Adaptive Reuse & Tenant Improvement Lessons Learned

April 17, 2026

Lessons Learned

Repositioning and tenant improvement (TI) projects are often expected to move quickly. After all, the building already exists. In reality, these projects can be some of the most complex to execute. Between unknown existing conditions, maintaining operations, compressed timelines, and jurisdictional requirements, even well-planned projects can face unexpected hurdles.

With nearly 100 years of experience delivering commercial construction projects throughout the Southwest, our team has seen firsthand where challenges tend to arise—and how thoughtful planning can make all the difference.

Here are a few of the most common areas that require extra attention on repositioning and TI projects.

The AJ Kirkwood Headquarters renovation was awarded the state of California's prestigious Governor's Historic Preservation Award in 2021.

1. Design Documents

Incomplete construction documents are one of the most common causes of schedule impacts. Specifications play a critical role in identifying long-lead materials, evaluating product availability, and allowing subcontractors to perform proper due diligence. Oltmans Construction Co. can identify risks, recommend substitutions, and align your schedule with real-world material availability if engaged early during the construction document development submittal process.

2. Local Jurisdiction Experience

Every local jurisdiction is different, and understanding the relative protocols, permitting workflows, inspection timelines, and agency coordination can significantly impact your project if not properly anticipated. These requirements can directly affect everything from concrete pours to material deliveries. Oltmans Construction Co. has a long-standing history in Southern California’s commercial construction marketplace, which may allow your project to avoid bottlenecks, execute realistic schedules, and avoid avoidable delays.

3. Existing Conditions

Unlike new construction, tenant improvement projects almost always involves unknown conditions, whether it be behind walls, above ceilings, or below slabs. Yet many projects move forward with pricing based on assumptions rather than investigations, leading to scope gaps and budget overruns. Oltmans Construction Co.’s early involvement during preconstruction can reduce risk and improve cost certainty by verifying existing conditions before finalizing pricing—especially for GMAX and accelerated deliveries.

Repositioning of an existing office building into gallery spaces and classrooms for ArtCenter College of Design's South Campus building in Pasadena, CA.

4. Tenant and Neighbor Coordination

Occupied buildings introduce another layer of complexity. Noise, vibration, access disruptions, safety considerations, and utility shutdowns can create major problems if not properly managed. Oltmans Construction Co.’s project management teams are adept at conducting thorough existing condition assessments and collaborating with clients and stakeholders from the outset to define procedures for advance notification, defined work windows, noise mitigation strategies, and phasing to keep the project moving while maintaining positive tenant relationships. We strive to be good neighbors for our tenants.

5. Early General Contractor Collaboration

Many owners bring their GC on board after major decisions have already been made. This limits the contractor’s ability to add value beyond execution. As a strategic partner, on complex or multi-phased tenant improvement projects, Oltmans Construction Co. can significantly improve the project’s progress by providing constructability review, cost control, schedule reliability, and help mitigate risk. A collaborative approach leads to fewer surprises, better alignment, and smoother execution.

Oltmans Construction Co.’s in-house team of tenant improvement estimators, project managers, and long-tenured field professionals brings decades of technical know-how and a dedicated team that is ready to partner with you to tackle your next project. Completing thousands of projects in Southern California, we have encountered—and solved—virtually every renovation challenge imaginable.

Other Adaptive Reuse Projects:

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