Black_Diamond
After reviewing the map on the Forge Homestead Apartments website at https://www.deanzaproperties.com/south-bay-area/forge-homestead-apartments/, the addresses for this apartment complex buildings are indeed wrong. The building addresses were fixed and many unit addresses added with this changeset https://www.openstreetmap.org/changeset/139195293

On a related note, the Santa Clara Tax Assessor says that this apartment complex land contains the following addresses:
20691 HOMESTEAD RD CUPERTINO 95014-0450
20691 FORGE WY CUPERTINO 95014-0450
20689 FORGE WY CUPERTINO 95014-0450
20687 FORGE WY CUPERTINO 95014-0450
20681 FORGE WY CUPERTINO 95014-0450
20677 FORGE WY CUPERTINO 95014-0450
20671 FORGE WY CUPERTINO 95014-0450
20667 FORGE WY CUPERTINO 95014-0450
20661 FORGE WY CUPERTINO 95014-0450
20657 FORGE WY CUPERTINO 95014-0450