Karen Sebastian LLC

Karen Sebastian LLC is a Waltham landscape architecture practice whose site says it combines landscape architecture, horticulture, and project implementation to create individualized designs. Houzz lists residential landscape design, master planning, planting design, construction documents, and on-site supervision. A 2022 Houzz review described an eight-month wait for a small-yard design sketch, another year before planting, and final costs 2.5–3 times the estimate. Before booking, homeowners may want to agree on schedule milestones and how estimates will be updated. Houzz lists Massachusetts landscape architect license 1401. BuildZoom labels that license active but shows two expiration dates, January 2015 and January 2026, so confirm its current standing with the state board. The firm may suit homeowners seeking residential landscape planning who want to set clear timing and cost expectations up front.