Mobile Home Tie-Down Cost Calculator

Step 1: Select the Mobile Home Type

Choose the configuration that matches the home.

Single-Wide Mobile Home

A single-wide normally consists of one transported section. Single-wide homes generally require fewer anchors, straps, and connection points than multi-section homes, but the actual anchoring layout must follow the approved installation instructions.

Double-Wide Mobile Home

A double-wide consists of two joined sections. Double-wide tie-down projects may require:

• More frame anchors
• More longitudinal restraints
• Marriage-line connections
• Additional support inspection
• Greater labor time
• More skirting removal
• More detailed leveling checks

Triple-Wide or Multi-Section Home

Choose this option when the manufactured home has three or more sections. Multi-section homes may require a custom or engineered anchoring layout. The calculator should apply a higher labor, material, and inspection allowance.

Step 2: Enter the Mobile Home Length

Enter the full exterior length of the home in feet. Common mobile home lengths include:

• 48 feet
• 52 feet
• 56 feet
• 60 feet
• 66 feet
• 70 feet
• 76 feet
• 80 feet

The home length helps estimate the likely number of anchor and strap locations. Do not determine the final anchor count from length alone. The approved manufacturer installation manual, foundation plan, anchoring-system approval, and local requirements control the actual design.

Step 3: Enter the Width of Each Home Section

Enter the width of one section rather than the combined width when the calculator requests section dimensions. Common section widths include:

• 12 feet
• 14 feet
• 16 feet
• 18 feet

For a double-wide home with two 14-foot sections, enter:

• Section width: 14 feet
• Number of sections: two

When the calculator requests the full home width instead, enter 28 feet.

Step 4: Enter the Number of Home Sections

Select:

• One section
• Two sections
• Three sections
• Four or more sections

The calculator uses the number of sections to estimate:

• Frame length
• Marriage-line connections
• Anchor quantity
• Strap quantity
• Installation labor
• Inspection complexity

Multi-section homes generally require more coordination than single-section units.

Step 5: Select the Project Type

Choose the tie-down project that best matches the work required.

Tie-Down Inspection Only

Choose this option when the homeowner needs a professional evaluation of the existing system. An inspection may assess:

• Missing anchors
• Loose straps
• Rust or corrosion
• Damaged frame connections
• Improper spacing
• Soil movement
• Flood or erosion damage
• Foundation settlement
• Compatibility with the home
• Visible installation defects

The calculator adds an inspection and reporting allowance but does not include repairs.

Minor Tie-Down Repair

Select minor repair when the project involves:

• Tightening loose straps
• Replacing limited hardware
• Correcting a few connections
• Replacing one or two damaged components
• Removing light corrosion
• Reconnecting accessible straps

A minimum service charge may apply even when only a small number of components need repair.

Partial Tie-Down Replacement

Choose partial replacement when several anchors, straps, or connections have failed. This option may include:

• Removing damaged components
• Installing replacement anchors
• Replacing straps
• Adding approved connection hardware
• Tensioning the system
• Inspection

Complete Tie-Down Retrofit

Select a complete retrofit when the existing system is missing, outdated, damaged, or unsuitable for continued use. A complete retrofit may include:

• Site evaluation
• Approved anchoring design
• New ground or concrete anchors
• Frame ties
• Longitudinal restraints
• Uplift anchorage
• Connection hardware
• Tensioning
• Permit
• Inspection

New Mobile Home Anchoring System

Choose this option for a new installation or relocation. New installations must follow the approved installation documents, applicable standards, and inspection procedures. Arizona’s installation-permit program covers inspections and enforcement of manufactured-home installation standards based on approved codes and foundation plans.

Step 6: Enter the Existing Anchor Count

Enter the number of anchors currently installed when known. Choose:

• No existing anchors
• Existing count unknown
• Partial system present
• Complete system present

The existing count helps estimate removal, reuse, repair, and replacement requirements. Do not assume that every visible anchor is approved, correctly installed, or usable. Corrosion, soil movement, improper angle, insufficient embedment, missing stabilizer plates, or damaged connections can make an anchor unsuitable.

