Forensic Architecture & Engineering

OAC’s Forensic Architecture and Engineering team consists of licensed professionals who investigate building materials, systems and components that do not function as intended or have failed. We work to determine and isolate causes of failure to improve building systems performance, and to assist owners, attorneys and insurance carriers by utilizing sound scientific theory and hands-on experience to settle disputes. Our FAE team is focused on improving where people live, work, learn and play.

Featured Project

Carpenters Tower


After a piece of exterior concrete separated from the façade of a 25-story apartment high-rise in Seattle and fell to the sidewalk below, OAC was hired to conduct an investigation of the building’s concrete exterior and evaluate the cause of extensive cracking and rust bleeding from the post-tensioned (“PT”) tendon pockets.

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Seattle, WA

Direct Contact

Lee Dunham


Contact Lee Dunham at 206.268.0965 for more information on Forensic Architecture & Engineering.

Forensic Architecture & Engineering

Construction Defect Litigation

OAC’s architects and engineers work with attorneys on both sides of disputes involving construction defects in the built environment.

Property Insurance Claim Analysis

We regularly map and analyze damage to buildings at the center of disputes between first party property insurance carriers and / or insureds.

Expert Witness Testimony

OAC’s record of reasonable and reliable expert testimony includes depositions, hearings, arbitrations and trial.

Hygrothermal Modeling

A model analysis of walls and roofs that determines moisture drive through the assemblies. Modeling allows for the design team to determine how the building wall wets and dries and if the assemblies perform without accumulation which leads to organic growth and mold.

OAC Feed

Blog Posts

OAC Volunteers at Mary's Place's Holly Jolly Holiday Party

While the holidays are often thought of a time to … Read more >

Blog Posts

Jeff Jurgensen & Jonathan Miller Receive Community Leadership Awards

Congratulations to Jeff Jurgensen and Jonathan Miller for receiving Community … Read more >


Project Manager - Olympia, WA

At OAC, we do what we love in the service … Read more >


Project Coordinator - Olympia, WA

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Executive Assistant - Seattle, WA

Who We Are At OAC, we do what we love … Read more >
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Project Engineer/Assistant Project Manager – LWSD

At OAC, we do what we love in the service … Read more >

Construction Management. Architecture. Engineering.

OAC has a history of success with specialized design and construction because we love what we do. We serve our clients as collaborators, and we design and manage projects that improve where people live, work, learn and play. Because of this, we’ve gathered a superlative staff of professionals who share our core values, and our vision – do what we love in the service of people who love what we do.