Welcome to API Trailers in California!

Located on the beautiful Central Coast in Santa Barbara County, API Trailers has served as a California manufacturer and dealer of office trailers and factory built modular buildings since 1983. See what our satisfied customers say about API Trailers.

At API we pride ourselves in the quality and longevity of our products, which include:

  • job-site trailers
  • mobile offices
  • portable classrooms
  • storage containers
  • pre-fabricated buildings
  • portable office trailers
  • relocatable office buildings
  • modular buildings
  • modular homes
  • park cabins
  • cabin trailers
  • pre-fabricated offices

API Office Trailers, Modular Buildings, and Cabin Trailers in California can roll in a temporary mobile office trailer to any California construction site, set up a multi-wide commercial modular office building on your job-site for those longer projects, or custom design & factory build a office trailer or modular building to suit your permanent space needs. API Waste Management, Inc. can also provide roll-off dumpster in Santa Barbara & San Luis Obispo Counties, http://apiwasteservices.com. Call toll free at 800-394-9217 or email sales@apitrailers.com for your free estimate. 



API Waste Services

API offers new and used mobile offices, job site trailers, and sales offices for rent, lease, or purchase.  Delivered anywhere in California.  Rent or purchase an office trailer standard layouts, or we will customize a floor plan. Learn more
API designs, builds, manufactures & delivers modular buildings for your temporary or permanent space needs. From concept to construction API will work with you to provide you with a quality built pre-fabricated building.Learn more
API designs & factory builds custom cabins/park models in California. Built on a single chases, mounted on wheels and do not exceed 400 sq. ft. Cabins are titled and registered as RV’s. Great vacation rental, hunting cabin, or granny house.Learn more

Featured Projects

Custom Built Cabin Trailers

The Santa Barbara County Parks Department granted API Trailers the contract to build eleven new cabin […]

Rancho Guadalupe Modular Office Building

API designed and built four modules to accommodate Rancho Guadalupe’s growing farming operation in […]

UCSB Modular Bike Shop

UCSB was in need of a new student bike shop. A two piece modular […]

Latest News!

  • Off-Grid Custom Cabin

Off-Grid Custom Cabin

  • February 15th, 2017

This beautiful 12×32 custom cabin was built with solar panels to provide all the power needed.  It also features a 10ft side porch built […]



  • November 14th, 2014

This new custom cabin, was designed built and delivered in California by API Trailers.  Call us today and we can build one for you.


Proud Members of…