Step 7: Enter the Number of Anchors to Install or Replace

Enter the contractor-provided or design-specified anchor quantity. The calculator uses: Number of anchors × installed cost per anchor = anchor installation cost The installed rate may include:

• Anchor
• Stabilizer plate
• Strap
• Connection hardware
• Excavation or driving
• Tensioning
• Basic labor

A preliminary calculator may use an estimated anchor count for budgeting, but the final number must be determined from approved installation requirements.

Step 8: Select the Anchor Type

Choose the anchoring system specified for the project.

Helical Ground Anchors

Helical anchors are driven or rotated into suitable soil. The cost depends on:

• Shaft length
• Helix size
• Soil resistance
• Required load capacity
• Installation equipment
• Corrosion protection
• Stabilizer plates

Ground anchors are not suitable for every soil or foundation condition.

Auger-Style Anchors

Auger-style anchors are commonly used where soil conditions and approved installation plans permit. The calculator may include:

• Anchor body
• Stabilizer plate
• Strap
• Fasteners
• Installation labor
• Tensioning

Rock Anchors

Rocky sites may require specialized anchors, drilling, or alternate foundation connections. Choose this option when the property has:

• Shallow bedrock
• Large buried rock
• Extremely dense soil
• Ground conditions that prevent standard anchor installation

Rock anchoring generally carries a higher labor and equipment allowance.

Concrete Anchors

Concrete anchoring may be used when the home is supported on an approved slab, footing, runner, or foundation system. Costs may include:

• Drilling
• Approved expansion or adhesive anchors
• Reinforcing steel
• Concrete pads or footings
• Plates and brackets
• Curing time
• Inspection

An Arizona-approved concrete tie-down system may require specified concrete strength and additional anchorage depending on the installation design and wind conditions. One current state-posted system document specifies concrete with a minimum 28-day strength of 2,500 psi and notes that additional vertical sidewall anchorage may be required in higher wind zones.

Engineered Anchoring System

Choose this option when a licensed professional or approved system provider specifies a custom anchoring design. Engineered systems may be required when:

• Soil is unsuitable for standard anchors
• The home has an unusual foundation
• Existing attachments cannot be reused
• The home is in a high-exposure location
• Structural modifications have been made
• Standard installation instructions are unavailable
• The authority requires engineered documentation

The calculator adds engineering, plan review, and specialized hardware allowances.

Step 9: Select the Tie-Down Configuration

Frame Ties

Frame ties connect the anchoring system to the manufactured-home chassis. The calculator estimates:

• Frame clamps
• Straps
• Buckles or tensioning devices
• Fasteners
• Labor

Diagonal Ties

Diagonal ties help resist lateral and uplift forces. Their angle, attachment location, and tension must follow the approved design.

Longitudinal Ties

Longitudinal restraints help limit movement along the length of the home. Choose this option when the approved installation system requires end or longitudinal anchoring.

Over-the-Top Ties

Over-the-top ties pass over or connect through designated parts of the home. These ties are not appropriate for every manufactured home and should be installed only when specified by the manufacturer or approved design.

Uplift Anchors

Select uplift anchorage when the approved installation requires additional resistance to vertical wind forces. The Arizona Department of Housing published a revised notice concerning uplift anchors for manufactured-home installations on April 22, 2026. The calculator should therefore treat uplift anchorage as a design-driven requirement rather than an optional generic upgrade.

Step 10: Select the Soil Condition

Soil conditions strongly affect anchor selection, installation time, and load capacity.

Standard Firm Soil

Choose standard soil when:

• The soil accepts approved ground anchors
• No major rock is encountered
• No unusual erosion is visible
• The installer confirms suitable resistance

The base anchor-installation rate applies.

Loose or Sandy Soil

Select this option for loose, sandy, or low-resistance soil. The installation may require:

• Longer anchors
• Larger helices
• Additional anchors
• Soil testing
• Alternate anchoring systems
• Concrete stabilization

The calculator applies a higher material and labor allowance.

Hard or Compacted Soil

Hard ground may require additional installation equipment or pilot drilling. The calculator adds labor for difficult driving or drilling.

