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About Us
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Construction Law for
Complex Projects and Disputes

For more than 50 years, Seifer, Yeats, Zwierzynski & Gragg LLP has advised public and private clients on construction contracts, projects and disputes.

PRACTICE AREAS
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PRACTICE
AREAS

Construction & Design

Construction Contracts

Bid Disputes & Protests

Construction Litigation

Government & Public Contracts

Lien, Bond & Payment Claims

Real Estate

Insurance Coverage

OUR TEAM

Steve Zwierzynski

PARTNER

Steve advises general and specialty contractors on contract review, bid protests, claims negotiation and litigation. His more than 30 years of experience includes public and private projects involving schools, hospitals, office buildings, technology facilities, and industrial and commercial construction.

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​His practice also includes mediation and arbitration of construction and real estate matters.

Contact:

(503) 594-7448

sz@seifer-yeats.com

Dan Gragg

PARTNER

Dan represents contractors, owners, developers, design professionals and suppliers in construction and design law, public contracting, and related contract and commercial disputes. His work includes contract formation, bid protests, payment and bond claims, construction liens, defects and claims resolution. Dan also serves as a mediator and arbitrator in construction and commercial disputes.

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​With the firm since 1997, his experience includes major public facilities, transportation and infrastructure projects, industrial facilities, and commercial and residential development. He is a frequent industry speaker, a contributing author of Construction Law in Oregon, and a former chair of the Oregon State Bar Construction Law Section.

Contact:

(503) 594-7446 

gragg@seifer-yeats.com

Sherri Martinelli

PARTNER

Sherri represents owners, developers, contractors, design professionals and sureties in construction and real estate matters. Her work includes contract formation and performance, litigation, public contracts, insurance issues, and delay and defect claims.

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​She advises clients on legal issues arising before, during and after project completion.

Contact:

(503) 594-7447 

sm@seifer-yeats.com

Josh Copeland

Associate

Josh advises owners, contractors, subcontractors and suppliers on construction, public contracting and related commercial disputes. His work includes contract negotiation, payment and delay claims, and litigation.

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​His experience in private practice and as in-house counsel for a general contractor informs a practical approach to clients’ contractual obligations, business priorities and dispute resolution.

Contact:

(503) 594-7444 

jc@seifer-yeats.com

Ramona Bringas

PARALEGAL

Contact:

(503) 594-7445

rb@seifer-yeats.com

CONTACT

CONTACT
 

8 N. STATE ST., SUITE 301 

LAKE OSWEGO, OR 97034 


Tel:  (503) 223-6740

Click Here to Find Us

Contact our firm to discuss your construction law needs.

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© 2026 SEIFER, YEATS, ZWIERZYNSKI & GRAGG LLP

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