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Modern ADU Living
Guest houses and multi-generational suites.
Modern ADU Living, designed and built as one.
Sophisticated guest houses, in-law suites, and multi-generational living. Architecturally matched and built for flexibility.
What's included
ADU design and build
Multi-generational suites
Kitchenettes
Accessible, aging-in-place design
Permitting guidance
Smart + Wellness
Aging-in-place luxury with smart climate and access.
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Service Areas
Capstone plans additions, ADUs, and garage conversions across Greater Boston and Norfolk County, including Foxborough, Wellesley, Newton, Needham, Weston, Brookline, Dover, Medfield, Westwood. We bring the same design-build discipline—clear scope, transparent planning, and refined finish quality—to every community we serve.
Explore an ADU.
Book a private design consultation. We'll explore your goals, your home, and what's possible.
Schedule a Design Consultation →Typically a 45-minute conversation. No pressure, no obligation.