Rocky Soil

Choose rocky soil when conventional ground anchors may be difficult or impossible to install. Possible additional costs include:

• Specialized drilling
• Rock anchors
• Concrete footings
• Excavation
• Engineering

Expansive or Unstable Soil

Select this option when the site has:

• Soil movement
• Erosion
• settlement
• drainage problems
• expansive clay
• previous anchor movement

A qualified professional should determine whether standard anchors are appropriate.

Step 11: Add Soil Testing or Anchor-Pull Testing

Select whether testing is required. Possible services include:

• Soil classification
• Torque verification
• Anchor-pull testing
• Proof loading
• Inspection documentation

Testing may be necessary when:

• Soil resistance is uncertain
• Existing anchors have moved
• The project uses a specialized system
• The approved installation instructions require verification
• The inspector requests documentation

The calculator adds the testing fee separately from installation labor.

Step 12: Select the Foundation Type

Pier-and-Beam Foundation

This is a common manufactured-home support system. The calculator should assess whether tie-down work also requires:

• Pier inspection
• Shim correction
• Support adjustment
• Marriage-line support inspection
• Releveling

Concrete Slab

A slab installation may require approved concrete anchors, brackets, or embedded connections. Do not assume ground anchors are suitable when the home is installed on a slab.

Concrete Runners or Footings

Choose this option when the home sits over continuous or isolated concrete support elements. The anchoring design may connect to the concrete or use separate approved ground anchors.

Permanent Foundation System

Select this option when the home is installed on an engineered permanent foundation. Tie-down repairs may require:

• Engineering review
• Foundation-plan review
• Specialized brackets
• Concrete repair
• Inspection

Foundation Type Unknown

Choose unknown when the homeowner cannot identify the support system. The calculator should include an inspection allowance before estimating the final anchoring design.

Step 13: Select the Existing Tie-Down Condition

Good Condition

Choose this option when:

• Anchors remain stable
• Straps are tight
• Connections are intact
• Corrosion is minimal
• No soil movement is visible

The calculator includes inspection and minor adjustment only.

Loose or Improperly Tensioned

Select this option when straps appear slack or uneven. The calculator adds:

• Retensioning labor
• Connection inspection
• Hardware allowance

Loose components may still require replacement if corrosion or improper installation is found.

Moderate Corrosion

Choose moderate corrosion when several straps, anchors, or fasteners show deterioration. The calculator applies a partial replacement allowance.

Severe Corrosion or Failure

Select severe damage when:

• Straps are rusted through
• Anchors have pulled out
• Frame connections are broken
• Hardware is missing
• Anchors are bent
• Soil has eroded around the system

The calculator should treat this as a major retrofit rather than routine maintenance.

System Missing or Unknown

Choose this option when no approved tie-down system is visible or documentation is unavailable. The calculator adds a full inspection and replacement allowance.

Step 14: Enter the Number of Straps to Replace

Enter the known number of damaged or missing straps. The calculator uses: Replacement strap count × installed strap rate = strap replacement cost The installed rate may include:

• Galvanized strap
• Frame connection
• Buckle or tensioning hardware
• Cutting
• Attachment
• Tensioning
• Labor

Do not reuse severely corroded or deformed straps unless a qualified installer confirms they remain acceptable.

Step 15: Add Frame-Connection Repairs

Select the condition of the attachment points on the manufactured-home frame.

No Frame Repairs

Choose this option when frame attachment points are sound.

Minor Hardware Replacement

Select minor repairs for:

• Missing bolts
• Damaged clamps
• Loose brackets
• Limited corrosion

Moderate Connection Repair

Choose this option when several attachment locations require new brackets or approved alternate connections.

Structural Frame Damage

Select this option when the chassis has:

• Cracks
• Severe corrosion
• deformation
• broken welds
• damaged cross members

The calculator should include an inspection or engineering allowance rather than attempting to price structural frame repair only from the anchor count.

Step 16: Add Home Leveling

Tie-down work may need to be coordinated with mobile home leveling. Choose:

• No leveling required
• Minor adjustment
• Partial releveling
• Complete releveling

Signs that leveling may be needed include:

• Doors that do not close properly
• Sloping floors
• Cracks at wall or ceiling joints
• Gaps at the marriage line
• Loose supports
• Uneven skirting
• Visible pier movement

Tie-down straps should not be used to pull an out-of-level home into position. The home should be properly supported and leveled before the anchoring system receives final tensioning.

