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Rare construction-ready townhome development opportunity in one of Riverside's most sought-after submarkets. 3907 Polk Street is a fully entitled, shovel-ready project offering 57 premium townhome residences across eight buildings on ±2.95 acres (±128,502 SF), with grading complete and all remaining permits at RTI status — delivering an incoming developer a clear and immediate path to vertical construction. The approved plans yield ±69,498 net rentable square feet across an all 2-bedroom/2-bathroom unit mix, comprising 51 standard units at ±1,218 SF and six accessible units at ±1,230 SF, with an average unit size of ±1,219 SF. Every residence features a private covered balcony and a dedicated 2-car garage, with 57 total garages and 114 garage spaces across the site. Units are designed to deliver contemporary, high-quality living with premium fixtures and fully equipped kitchens with state-of-the-art appliances. The site offers exceptional connectivity to key market drivers. Residents will enjoy walking-distance access to Kaiser Permanente Riverside Medical Center and strong regional mobility via the 91, 15, 60, and 215 Freeways. The nearby Metrolink La Sierra Station provides direct rail service to Los Angeles Union Station and the broader Southern California transit network. The City of Riverside is a premier Inland Empire market anchored by major employers across Healthcare, Education, and Government/Aerospace — including Kaiser Permanente, Riverside Community Hospital, UC Riverside, California Baptist University, the County of Riverside, and Collins Aerospace — supported by a strong household income within the trade area. Retail and lifestyle amenities including the Galleria at Tyler, Castle Park, and Downtown Riverside are all within minutes. Inland Empire multifamily fundamentals remain strong, with vacancy near its lowest point since 2022 and net absorption continuing to outpace new supply. The incoming developer has the option to complete a Condo Map with individually parceled APNs, unlocking maximum exit flexibility — whether pursuing a stabilized rental strategy, a for-sale townhome exit, or a combination of both. This is an exceptional opportunity for a residential townhome developer, seasoned investor, or private capital group to acquire a premier development project with sustained demand from both the traditional rental pool and the high-demand student housing market driven by the site's proximity to nearby universities.
Listing agent: Eric Chen DRE #01489184 eric.chen@cbre.com, Listing office: CB RICHARD ELLIS
MLS data updated 10/21/2026, 7:00:59 AM PT
Source: CRMLS, MLS #: CV26177716
Belmont insights
Compare recorded home prices, same-type ZIP sales and mortgage rates.
Oct 12, 2026
Prices use the left axis; mortgage rates use the right. Hover, tap, or focus the chart and use the arrow keys. Red SOLD badges mark recorded sales.
This home · nearest recorded event
$6,200,000Asking price recorded · Oct 12, 2026ZIP 92505 · Oct 2026
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No weekly rateNo published rate within 7 days of this date.No recorded sales in this range. Select All available for older records; missing records do not mean the home never sold.
ZIP averages use publicly displayable closed sales from our licensed MLS feed, matched to the same ZIP and exact property type. Months with fewer than 3 sales are omitted; the current month is incomplete. Lines connect available monthly observations across gaps and do not represent measured prices in missing months. These averages are not adjusted for size, condition, or location within the ZIP, and are not an appraisal. Feed coverage may not include every sale. All available shows the available home and ZIP history, with mortgage rates over the same dates.
Mortgage benchmark: Freddie Mac Primary Mortgage Market Survey®. © Freddie Mac. Weekly national 30-year fixed rates, not APRs or a loan quote. Actual terms vary. Methodology changed in November 2022. The chart does not establish that interest-rate changes caused a home’s price changes.
Lines connect recorded asking and sale prices. They are visual guides, not estimates of the home’s value between those dates.
No earlier records were returned by our current sources. This does not mean the home has never sold.
MLS records may be incomplete. Earlier asking prices are not sale prices.