Reimagining Workspaces for the Future
Whether you’re designing bold new interiors or transforming aging buildings for new tenants, our structural expertise helps bring ambitious workplace visions to life.
With over 100 major workplace interior and tenant improvement projects completed, Forell | Elsesser is the structural engineering partner that top architects turn to again and again. From adaptive reuse to high-performance retrofits, we bring technical clarity and creative problem-solving to every collaboration.
We’ve delivered successful workplace transformations in every context—from high-rises in dense urban centers to low-rise campuses and suburban office parks. Our experience spans headquarters build-outs, multi-tenant renovations, adaptive reuse, and straightforward interior upgrades. No matter the location or scale, we bring the same level of care, creativity, and collaboration to every project.
A partner to support your design ambitions.
- We protect your vision. From dramatic stairs to open floor plans, we help realize ambitions designs without compromise.
- We’re proactive partners. We flag constraints early, communicate clearly, and help avoid downstream surprises.
- We design for speed and certainty. We help teams meet tight budgets and schedules with efficient, compliant solutions.
- We’ve done this before. From Fortune 500 HQs to small adaptive reuse labs, our TI portfolio runs deep.


Structural Expertise for the Modern Workplace
- We move fast. We understand tenant timelines and help expedite approvals and construction.
- We help teams stay on track. Our efficient solutions help control costs, streamline permitting, and keep fast-moving workplace projects on schedule.
- We future-proof. Our designs support flexibility, evolving tech needs, and long-term performance.
- We deliver everywhere. Our tenant improvement experience spans cities, campuses, and communities across the country —and continues to grow.
Featured Projects

Klamath Ferry Boat, San Francisco, CA
17,000 sf | Adaptive Reuse Office TI
Forell | Elsesser transformed a historic 1924 ferryboat into a modern office environment. Structural modifications supported seismic upgrades, high-density file storage, and unique MEP systems—all while preserving the boat’s historic character.

Meta | MPK22, Menlo Park, CA
520,000 sf | Multi-Level Office TI
Forell | Elsesser provided structural design for this four-level open office space and mezzanine, which includes a large event space, multi-story staircases, and complex MEP integrations—all delivered under an aggressive schedule.

LinkedIn | Middlefield Campus, Mountain View, CA
732,000 sf | Multi-Building Office TI
This three-building campus features a mass timber pavilion and two six-story concrete office towers. Our scope included major tenant improvements such as feature stairs, operable partitions, and support for high-performance workplace systems.
Let’s Reinvent the Workplace Together
Whether you’re leading the design or occupying the space, we’re here to help build what’s next.
- Office Interiors
- Adaptive Reuse
- Lobby & Stair Modifications
- Seismic Retrofit & Evaluation
- Structural Strategy for Occupied Buildings