Step 17: Add Pier or Support Repairs

Select the level of support-system work.

No Pier Repairs

Choose this option when supports are stable and correctly positioned.

Minor Pier Adjustment

Select this option for limited shimming or alignment corrections.

Partial Pier Replacement

Choose partial replacement when several supports are damaged, leaning, corroded, or improperly installed.

Extensive Foundation Repair

Select this option when the project requires:

• Multiple new piers
• New footings
• Soil correction
• marriage-line support work
• structural evaluation

Foundation work can significantly increase the total manufactured home anchoring system cost.

Step 18: Add Skirting Removal and Reinstallation

Tie-down components are often located behind or beneath the skirting. Choose:

• No skirting work
• Remove and reinstall limited sections
• Remove and reinstall one side
• Remove and reinstall all skirting
• Replace damaged skirting

The calculator may use: Skirting length × removal-and-reinstallation rate = skirting access cost Additional replacement costs may apply when panels crack, bend, or cannot be reused.

Step 19: Select Under-Home Access Difficulty

Easy Access

Choose easy access when:

• The crawlspace is clear
• The home has adequate working height
• Access panels are available
• No major debris is present
• Utilities do not block the work

No access multiplier is applied.

Limited Access

Select limited access when:

• Crawlspace height is low
• Ductwork blocks anchor locations
• Plumbing restricts movement
• Skirting access is limited
• Storage or debris must be removed

The calculator may add approximately 10% to labor.

Difficult Access

Choose difficult access when:

• The home is extremely low
• Several anchor positions are obstructed
• Excavation is required
• Existing concrete or additions block access
• Special equipment is needed

The calculator may add approximately 20% to labor.

Unsafe or Contaminated Crawlspace

Select this option when the area contains:

• Standing water
• sewage
• mold contamination
• pests
• damaged electrical wiring
• sharp debris
• unstable supports

Cleanup or hazard correction must be priced separately before tie-down installation begins.

Step 20: Select the Site Terrain

Level Site

Choose this option for a relatively flat and accessible property. No terrain adjustment is applied.

Mild Slope

Select this option when one or more sides require additional material handling. The calculator may add approximately 5% to 10% to labor.

Hillside Site

Choose this option for substantial slopes or difficult equipment access. Apply approximately a 15% hillside multiplier.

Erosion-Prone Site

Select this option when water movement or soil loss has exposed or loosened anchors. The calculator adds a drainage, soil-restoration, or engineering allowance. Anchors should not be installed as a substitute for correcting active erosion.

Step 21: Select the Wind and Exposure Category

The calculator may include a general exposure adjustment, but it must not independently determine legal wind-design requirements. Choose:

• Standard sheltered site
• Open exposed site
• Elevated or hillside site
• High-wind design specified
• Wind requirement unknown

Open terrain, ridgelines, hillside properties, and locations without nearby wind protection may require additional design review or anchorage. An approved Arizona tie-down document notes that higher wind zones can require additional vertical sidewall anchorage and that manufacturer-specific attachment locations may also apply.

Step 22: Add Engineering or Plan Review

Choose whether the project requires professional documents.

No Engineering Allowance

Use this option only when the approved manufacturer instructions or listed anchoring system clearly apply.

Basic Foundation-Plan Review

Select this option when existing documents must be reviewed before the installation can be approved.

Site-Specific Engineering

Choose this option when a professional must design anchoring for the home, soil, foundation, or wind exposure.

Revised Plans and Inspection Support

Select this option when the project requires:

• Revised drawings
• Structural calculations
• Responses to inspection corrections
• Additional site visits
• Certification

Engineering costs should be entered separately from installation labor.

Step 23: Add Permit and Inspection Costs

Select the anticipated permitting level.

Inspection Only

Choose this option when a formal inspection is needed without extensive plan review.

Basic Installation Permit

Select this option for a standard permitted tie-down or anchoring project.

Permit With Plan Review

Choose this option when installation drawings, foundation documents, or anchoring-system approvals must be reviewed.

