Custom homes, estate renovations, and ADUs in one of LA’s most sought-after Westside neighborhoods. From Mandeville Canyon estates to San Vicente traditional homes.
Request a Free Project AuditBrentwood spans from the flat, tree-lined streets near San Vicente Boulevard to dramatic canyon properties in Mandeville and Sullivan Canyon. This range means building in Brentwood requires expertise in both standard LADBS flat-lot permitting and complex hillside ordinance compliance. Hexagon’s design-build approach handles both seamlessly.
Ground-up homes from $450–$700+ per square foot. We build modern farmhouses on the flats, contemporary canyon homes, and traditional estates — all designed by our in-house architects and built by our own construction team.
Brentwood’s housing stock ranges from 1940s ranch homes to 1990s traditional estates. We transform outdated layouts into open, modern living spaces while preserving the neighborhood character that makes Brentwood special.
Brentwood’s generous lot sizes make it ideal for ADUs. We design detached guest houses, garage conversions, and junior ADUs that add living space and value while complementing your main home’s architecture.
Canyon properties in Brentwood face wildfire risk. We rebuild fire-damaged homes with modern fire-hardened materials, improved defensible space, and upgraded systems — coordinating insurance scopes and expedited LADBS permits.
New construction in Brentwood typically ranges from $450 to $700+ per square foot. Flat lots near San Vicente tend toward the lower end, while canyon properties with grading and retaining wall requirements cost more. A 4,000 sq ft home might range from $1.8M to $2.8M+ in construction costs.
Brentwood falls under the City of Los Angeles (LADBS) jurisdiction. Standard plan check takes 4–8 months for new construction. Canyon properties subject to the Hillside Ordinance have additional requirements for grading, retaining walls, and environmental review.
Parts of Brentwood — particularly Mandeville Canyon, Sullivan Canyon, and properties backing up to the Santa Monica Mountains — are in Very High Fire Hazard Severity Zones. New construction in these areas must meet Chapter 7A fire-hardening standards.
Yes. California state law allows ADUs throughout Brentwood. The neighborhood’s larger lot sizes (often 7,500+ sq ft) provide ample room for detached ADUs. Costs typically range from $200,000 to $475,000+ depending on size and finish level.
We work throughout Brentwood including the flats along San Vicente, Mandeville Canyon, Sullivan Canyon, Brentwood Glen, Brentwood Circle, and Crestwood Hills. Each sub-area has its own character and building considerations.
Schedule a free project audit. We’ll review your property, discuss your vision, and provide a realistic scope and budget.
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