Need a classroom in California without the cost or wait of new construction? A used portable classroom is the fastest, most affordable option. At iModular, we buy, refurbish, and deliver used portable classrooms throughout California — so private schools, charter schools, churches, and programs get a like-new, HCD-certified building for a fraction of the cost of new. This guide covers what you get, the common sizes, what they cost, and how buying works in California.
We’re based in Huntington Beach and have worked in modular buildings since 1988, with a 5.0-star Google rating from California customers.
What you get with a refurbished California classroom
“Used” doesn’t mean worn out. Every classroom we sell is inspected and refurbished before delivery:
- New flooring (carpet tile or luxury vinyl plank)
- Fresh interior paint and a cleaned, serviced interior
- T-grid ceiling with LED lighting (Title 24-compliant)
- HVAC service or replacement, and an electrical inspection
- Roof inspection and coating as needed
- Exterior touch-up or repaint
The result looks and works like new, at used pricing — and because you own it, there’s no monthly lease and no return fees.
Common portable classroom sizes in California
| Size (W×D) | Square feet | Sections | Typical use |
|---|---|---|---|
| 24×40 | 960 | 2 sections | Standard classroom — the most common size |
| 30×32 | 960 | 2 sections (two 15-ft) | Standard classroom — common legacy DSA size |
| 36×40 | 1,440 | 3 sections | Large classroom or classroom plus workroom |
| 24×60 | 1,440 | 2 sections | Large classroom or open instructional space |
| 36×60 | 2,160 | 3 sections | Double classroom or classroom/admin combo |
A 24×40 standard classroom is 960 square feet, built from two sections, and ships on two trucks — standard oversize permits, no escort required on California highways.
How much does a used portable classroom cost in California?
Price depends on size and condition, the level of refurbishment (flooring, paint, HVAC, ceiling, and lighting), the delivery distance within California, the foundation, and whether an ADA ramp is required. Buying used is the lowest-cost route to a real classroom, and you own the asset. For a firm number for your size and California location, call (800) 806-7485.
HCD certification — and DSA-to-HCD recertification
In California, modular classrooms for private schools and churches are certified through the state’s HCD (Housing and Community Development) program — faster and more flexible than the DSA process used for public K-12 campuses. A typical HCD plan check takes about 4-8 weeks.
Many of the best-value used classrooms started life as DSA public-school portables. Those buildings are built to a higher structural standard than HCD requires, so recertifying them from DSA to HCD gives you a better-built classroom at a lower cost than new construction. We handle that recertification as part of the project.
Used vs. new vs. lease
- Used (refurbished) — fastest and most affordable; you own it.
- New — full customization, longest life; higher cost and lead time.
- Lease — low upfront, but you can pay more than the building is worth over a few years and own nothing, plus return and teardown fees.
How buying from iModular works
- Tell us your need — size, California location, and timeline.
- We match a building and refurbish it to your spec.
- We deliver and install — set on a CP Pier System (a state-approved, powder-coated black, adjustable steel pier foundation rated for 100 mph wind and 100 lb snow loads), with an ADA ramp where required.
- You’re in — often in weeks, not the months a new build takes.
Permitting and site work (utilities, grading, paving) are typically the owner’s responsibility — we’ll spell out exactly what’s in and out of scope.
Used portable classrooms for sale across California
We deliver statewide — Southern California (Los Angeles, Orange County, the Inland Empire, San Diego), the Central Valley (Bakersfield, Fresno), the Bay Area, and Sacramento. Tell us your city and site, and we’ll tell you what’s available and what delivery looks like.
California projects
For The Well Church in Yucaipa, we delivered and installed two HCD modular classroom buildings — a 24×60 and a 24×40 — with handicap access ramps for their youth ministry. We also provided a 24×60 and a 24×40 classroom for Desert Christian Academy, and delivered a 24×60 classroom for Saint Joseph’s Academy. Real classroom buildings, refurbished to purpose and set on site, well below new-build cost.
Frequently asked questions
What is the most common portable classroom size in California?
The 24×40 (960 square feet) is the most common standard classroom. 30×32 is another common size, and 24×60 or 36×60 suit larger groups.
Do used portable classrooms in California need HCD approval?
Yes — classrooms for private schools and churches are certified through California’s HCD program. We handle HCD certification and DSA-to-HCD recertification as part of the project.
How fast can a used classroom be delivered in California?
Refurbished, already-approved buildings can often be on site in a few weeks. The building is rarely the bottleneck — permitting and site work usually set the timeline.
Are used portable classrooms cheaper than new?
Yes. A refurbished used classroom costs significantly less than a new build and is much faster to deliver.
Get a California classroom quote
Tell us your size, your city, and when you need it. We’ll match you to a building and give you an honest read on cost and timeline. Call (800) 806-7485 or request a quote at iModular.com.
About the author: Matt Banes is the founder of iModular.com and has worked in California’s modular building industry since 1988. iModular buys, refurbishes, delivers, and installs portable classrooms and modular offices statewide, with a 5.0-star Google rating. Last updated: June 10, 2026.
Leave a Comment