303 Battery, Seattle, Washington. Situated in the heart of Belltown, 303 Battery will deliver a 15-story, 112-unit Net Zero Energy (NZE) apartment project, including 27 much needed affordable units. Five of the affordable units satisfy the city’s Mandatory Housing Affordability (MHA) requirements, and another 22 units will be income and/or rent restricted as part of the Multi-Family Tax Exemption (MFTE) program. 303 Battery will be the greenest apartment building in Seattle when it is completed. Construction is underway with an estimated completion of winter of 2020. Rock Solid currently providing consulting services to support all stakeholders in schedule management between design groups, internal field team, manufacturing team and super sub-contractor for this innovative 14 story pre-fabricated high rise apartment building.