Dave Bates, AIA, CSI

Senior Architect

Seattle, Washington

> Building Enclosure Design
> Water Intrusion Source Identification
> Construction Defect Litigation
> Construction Observations

David has been with OAC since 1991, over which time he has developed a strong instinct for identifying sources of water intrusion. He has also participated in construction defect cases, detailing of building enclosure for new and existing construction, and keeps contractors on their toes with thorough construction observations.  David was the founding chair of the Seattle Building Enclosure Council and currently chairs the Building Enclosure, Technology and Environment Council’s Marketing and Outreach Committee.  Away from building enclosures he enjoys photography, visual humor, writing and exploring small towns and industrial areas.

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Blog Posts

Jeff Jurgensen & Jonathan Miller Receive Community Leadership Awards

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

Blog Posts

OAC's Constructability Review

One of the biggest positive impacts OAC can have for … Read more >

Blog Posts

OAC Services Tops List of 100 Best Companies to Work For in Washington State

If you aren’t in the architecture, engineering and construction industry, … Read more >


Todd Smith

PRACTICE AREAS > Project management > Construction management > Scheduling … Read more >


Chris Priest

Joining OAC in 2017 as Marketing Coordinator, Chris has more … Read more >


Laurie Guluarte

PRACTICE AREAS > Program management > Project management > Construction … 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.