Principal Builders, Inc.

Principal Builders, Inc. Tenant Improvement General Contractor headquartered in San Francisco. We specialize in high-end comm Corporate Interior Specialists

Principal Builders Inc.

is a customer-focused, team-oriented, collaborative general contracting company specializing in corporate interiors for the Fortune 1000. Founded in 2003 by a group with a vision to change the construction industry and a combined 150 years of experience, Principal Builders is a Bay Area general contractor specializing in tenant improvements. With offices in San Francisco and San Jose, our Fortune

1000 customers range from financial and law firms to technology, advertising, and health & wellness businesses. Voted as one of the Bay Area’s Fastest Growing Companies and One of the Best Places to Work
in the Bay Area over the past 12 years, Principal Builders attracts and retains the industry’s best and brightest people. We strive to do great work for exceptional customers – and have some fun along the way. Our customers tell us we’re different because whatever the situation, we turn challenges into solutions. Our Philosophy

We think like our customers. What’s important to them is important to us. The more we know, the better we are. We ask a lot of questions, but not just any questions - the right questions - so that we can provide useful answers that ultimately lead to the right solutions. The best plans and strategies are the ones that are rooted in reliable processes. Challenges and constraints always help us see things in new ways. There is a difference between predictable unknowns and unpredictable unknowns. We know how to anticipate and manage both. We view responsibility as a good thing; Knowing more and inserting ourselves into every aspect of the project places more responsibility on us. We want this accountability. With control we can predict outcome. With predictability, we can exceed expectations. This is what we do.

Still pinching ourselves! A big thank you to the  for this honor and to our amazing partners for their seamless collabor...
05/17/2024

Still pinching ourselves! A big thank you to the for this honor and to our amazing partners for their seamless collaboration. Head over to our bio to read the full article!

Client: Greylock Partners
Architect:
Photographer: Eric Laignel


Reflecting on this year’s IIDA Honor Awards, we were thrilled when four of our projects were selected as finalists. It w...
04/19/2024

Reflecting on this year’s IIDA Honor Awards, we were thrilled when four of our projects were selected as finalists. It was an honor collaborating with creative minds on these endeavors, and we’re immensely proud of the final results!


Client: Greylock Partners
Architect:
Photographer: Eric Laignel


Client: Confidential Client
Architect:
Photographer:


Client: Norwest Venture Partners
Architect:
Photographer: Eric Laignel


Client: Confidential Client
Architect:
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Crafting spaces to let minds ignite. We love how Argonaut’s new office turned out! •Client: ArgonautArchitect: Photograp...
03/29/2024

Crafting spaces to let minds ignite.
We love how Argonaut’s new office turned out!

Client: Argonaut
Architect:
Photographer:


Closing the week on a stylish note with finishing touches that make a bold impact.   •Client: Emergence Capital Architec...
02/02/2024

Closing the week on a stylish note with finishing touches that make a bold impact.

Client: Emergence Capital
Architect:
Photographer:

Client: Confidential Client
Architect:
Photographer:

Client: Norwest Venture Partners
Architect:
Photographer: Eric Laignel


Craving a cozy corner to work from with this weather! ☕️Where’s your dream workspace?  ••Client: Confidential ClientArch...
01/19/2024

Craving a cozy corner to work from with this weather! ☕️Where’s your dream workspace?


Client: Confidential Client
Architect: .sky
Photographer:

Client: Emergence Capital
Architect:
Photographer:

Client: Argonaut
Architect:
Photographer:


Happy New Year! We are excited for all the upcoming projects that this year will bring. Here is a look back at some of o...
01/05/2024

Happy New Year! We are excited for all the upcoming projects that this year will bring. Here is a look back at some of our favorites in 2023.


Client: Norwest Venture Partners
Architect:
Photographer: Eric Laignel

Client: Argonaut
Architect:
Photographer:

Client: Emergence Capital
Architect:
Photographer:

Client: Confidential Client
Architect:
Photographer:

Client: Confidential Client
Architect:
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Client: Confidential Client
Architect:
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Client: Farella Braun + Martel
Architect:
Photographer:

Happy New Year! We are excited for all the upcoming projects that this year will bring. Here is a look back at some of o...
01/05/2024

Happy New Year! We are excited for all the upcoming projects that this year will bring. Here is a look back at some of our favorites in 2023.


Client: Norwest Venture Partners
Architect:
Photographer: Eric Laignel


Client: Argonaut
Architect:
Photographer:


Client: Emergence Capital
Architect:
Photographer:


Client: Confidential Client
Architect:
Photographer:


Client: Confidential Client
Architect:
Photographer:


Client: Confidential Client
Architect:
Photographer:


Client: Farella Braun + Martel
Architect:
Photographer:


While we love seeing our clients settle into their new space, saying goodbye is never easy. Thank you to our incredible ...
12/13/2023

While we love seeing our clients settle into their new space, saying goodbye is never easy. Thank you to our incredible client and project team for making this journey memorable.



Imagining a Friday happy hour at one of these beautiful offices! If you had to pick, which spot would you choose? •••Cli...
12/01/2023

Imagining a Friday happy hour at one of these beautiful offices! If you had to pick, which spot would you choose?



Client: Confidential Client
Architect:
Photographer:



Client: Argonaut
Architect:
Photographer:



Client: Emergence Capital
Architect:
Photographer:



Client: 8VC
Architect:
Photographer:



When you see your project at night and it’s so beautiful that it stops you in your tracks. •••Client: Baker Pacific Grou...
11/17/2023

When you see your project at night and it’s so beautiful that it stops you in your tracks.



Client: Baker Pacific Group
Architect:
Living Wall Contractor: horticulture





Wallpaper: The perfect pop of character that can transform any space! •••Client: ConfidentialArchitect: Photographer: ••...
11/02/2023

Wallpaper: The perfect pop of character that can transform any space!



Client: Confidential
Architect:
Photographer:



Client: 8VC
Architect:
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Client: Asana
Architect:
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Keep finding ourselves coming back to this one. Kudos to the project team.•••Client: ConfidentialArchitect: Photographer...
10/19/2023

Keep finding ourselves coming back to this one. Kudos to the project team.



Client: Confidential
Architect:
Photographer:



Address

320 Ritch Street
San Francisco, CA
94107

Opening Hours

Monday 9am - 5pm
Tuesday 9am - 5pm
Wednesday 9am - 5pm
Thursday 9am - 5pm
Friday 9am - 5pm

Telephone

+14154341500

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