Monsen Collins Builders

Monsen Collins Builders is a construction company in Saratoga, CA, specializing in custom home building, luxury remodeling, kitchen and bathroom renovations, home additions, and accessory dwelling units (ADUs). The company serves clients across Saratoga, Los Gatos, Monte Sereno, and the broader Silicon Valley region. With a 5.00 rating and consistently high reviews on Houzz, the business is recognized for excellence in work quality, communication, and value. Their services include architectural design-build homes, wood and crystal cabinetry, and European windows and doors, all delivered with a focus on craftsmanship and client collaboration.

The company emphasizes collaboration, transparency, and accountability as core principles, guiding every project from initial consultation to completion. Founded by Cassady Monsen, who grew up in residential construction with a family legacy in the trade, the team includes Wei-Ken Seto, who joined as Executive VP and investor after being a satisfied client. Their process integrates personalized architectural design, premium material selection, master craftsmanship, and sustainable building practices. Projects such as the Marshall, Solita, and Elm Park homes exemplify their commitment to precision, refined detailing, and luxury design. The company has completed over 200 successful transformations, with a focus on enhancing both lifestyle and property value.

Located on Saratoga Sunnyvale Road, the business sits just a short distance from Saratoga Avenue, the Saratoga Fire Station, Saratoga Creek, the Art Students' Atelier, and The UPS Store, placing it within a well-established community corridor. The proximity to these landmarks reflects its integration into the local fabric of Saratoga.

Monsen Collins Builders is known for its consistent excellence, long-standing reputation in the Bay Area, and a proven track record of client satisfaction. The company’s well-documented online presence and optimized website reflect a business that is both accessible and trusted. Their award-winning craftsmanship and deep roots in residential construction have solidified their standing as a premier builder in the region.

As a leader in custom home and renovation services, Monsen Collins Builders shapes the architectural character of Saratoga with enduring quality and thoughtful design.