A builder in a hard hat walking through new timber framing above the cityAI Photo

About BSM

A hands-on approach to building better.

We’re a Los Angeles construction company built on craftsmanship, collaboration and a genuine commitment to our clients.

Our Story

Built on experience. Driven by people.

Rooted in Los Angeles, BSM LLC builds and renovates homes that reflect the way people truly live in Southern California.

From the first concept to the final finish, we take a hands-on approach—balancing technical expertise with a designer’s eye for proportion, flow, and detail.

Our team has led projects ranging from custom single-family residences to multi-unit developments, blending new ideas with time-tested craftsmanship. We see each project as a collaboration—working closely with homeowners, architects, and designers to translate vision into reality while respecting both budget and context.

What sets us apart is our focus on integrity and intention. We don’t just aim to complete a project—we aim to create spaces that feel grounded, livable, and enduring. For us, building isn’t only about structure; it’s about shaping environments that bring lasting comfort and connection.

A breakfast bar with oak stools and pendant lights, in the home BSM built in Arcadia
A builder walking through new timber framing at golden hour, the foothills behindAI Photo

Meet the Team

The people responsible for the work.

BSM is led by Brian Marinoff, who stays involved from the first conversation to the final walk-through. Our team includes experienced project managers, skilled crews and trusted trade partners who share our standards and our commitment to doing things the right way.

  • Brian’s portrait

    Brian Marinoff

    Principal

  • Jake’s portrait

    Jake

    Project Manager / Superintendent

Our Values

A better building experience.

The foothills above Altadena, with homes among the treesAI Photo

Commitment to Our Community

Supporting stronger communities.

We’re proud to be part of the Altadena community, helping homeowners rebuild and create what’s next. Our team brings experience, care and attention to every home and project we take on in the area and across Los Angeles.

AI Photo

Let’s build what’s next

Have a project in mind?

We’d love to hear about it.