Step Into Your New Daily Ritual
Luxury backyard studios, ADUs & custom home additions — built on-site across the Bay Area.
Luxury backyard studios, ADUs & custom home additions — built on-site across the Bay Area.
Fully finished interiors, premium windows and doors, and customizable layouts. Swipe to view models. Prefer a larger build? We also design & build ADUs and home additions.
Need more space than a studio? We design and build Accessory Dwelling Units (ADUs) and high-end home additions with the same Terra Buildr craftsmanship and on-site construction.
Premium materials and fully finished interiors. Pricing reflects on-site construction in the Bay Area.
From $550/sq ft
120 sq ft minimum
From $550/sq ft
120 sq ft minimum
From $550/sq ft
300 sq ft minimum
From $650/sq ft
600 sq ft minimum
With our partner RenoFi, you can bring your project to life now and pay over time. RenoFi home improvement loans consider your home’s after-renovation value to unlock flexible terms and competitive rates.
Quick eligibility check, no hidden fees, and financing that fits your project timeline.
Learn About RenoFi— Sarah L., Hillsborough
We combine architectural detail with on-site craftsmanship to deliver spaces that elevate your day.
2x6 framing, R-23 insulation, Level 5 drywall, premium flooring, and black-finish Low-E windows.
Electrical with recessed lighting, siding and paint, finished interiors — move-in ready.
From $550/sq ft with model-specific minimum sizes.
Focused on Bay Area cities like Atherton, Hillsborough, Piedmont, and more.
Most Bay Area cities require permits for backyard studios and ADUs. We help you navigate requirements and can coordinate with your city.
Typical on-site build time is 4–8 weeks after design sign-off, depending on site conditions and model. ADU and addition timelines vary by scope.
Insulation, drywall, electrical with recessed lights, windows/doors, exterior siding, and interior finishes. HVAC optional. ADUs/additions can include kitchen and bath packages.
Yes — choose size, window/door placement, and finishes to match your lifestyle.
Use the RenoFi calculator and pre-qualify. We’ll guide you through the process alongside your design.
Prices start at $550 per sq ft (model minimum sizes apply). ADU/addition pricing depends on scope and site conditions.
Across the Bay Area — Atherton, Hillsborough, Los Altos Hills, Orinda, Lafayette, Tiburon, Menlo Park, Danville, Mill Valley, Berkeley, Walnut Creek, and more.