Prime Multi-Property - Solano, and Irwin

851 Irwin Street, San Rafael, CA 94901

Property Information

  • For Sale $11,977,000
  • Property Type Office
  • Property Size 48,724 SF
  • Cap Rate % 7.8
  • NOI / YR $938,707.00
  • Property Tenancy Multi-Tenant
  • Building Class B
  • Year Built 1966
  • Date Updated Jun 18, 2026

Description

NAI NorCal is pleased to exclusively offer the opportunity to acquire a two-property office portfolio strategically located across the San Francisco Bay Area's most dynamic submarkets. This fully stabilized, 100% occupied portfolio totaling ±48,742 square feet and 59 units represents a rare opportunity to acquire institutional-quality assets in Berkeley and San Rafael — two of the region's most sought-after office markets.

The portfolio has been substantially upgraded under current ownership with comprehensive capital improvement programs completed across both properties, including HVAC modernization, interior renovations, security enhancements, and building system upgrades. These recent investments have positioned the portfolio for continued strong performance with minimal near-term capital requirements while creating significant rent growth upside as leases roll in each market.

Each property benefits from exceptional location fundamentals: the Solano Avenue asset sits in Berkeley Hills' historic main thoroughfare with a Walker's Paradise Score of 94/100; and the Irwin Street building provides unmatched regional connectivity adjacent to Highway 101 and the San Rafael Transit Center.

With current in-place rents averaging $3.21/SF/month — well below the market rate of $4.30/SF/month — diversified professional tenancy across 59 units, and 100% occupancy, this turnkey investment opportunity offers investors immediate cash flow stability combined with substantial 34% rent growth upside through strategic lease management and operational efficiency.

Highlights

  • Invest in a 100% occupied two-property portfolio and tap into 34% rent growth upside potential and recent capital improvements.
  • The Solano Professional Building is an 18,819 SF three-story mixed-use asset with 19 office suites and diversified professional tenancy.
  • Positioned for growth, both assets have newly modernized turnkey suites and common areas, recent capital improvements, and stabilized occupancy.
  • Spread across walkable and vibrant Bay Area urban neighborhoods with easy connections to transit, commuting routes, and amenities including a Walker's Paradise Score of 94/100 along Solano Avenue.
  • 851 Irwin Street is a 29,923 SF three-story office building with professional offices, community organizations, and creative users as tenants, ideally situated adjacent to Highway 101 and the San Rafael Transit Center.

Contacts

Location

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