What Is an HCD 433A in California?

If you are buying a manufactured home in Fresno, Madera, Tulare, or Kings County, you will probably hear the term 433A early in the process. In plain language, an HCD Form 433A is the California document that legally ties a manufactured home to the land underneath it. Once it is recorded, the home stops being treated like a vehicle and starts being treated like real estate, just like a stick-built house. That single step shapes your loan, your taxes, and the title you hold, so it is worth understanding before you sign anything.

What an HCD Form 433A actually is

The full name of the form is the Notice of Manufactured Home (Mobilehome) or Commercial Modular Installation on a Foundation System. It is issued by California's Department of Housing and Community Development (HCD) and used under Title 25 of the California Code of Regulations and Health and Safety Code section 18551. The form documents that a manufactured home, mobilehome, or commercial modular unit has been installed on an approved permanent foundation. When the local building department records that form with the county recorder, the home is converted from personal property to real property.

Why it matters for financing

Most conventional mortgage programs, along with FHA, VA, and USDA loans, will only lend on a manufactured home when it is real property on a permanent foundation. Lenders and title companies rely on the recorded 433A as proof that the home and land are one entity that can be financed with a real estate mortgage. Without it, your options narrow to chattel or personal property loans, which typically carry higher interest rates and shorter terms. If you are comparing offers, the presence of a recorded 433A is often what unlocks the better mortgage.

Does every home need a 433A?

No, and this is where buyers often get confused. The 433A is for HUD-code manufactured homes and mobilehomes (and commercial modulars) that are placed on a foundation and converted to real property. A true modular home is different. Modular homes are built to the California Building Code and are inspected like conventional construction. When a modular home is set on its foundation through the normal local building permit, it usually becomes real property automatically and does not need a 433A. If you are weighing a manufactured home against a modular home, ask which path applies, because the paperwork and timeline differ.

• Manufactured home or mobilehome on a permanent foundation: typically needs a recorded 433A to become real property.
• Commercial modular on a foundation: also uses the 433A process.
• Modular (factory-built) home to the California Building Code: usually becomes real property through the building permit and does not need a 433A.

Who records it, and when

The process is tied to your foundation permit and your local enforcement agency, which in our area is the county or city building department. The general sequence looks like this:

1. You obtain a building permit from the local enforcement agency to construct the permanent foundation, and you show that the owner holds title to (or is buying, or has a long-term lease on) the land.
2. The home is installed on the approved foundation and passes final inspection.
3. Form 433A is completed in full, and any existing titles, certificates, license plates, or registration decals on the home are surrendered to HCD.
4. A Certificate of Occupancy is issued, and a state recording fee is paid per transportable section.
5. The enforcement agency records the 433A with the county recorder, typically within five business days of occupancy, and forwards the recorded form and surrendered documents to HCD.

How it affects taxes and title

Once the 433A is recorded, your home moves onto the county property tax roll and is taxed as real property along with the land, instead of being registered each year with HCD as personal property. For many buyers this is a benefit, because it ties the home into standard real estate financing and ownership. It is also a meaningful, durable change to your title, so it deserves a careful read before you commit.

One point worth saying plainly: converting to real property is meant to be permanent. Once the home is affixed and the 433A is recorded, you generally cannot simply switch the home back to personal property. There is a narrow process to report that a home was actually removed from its foundation, but that is not a casual undo button. Treat the conversion as a one-way step.

“When recorded, the 433A is indexed to the owner of the real property and gives constructive notice of its contents, which is exactly the certainty lenders and title companies want before they finance a home.

What Central Valley buyers should keep

Whether you are placing a home on family land near Madera or buying an existing home already on a foundation in Fresno, hold on to the documents below. They are what your lender, title company, future buyer, or county assessor will ask for, and replacing them later is a hassle.