Mobile Home Tie-Down Requirements by State
Updated September 2026
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Mobile home tie downs are the anchoring system that keeps a home in place under wind load, and the requirements are set locally rather than nationally.
The short answer
Mobile home tie downs anchor the home to the ground so it resists wind uplift and sliding. What is required depends on where the home sits: the wind zone, the state’s installation rules and the manufacturer’s instructions all apply. Requirements differ by state, so a system that passed in one place may not pass in another.
What a tie-down system is made of
A tie-down system is anchors in the ground, straps to the frame, and in some configurations over the top of the home, all sized and spaced to the load the home has to resist.
The anchor type is chosen for the soil. An anchor rated for firm soil in one yard is not the right anchor in soft or sandy ground next door, which is why substitutions made on site without a spec are a problem.
- Establish the wind zone and requirement. Set by where the home sits, not by where it was built.
- Match anchors to the soil. Soil type decides the anchor and its holding capacity.
- Space and size the straps. To the manufacturer’s instructions and the applicable state rules.
- Tension correctly. Under tensioned straps do nothing and over tensioned ones damage the frame.
- Re-check after any leveling. Adjusting piers changes the geometry, so anchoring is verified again afterwards.
How requirements differ by state
Every home built after October 20, 2008 requires tie downs under HUD’s federal standard, and states are free to layer stricter anchoring rules on top of it, the way Florida does with added corrosion protection requirements. See HUD’s manufactured housing program for who administers installation standards where you are.
What is consistent everywhere is the structure of the question: which wind zone the home is in, which installation rules the state applies, and what the manufacturer’s instructions specify. Answer those three and you have the requirement.
Swipe the table sideways to see every column.
| Input | Where it comes from |
|---|---|
| Wind zone | The location of the home |
| State installation rules | The state’s own manufactured housing program |
| Manufacturer instructions | The home’s own installation manual |
| Soil type | Site assessment, decides anchor selection |
| Home size and profile | Section count and height affect load |
Why insurers and inspectors ask about them
Anchoring is a safety system, and it is also documentation. Insurers ask because wind loss is the risk; inspectors ask because it is part of a compliant installation.
Keep the installation paperwork. When a policy is written, a home is sold or a claim is made, the paperwork is what gets asked for, and reconstructing it later is much harder than filing it now.
How mobile home tie downs are inspected
That is the whole inspection, and an owner can walk it in twenty minutes with a flashlight. Anything found becomes a contractor conversation, because correcting mobile home tie downs is drilled, tensioned work with the home’s weight involved, but finding a problem early costs nothing.
- Count and layout. Straps present where the plan for the home’s size and zone says they should be, at the spacing the spec calls for.
- Strap condition. Rust, fraying, kinks and cuts, especially where straps cross the frame edge.
- Tension. Straps bear evenly; a strap you can push slack by hand is not holding anything.
- Anchor heads and ground. Heads tight, not lifted or tilted, in ground that has not been washed out or heaved around them.
Anchors, straps and soil: the three variables
Every tie-down system is those three things. The anchor grips the ground, the strap connects anchor to frame, and the soil decides how well the anchor can do its job. Specifications for all three come from the state program and the home’s installation manual, which is why the right answer in sandy coastal ground differs from the right answer in clay.
Soil is the variable owners forget. An anchor torqued into firm ground years ago can sit in different ground today after grading changes, new drainage patterns or a wet decade, and mobile home tie downs are only ever as strong as what they are screwed into. When ground conditions around the home change visibly, the anchoring deserves a fresh look even if every strap still looks tidy.
When tie downs need attention again
Three events put tie-downs back on the list. A move: every relocation ends with a full new tie-down job at the new site, to the new ground. A re-level: adjusting pier heights changes strap geometry and tension, so straps get re-tensioned as part of any competent leveling visit. A major storm: after the kind of wind event the system exists for, a walkaround checks that nothing stretched, shifted or pulled.
Between events, the system mostly asks to be left alone and looked at occasionally. Owners in wind prone areas often pair the check with insurance renewal, since carriers in those regions increasingly ask about anchoring anyway and a documented recent inspection is a useful thing to hold.
Why wind zone and location set the tie down spec
Spacing is not a rule of thumb, it is a table lookup. 24 CFR 3285 subpart E sets maximum tie spacing from the wind zone, the floor width, the strap attachment height and the I-beam spacing, and real spacings land anywhere from about 4 feet to about 19 feet apart depending on those inputs. Wind Zones II and III also require a vertical tie at every diagonal tie location. That is why a spec written for one state can be wrong two states over.
Tie-down requirements are written around wind, so the map decides more than the home does. Coastal and hurricane prone regions specify more anchoring than sheltered inland ones, and the same home model can need meaningfully different mobile home tie downs in two different counties. The authority is the state program where the home sits, read together with the home’s installation manual.
For an owner this has one practical meaning: specifications do not travel. A setup that passed inspection at the old site is not evidence about the new one, and advice from a forum post written in another state is weather advice for someone else’s weather. When in doubt, the local building department or the state’s manufactured housing program will say what applies, and saying it is their job.
It also means the question is worth asking before buying a home in a windier county than it came from, because bringing mobile home tie downs up to the stricter spec belongs in the moving budget rather than in the surprise column.
Do you level and anchor mobile homes?
This page is the kind of guide we build into a leveling contractor’s own site: tie-down requirements for your state, a re-leveling page, and city pages for your service area, all wired to a quote form that reaches your phone. Live in two weeks.
Related guides
Common questions
- What are mobile home tie downs?
- They are the anchoring system that holds the home against wind uplift and sliding: anchors in the ground, straps to the frame, sized and spaced to the load where the home sits.
- Are tie-downs required by law?
- Requirements are set by each state’s installation rules plus the manufacturer’s instructions, rather than by one national standard. HUD sets the federal floor and states are free to add stricter rules on top of it, per HUD’s manufactured housing program. Check your own state before assuming.
- How many tie-downs does a mobile home need?
- It depends on wind zone, home size and the manufacturer’s instructions. There is no single number, and a contractor who quotes one without asking where the home is has not checked.
- How long do anchors last?
- Anchors and straps degrade with corrosion and ground movement, and a system installed correctly can still need attention years later. Have them inspected when the home is levelled.
- Do I need to re-check tie-downs after leveling?
- Yes. Adjusting the piers changes the geometry the straps were tensioned to, so anchoring is verified again afterwards. See the leveling guide.
- Who installs tie-downs?
- A leveling and anchoring contractor, or the installer at set. If that is your trade and you want this page found in your service area, see the leveling website offer.
- Can I install mobile home tie downs myself?
- The parts are sold openly, but the spec work is the hard part: anchor type for the soil, layout for the home and wind zone, and tension across the system. Most states put this work under installer licensing, and insurers and inspectors want documentation. Owner installed tie-downs that fail an inspection get done twice.
- How do I find out what my state requires for tie downs?
- Start with the state’s manufactured housing program, which publishes or references the anchoring rules, and pair it with the installation manual for your home. The local building department fills in county level detail. An installer who works your area daily will know the answer before you finish the question, which is itself a good hiring test.