Rancho Cordova's drug-ingredient plant files for a big expansion

Behind the fences south of Highway 50 in Rancho Cordova, on land that was once part of the Aerojet campus, a drug-ingredient plant is filing for its biggest expansion in years. Three building permit applications for 12295 Hartford Street, filed between Oct. 7 and Nov. 5, add up to $21.3 million, according to Sacramento County's permit records. One of them describes clean rooms and a room kept at 20 degrees below zero.

The site is the AMPAC plant, the fine-chemicals maker that South Korea's SK Holdings agreed to buy in 2018 and that now operates as part of SK pharmteco. It makes active ingredients for medicines. It sits in what Houseberry maps as the Aerojet Business Park area, where the typical home near the plant was worth about $647,000 in October 2026.

This is a story about the kind of growth Rancho Cordova wants more of: skilled industrial work on land already fenced for it, with almost nobody next door to object.

What the filings actually describe

The county's records are blunt. The October application is an "initial package" for a large new building: civil work, footings, electrical grounding, underground plumbing and the building shell. At about 270,000 square feet, the finished space would be more than four football fields under one roof.

The November warehouse is the one with the telling details. Its description calls for a "fully operational facility" with clean room spaces and a room held at minus 20 degrees. That is pharmaceutical storage, not boxes on pallets.

The phase 2 interior job picks up where the September early works left off, in two existing buildings on the campus. It adds walls, doors and rooms, plus process equipment and the platforms to reach it.

SK pharmteco announced a smaller California investment last year, $6.1 million for a peptide lab and kilo-scale plant at its Rancho Cordova site, with the lab opening in January 2026 and the plant in the second half of the year. The company has not publicly tied the new permits to a product line, and the permit records do not say. We would not guess.

The same parcel's permit history shows how long this campus has been in the medicine business. In 2021 the county logged a $1.6 million upgrade to one building "for Covid 19 treatment."

Rancho Cordova needs skilled employers, and a plant that makes drug ingredients behind an existing fence is about as good as industrial growth gets. No farmland is lost. No neighborhood is rezoned. The work happens on a campus that has been industrial for decades.

The permits do not list a job count, and we would not invent one. The question for the city is whether the people who take those jobs can find a home nearby.

Home prices around the plant

Rancho Cordova is the cheaper end of the eastern Sacramento suburbs. According to Houseberry data for Rancho Cordova, the typical home citywide was worth about $506,600 in October 2026, down from about $514,600 in November 2025. That is about $94,000 less than Roseville's citywide figure of about $600,700.

The newer neighborhoods closest to the industrial land cost more. Houseberry's October 2026 figures put the Aerojet Business Park area at about $647,000 and Kavala Ranch at about $631,000. Kavala Ranch scores 4.7 out of 5 on Houseberry's safety measure and 4.3 on schools.

Only three of the 21 Rancho Cordova neighborhoods Houseberry scores reach 3.5 overall: Kavala Ranch, Sunridge Anatolia and Sunridge Park. All three are newer subdivisions.

A $21 million permit package will not move a citywide median. A steady run of plants like this one, on land the city has already zoned for them, is how a commuter suburb becomes a place people also work.

To see how the neighborhoods near the plant compare, start with Houseberry's Rancho Cordova neighborhood ranking.

Sources

• Sacramento County, building permit records for 12295 Hartford St., queried Nov. 11, 2026
• Outsourced Pharma, AMPAC Fine Chemicals to be acquired by SK Holdings, July 16, 2018
• Pharmaceutical Online, SK pharmteco invests in its California facility, Oct. 23, 2025