Corner-lot development opportunity in central Hayward. This approx. 15,858 sf parcel (per survey) at A St & 4th St has a City-approved SB 9 urban lot split creating two parcels of approx. 9,112 sf and 6,746 sf. A full architectural, structural & civil plan set is near final for four new 2-story units, built as two side-by-side duplexes (one on each new lot). The Lot 1 units are approx. 2,102 sf each and the Lot 2 units approx. 1,959 sf each, for about 8,122 sf of total living area. Each unit has 4 bedrooms, 3 baths, a main-level bedroom, an upstairs bonus room and an attached 2-car garage. The design is all-electric with solar, fire sprinklers, EV-ready garages and separate utility meters. Almost all of the design and entitlement work is already done, so a builder can move toward permits sooner. Parcel map recordation and City fees remain to be completed. Buyer to verify all information.

Based on information submitted to CRMLS as of November 14, 2026 8:23 AM EST . All data is deemed reliable but is not guaranteed accurate by the MLS. All information should be independently reviewed and verified for accuracy. IDX information is provided exclusively for consumers’ personal, noncommercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.

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Property Details of 1399 A Street

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Santa Rosa

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Property Details of 1399 A Street

Property Details

Basic Information

Building

Location

Map Location

Hi there! How can we help you?

Hi there! How can we help you?

Hi there! How can we help you?

Santa Rosa