433A Foundation Specialist · Existing Homes Only
Permanent Foundation Retrofit & 433A for Homes Already on Site
If a lender, buyer, or title company asked for a 433A, Cal Star can upgrade the foundation under your existing mobile home and help with the paperwork. We do not install, set, or place new manufactured homes.
Your home must already be on the property. We retrofit — we do not do new mobile home installations.
Please Read First
We Retrofit Existing Homes. We Do Not Install New Ones.
Form 433A is used both when a new manufactured home is set on a lot and when an existing home is converted to a qualifying permanent foundation. Cal Star only does the second kind of work.
We can help if
- Your mobile or manufactured home is already sitting on the property
- A lender, buyer, or title company asked for a 433A or permanent foundation
- You are refinancing, selling, or converting how the existing home is titled
- The supports under the home need to be upgraded to meet 433A standards
We cannot help if
- You need a new mobile or manufactured home installed, set, or placed
- The home has not arrived yet, or a dealer is delivering a new unit
- You need transport, crane, or first-time utility hookup for a new home
- You are looking for a contractor to set up a vacant lot or dealer inventory
When You Need This
Common Reasons Existing Homeowners Call About a 433A
These requests are for a home that is already on the lot. If you need a new home installed, Cal Star is not the contractor for that job.
- The home is already on the property and needs a qualifying permanent foundation underneath
- A lender or mortgage broker asked for a 433A on the existing home
- You are refinancing and underwriting needs foundation documentation
- A buyer or title company requires a recorded 433A before closing
- You want to convert how the existing home is treated for financing or real property purposes
- Your park or advisor recommended upgrading the foundation under the home you already have
What We Provide
Permanent Foundation Retrofit & 433A Support
Cal Star works under manufactured homes that are already in place. Permanent foundation work is inspected underneath first, sized for the home that is there, and scoped in a clear written estimate.
Permanent Foundation Retrofit
We upgrade the support system under your existing mobile or manufactured home so it can qualify as a permanent foundation — built to carry the structure properly and meet the standards your documentation path requires.
433A Foundation Specialist
Homeowners and lenders ask for 433A help by name. Cal Star walks you through what the form is for, what work it depends on, and how it fits into your project timeline.
Under-Home Inspection First
Before recommending a permanent foundation, we inspect piers, pads, supports, moisture, and the frame so the scope matches what your home actually needs.
Documentation Path Explained Clearly
A 433A is stamped and recorded with the county after qualifying work. We explain the steps in plain language so you know what Cal Star handles and what other parties (engineer, county, lender) may still need.
Related Foundation Repairs
If piers, braces, vapor barrier, or re-leveling also need attention, we include that in the same plan so you are not coordinating multiple contractors under the home.
See full foundation repair servicesWritten Estimate With Discounts Applied Up Front
Senior, veteran, and first responder discounts are captured on the estimate form and included in your written quote — not added as an afterthought.
What Is a 433A?
The Permanent Foundation Document Lenders Ask for by Name
Form 433A is the California permanent foundation document used with manufactured and mobile homes. After a qualifying permanent foundation is in place under an existing home, the form is stamped and recorded with the county.
That recorded document is often required for loans, refinances, and sales. It is why so many homeowners call Cal Star specifically about a 433A — not just “foundation work.” The form’s official title mentions installation, which is why people looking to set a brand-new home also land here. That is not the work we do.
Cal Star retrofits the permanent foundation system under a home that is already on site and helps with the 433A documentation process. We do not guarantee lender approval or county timelines, but we make the construction and paperwork path as clear as possible from the first estimate.
- Existing homes only — no new-home installations
- Ask for Cal Star as your 433A Foundation Specialist
- Help preparing for county-recorded 433A documentation
- Free estimates across Southern California
Why It Matters
Why Permanent Foundations Matter for Financing and Long-Term Stability
A permanent foundation is more than a paperwork checkbox. It is a structural system under the home that lenders and buyers treat as part of how the property can be financed and transferred.
When someone asks for a 433A, they are usually asking whether the home sits on a qualifying permanent foundation and whether that work has been documented the way California expects. Waiting until the week of closing is how deals get delayed.
Cal Star works on existing mobile homes every day. If you need a permanent foundation retrofit, related repairs, or help understanding the 433A path, we will inspect the home and give you a written plan — including any senior, veteran, or first responder discount that applies.
Need pier repair, bracing, or moisture work too?
Permanent foundation projects often uncover related foundation issues. Cal Star handles pier and pad repair, earthquake bracing, vapor barriers, and more.
View foundation repair services
Our Process
What Happens After You Request an Estimate?
- 01
Request an Estimate
Call or send the form. It takes about a minute.
- 02
We Review Your Project
A team member reaches out to understand what is going on.
- 03
On-Site Inspection
We look at the actual problem — not just the symptom.
- 04
Clear Proposal
You get a straightforward estimate with no pressure.
- 05
Professional Repair or Remodel
Experienced crews complete the work and clean up after.
Related Services
Homeowners Also Ask About
Service Areas
Where We Provide Permanent Foundation & 433A
FAQ
Permanent Foundation & 433A Questions, Answered
Do you install new mobile homes or set a new home on a lot?
No. Cal Star does not install, set, or place new mobile or manufactured homes. We only retrofit a qualifying permanent foundation under a home that is already on the property, then help with the 433A documentation path. If you need a new home installed, you will need a manufactured-home dealer or installer.
What is a 433A for a mobile home?
A 433A is the permanent foundation document used with manufactured and mobile homes in California. After a qualifying permanent foundation is in place, the form is stamped and recorded with the county. Lenders and buyers often require it for financing or a sale. The form is also used when a new home is first installed — that is not the work Cal Star does.
Is Cal Star a 433A Foundation Specialist?
Yes, for existing homes. Cal Star retrofits permanent foundation systems under mobile homes that are already on site and helps homeowners with the 433A documentation process. Mention permanent foundation / 433A when you request your estimate so we can scope the right work.
Do I need a 433A to sell or refinance my mobile home?
Not always — but many lenders, buyers, and title companies ask for a recorded 433A by name. If someone in your transaction has requested one, it is worth confirming early. Cal Star can inspect your existing home and explain what permanent foundation work and documentation may be needed.
Does Cal Star record the 433A with the county?
The 433A is stamped and recorded through the required documentation path after qualifying permanent foundation work. Cal Star helps homeowners navigate that process and explains which steps we handle versus what an engineer, lender, or county office may still need. Ask during your estimate for the details that apply to your home.
Can Cal Star also repair damaged piers or re-level the home?
Yes. Permanent foundation retrofits often include related foundation repair or re-leveling. Cal Star inspects underneath first and includes what is actually needed in one written estimate.
Do you offer discounts on permanent foundation work?
Yes. Senior, veteran, and first responder discounts apply. Select the qualification on the estimate form so it is included in your written quote from the start.
Reviews
What Permanent Foundation & 433A Customers Say
“Met with David Harris who inspected our home and he did a thorough job in explaining what repairs were needed for our foundation.”
Review 1 of 4
Free Estimate
Request a Free Permanent Foundation & 433A Estimate
This estimate is for a permanent foundation retrofit under a mobile home that is already on the property. Cal Star does not install or set new homes.
- Free, no-pressure estimates
- Senior, veteran & first responder discounts
- Locally owned & operated in Corona, CA
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Free estimates · Licensed & insured · CSLB #989323 · Serving Southern California since 2014