General contractors, architects, landlords and tenants hire Engineous Group for mechanical, electrical and plumbing engineering on tenant improvements across Southern California: retail stores, offices, medical suites and restaurants inside existing buildings. Much of our work is multi-site, where the same tenant needs consistent, permit-ready drawings across many locations.

Request a consultation → or call (626) 696-3850

Tenant improvement experience

  • AT&T: centers throughout California and Arizona
  • Vitamin Shoppe: 20 sites in Southern California
  • Speedy Cash: 12 sites in Southern California
  • West Wilshire office and medical buildings
  • Corporate tenant development in El Segundo

We have also been the primary MEP engineer for Unibail-Rodamco-Westfield since 2009, with over 30 projects completed.

See more on our tenant improvement projects, retail projects and Westfield projects pages.

What makes tenant improvements different

A tenant improvement is engineered around a building that already exists. The new layout has to work with the base building’s HVAC capacity, electrical service, and plumbing risers, and the shell’s documents are not always current. That is why a TI scope usually starts with a site visit and a review of existing conditions before design begins.

A typical TI scope covers:

  • Mechanical: HVAC zoning and distribution for the new layout, tied into the existing system or new rooftop equipment
  • Electrical: panel and circuit capacity for the new use, lighting, and power
  • Plumbing: restrooms, break rooms, and any process or tenant-specific fixtures
  • Fire sprinkler: head relocation and modifications coordinated with the new ceiling layout, through our fire protection engineering
  • Title 24: energy compliance for altered systems and lighting

Multi-site programs

For national and regional tenants, consistency matters as much as speed. The same engineering standards applied site after site mean fewer surprises in plan check and fewer field changes. Our multi-site work for retail, restaurant and service tenants spans dozens of locations across Southern California and beyond.

Where we work

Based in Pasadena, we engineer tenant improvements across Los Angeles, Orange County, San Diego, the Inland Empire and the rest of California.

To get a quote

Send the architectural set and the project address. Those two items are usually enough for us to define scope and send a fee.

“Whether it’s a large national account, or a complex developer project, Engineous Group brings creative and expedient solutions with a high level of care to a demanding environment.”

Nathan Adkins
Retail Design Collaborative

Pricing a tenant improvement?

Call us directly, or send the plans and we will get back to you with scope and fee.

Call (626) 696-3850
Request a Consultation

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