Information about HASCO and coronavirus (COVID-19), including office closures.
Equal Housing Opportunity (425) 290-8499 (425) 290-8499
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Professional Services

HASCO issues requests for proposals (RFPs) for some professional services scopes on an as-needed basis. HASCO also issues requests for qualifications (RFQs) for ongoing contracts for some professional services scopes.

If you are interested in providing appraisals, market studies, property physical conditions assessments, environmental services, and/or intrusive investigation services to HASCO, you can register for HASCO’s Consultant Rosters through the Municipal Research Service Center (MRSC) at Instructions for registering are available for download (to the right). Please contact 206-625-1300 or for questions on the MRSC. Please note that if you have already provided your information to HASCO in the past for these services, you will still need to register on the MRSC website.