Rainbow Investment Co. Breaks Ground on 52,600 SF Medical Office Development in La Mesa, California
Why this matters
Office continues to trade in two distinct markets: trophy assets in walkable submarkets that are leasing at or near record rents, and commodity Class B and C buildings where the basis is still resetting. Underwriting on the latter has moved toward replacement-cost-minus, with credit underwriting now leaning on tenant covenant and remaining lease term rather than mark-to-market expectations. San Diego life sciences vacancy remains the lowest in the major life-science clusters, and multifamily fundamentals continue to be supported by a coastal supply ceiling. For LP-positioned capital, the read-through is that the bifurcation is now a structural feature of the sector, not a cycle to wait out.
Editorial analysis · Real Estate Trail Editorial
On the RET wire
- The ninth San Diego story tracked on the wire in October 2026. All San Diego coverage →
- Disclosed office deal value tracked in October 2026: $2.3B across 7 reported transactions. All Office coverage →
Computed from Real Estate Trail’s own tracked coverage
LA MESA, CALIF. — Rainbow Investment Co. has broken ground for Cush Medical Plaza, a medical office project that will be situated adjacent to the Sharp Grossmont Hospital campus in La Mesa, located in San Diego County…
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