The foundation is where
most of these deals die.
Build date and title status get checked first. Foundation is the third gate, and it is the one that fails most often, because a home can look completely finished and still not meet the standard. Here is what actually has to be true.
FHA, VA, USDA, and most conventional programs require a manufactured home to sit on a permanent foundation that complies with the Permanent Foundations Guide for Manufactured Housing, HUD-7584, dated September 1996. Compliance has to be certified by a professional engineer or registered architect licensed in the state where the home is located. Ground anchors, stacked blocks, and vinyl skirting alone do not meet the standard.
What "permanent foundation" actually means
The phrase sounds like it describes how solid something feels. It does not. It describes compliance with a specific federal document: the Permanent Foundations Guide for Manufactured Housing, HUD publication 7584, dated September 1996. You will also see it referenced as HUD-4930.3G. Same document.
What the standard requires, in plain terms, is a system that transfers the home's loads into the ground and holds it against forces trying to lift it or push it sideways. That means footings below frost depth, piers or perimeter walls that carry the load, and a method of attaching the home to that structure that is genuinely permanent.
The design has to be site specific. Dead loads, snow loads, wind loads, and seismic loads all factor in. A foundation that works for a home in Tennessee is not automatically a foundation that works for the same home in Grayling.
The part people miss. Meeting the standard is not enough on its own. A foundation that fully complies but has no engineer's certification in the loan file will still stop the loan. The certification is a required document, not a formality.
Who signs it, and why it has to be them
The certification must come from a licensed professional engineer or registered architect who is licensed or registered in the state where the home sits. For a property in Cadillac, that means a Michigan licensed engineer. A certification from an engineer licensed in another state will not be accepted, no matter how thorough it is.
It has to be site specific and it has to carry the engineer's signature, seal, and state license or certification number. A copy goes into the lender's loan file, and on FHA loans into the insuring binder.
A home inspection report does not substitute for this. Neither does a letter from the installer, the dealer, or a contractor. We have had sellers hand us a very detailed inspection report and be genuinely surprised that it did not satisfy the requirement.
Frost depth: the Northern Michigan problem
Foundations have to be protected against frost heaving, which means footings have to extend below the local frost line. This is where Northern Michigan differs meaningfully from the rest of the state and from most of the country.
Frost depths up here run considerably deeper than downstate. A pier and footing system that was perfectly adequate where it was originally designed can be inadequate once the home is sitting in Missaukee County. Homes that were set quickly, set decades ago under different expectations, or set by whoever was available that week are the ones that tend to have this issue.
This is also the correction that costs the most to fix after the fact, because it is below grade. Which is why we push to get the foundation looked at early rather than discovering it three weeks before a closing date.
The six things that fail certification
In rough order of how often we run into them on Northern Michigan properties.
Ground anchors and straps
FHA does not accept ground anchors as permanent attachment. For years this was the standard way homes were set, so a very large share of existing homes have exactly this. The home is held down. It is not permanently attached in the sense the standard means.
Vinyl skirting as the enclosure
The crawl space has to be enclosed with continuous permanent foundation-type construction, meaning concrete, masonry, or treated wood. Vinyl skirting generally does not satisfy it, even though it looks complete and keeps animals out.
Footings above frost depth
Footings have to go below the local frost line. This is a bigger deal in Northern Michigan than almost anywhere a home might have originally been designed for, and it is the correction that costs the most because it is underground.
Unmortared block piers
Piers that are dry stacked and simply bearing weight typically do not meet the standard. The system needs proper footings and a connection path from the home's frame through the piers into the ground, resisting both uplift and lateral movement.
No engineer certification
A compliant foundation with no sealed certification still stops the loan. This is purely a documentation failure and it is entirely avoidable, but it happens constantly because nobody ordered the report.
Engineer not licensed in Michigan
The engineer has to be licensed or registered in the state where the home is located. A thorough, sealed report from an engineer licensed elsewhere will be rejected, and you will pay twice.
How to get it handled
Five steps. Start at step one before you order anything.
Ask whether a certification already exists
If the home was previously financed with an FHA, VA, or USDA loan, a foundation certification may already be sitting in the seller's file. An existing certification can often be used if nothing about the foundation or structure has been modified since. Ask before you spend money.
Hire an engineer licensed in Michigan
Professional engineer or registered architect, licensed in Michigan. Confirm that before scheduling, not after. Ask specifically whether they perform HUD-7584 foundation certifications, because not every engineering firm does this work.
Schedule the site inspection
The engineer evaluates the actual foundation, footings, piers, attachment, and enclosure as the home sits. In rural parts of Northern Michigan, travel distance affects both cost and scheduling, so build in more lead time than you would downstate.
Correct whatever fails, then re-inspect
If the report identifies deficiencies, the work has to be completed and the engineer has to come back. Decide early whether the scope of corrections makes sense against the value of the property, because sometimes it does not.
Get the sealed certification to your lender
The certification has to be site specific and carry the engineer's signature, seal, and state license number. Send it as soon as you have it. It goes in the loan file, and on FHA loans in the insuring binder.
Common questions
The other two gates
Foundation is one of three things that decide whether a manufactured home is financeable. Check all three before you write an offer.
Get the foundation looked at early, not late.
Foundation corrections take time and sometimes real money. Finding out in week one gives you options. Finding out in week five gives you a problem.
Equal Housing Lender. All loans subject to credit approval and underwriting. Program eligibility, rates, and terms are subject to change without notice. This is not a commitment to lend. Information about HUD foundation standards is provided for general education and reflects the Permanent Foundations Guide for Manufactured Housing, HUD-7584, dated September 1996. Requirements are set by HUD, VA, USDA, and individual investors and are subject to change. A licensed professional engineer determines compliance for a specific property. Angie Anderson NMLS #1999286 | Kirby Slocum NMLS #680817 | Union Home Mortgage NMLS #2229229. Licensed in Michigan, Ohio, and Indiana.
