A renter-majority city of apartments and duplexes
Census estimates count about 19,700 occupied homes in Montebello, and roughly 10,600 of them, or 54%, are rented. Fewer than half of the city's 20,400 housing units are stand-alone houses. About 5,700 sit in buildings of five or more units, including some 1,750 in complexes of 50 or more, and another 2,900 are in duplexes, triplexes and fourplexes. The median Montebello home was built in 1963.
That mix is where German cockroaches do best. In a garden apartment or a fourplex, kitchens are often stacked or placed back to back, the gap under a front door opens onto a shared walkway, and decades-old pipe penetrations behind sinks and stoves are rarely sealed tight. A unit that is treated on its own is likely to be reinfested from the one beside it, so we ask early whether the neighboring units can be inspected too.
Sources: [1]
What county housing inspectors look for in Montebello
Montebello does not run its own health department. The LA County Department of Public Health enforces state health codes everywhere in the county except Long Beach, Pasadena and Vernon, and its District Inspection Branch carries out routine and complaint inspections of apartment buildings with five or more units. The county lists vermin, naming cockroaches and rodents, among the violations inspectors check. For homes and buildings of four units or fewer, the branch responds to complaints, which tenants can file through the Environmental Health call center at (888) 700-9995.
For Montebello owners and managers, the practical takeaway is to treat cockroaches before an inspector finds them, and to keep a written record of what was done. Our visit reports list the units inspected, where activity was found, the products placed and the repairs we recommend, which gives you a paper trail if a tenant complaint or routine inspection turns up activity.
Sources: [2][3]
A vermin closure on Greenwood Avenue
The county's weekly food-facility closure report for October 5 to 11, 2025 lists a market on South Greenwood Avenue in Montebello (ZIP 90640) that was closed on October 3, 2025 for vermin infestation under California Health and Safety Code section 114259.1 and allowed to reopen on October 6. The report does not say which pest was found. In the same report, vermin was the reason given for most of the closures across the county.
A closure like that usually means lost sales for every day the doors are shut, so Montebello restaurants and markets are better served by steady monitoring than by a single treatment after a failed inspection. On commercial accounts we place sticky monitors in dry storage, under prep tables and at the dish station, use only products whose labels allow food-area use, and schedule visits before opening or after closing.
Sources: [4][3]
Treating one apartment without pushing roaches into the next
UC's Pest Notes identify the German cockroach as California's most common indoor species, especially in multi-unit housing, and note that adults can hide in a crack about 1/16 inch wide. Sprays and foggers tend to reach only the roaches in the open and can drive the rest deeper into walls or across to a neighbor, which is why our Montebello apartment work relies on gel bait placed in hinges, pipe gaps and appliance voids, paired with an insect growth regulator that keeps young roaches from becoming breeders.
About 56% of Montebello residents speak Spanish at home, so prep instructions, findings and the quote can all be covered in Spanish by our technicians. Roughly 3,400 residents speak Chinese at home; our team works in English and Spanish, and a Chinese version of pespro.com is available for written information.
Sources: [5][6][1]
