardscaping projects on Cape Cod and in the Boston/Metro West corridor, backed by a verified state contractor license and a decade-plus track record. Anyone booking should ask directly about current crew supervision and project-timeline practices, given the two recent accounts describing management and pacing concerns.