Multiple Inspections or Corrections

Select this option when the project may require:

• Initial inspection
• Correction work
• Reinspection
• Additional documentation

Arizona’s Department of Housing provides installation permitting and inspection services for manufactured homes. Inspection scheduling is handled through its online process. Permit fees vary by project and jurisdiction. The calculator should use a user-entered or verified allowance rather than presenting a universal Arizona permit amount.

Step 24: Enter the Professional Labor Rate

Enter the installer’s hourly labor rate when known. The calculator may otherwise use a regional contractor-rate allowance. Use: Labor hours × contractor labor rate = installation labor cost Potential labor tasks include:

• Site inspection
• Skirting removal
• Anchor installation
• Concrete drilling
• Strap attachment
• Frame connection
• Tensioning
• Leveling coordination
• Cleanup
• Inspection preparation

The Bureau of Labor Statistics published May 2025 state and metropolitan occupational wage estimates in May 2026. Arizona also provides 2025 occupational wage data for state, metro, county, and workforce areas. Employee wages are not the same as contractor billing rates because contractors also cover insurance, payroll costs, vehicles, tools, supervision, overhead, licensing, and profit.

Step 25: Add Travel and Mobilization Costs

Choose:

• Local urban project
• Local rural project
• Remote Arizona location
• Specialized installer traveling from another region

Remote projects may include:

• Mileage
• Crew travel
• Equipment transport
• Overnight expenses
• Material delivery
• Additional mobilization

The calculator may add approximately 10% to 20% for remote locations.

Step 26: Add a Project Contingency

Use a contingency based on project uncertainty. Select:

• 10% for a documented system requiring limited repairs
• 15% for a standard retrofit
• 20% for corroded or incomplete systems
• 25% or more for difficult soil, foundation damage, or unknown conditions

A tie-down project contingency may cover:

• Additional anchors
• Broken or hidden hardware
• Unexpected rock
• Concrete work
• Corrosion
• Pier adjustments
• Skirting damage
• Permit corrections
• Reinspection
• Additional labor

Step 27: Calculate the Mobile Home Tie-Down Cost

After entering the project details, select Calculate Cost. The calculator displays:

• Estimated anchor quantity
• Anchor material cost
• Strap and connection cost
• Existing component removal
• Professional installation labor
• Soil and terrain adjustment
• Concrete or drilling allowance
• Frame-connection repairs
• Leveling and support repairs
• Skirting access costs
• Engineering or plan review
• Permit and inspection allowance
• Travel and mobilization
• Project contingency
• Estimated total tie-down cost
• Likely budget range

Example Mobile Home Tie-Down Cost Calculation

Consider this Arizona mobile home anchoring project:

• Home type: double-wide
• Home length: 60 feet
• Number of sections: two
• Project type: complete retrofit
• New ground anchors: 16
• Replacement straps: 16
• Soil condition: standard firm soil
• Foundation: pier-and-beam
• Existing system: severely corroded
• Frame connections: minor hardware repairs
• Leveling: minor adjustment
• Skirting access: partial removal
• Under-home access: limited
• Terrain: level
• Engineering allowance: $600
• Permit and inspection allowance: $500
• Contingency: 15%

Calculate Anchor Installation

Assume 16 installed anchors at $180 each: 16 × $180 = $2,880

Calculate Strap and Connection Replacement

Assume 16 installed straps and connections at $85 each: 16 × $85 = $1,360

Add Existing System Removal

Assume removal and disposal cost: $650

Add Frame-Connection Repairs

Assume minor hardware repairs cost: $500

Add Minor Leveling

Assume the minor leveling allowance is: $900

Add Skirting Removal and Reinstallation

Assume partial skirting access costs: $450

Calculate the Base Subtotal

$2,880 + $1,360 + $650 + $500 + $900 + $450 = $6,740

Apply the Limited-Access Adjustment

Assume limited access adds 10% to labor-related work. For a simplified calculator example, apply 10% to the base subtotal: $6,740 × 10% = $674 Access-adjusted subtotal: $6,740 + $674 = $7,414

Add Engineering

$7,414 + $600 = $8,014

Add Permit and Inspection Allowance

$8,014 + $500 = $8,514

Add a 15% Contingency

$8,514 × 15% = $1,277.10 Estimated mobile home tie-down cost: $8,514 + $1,277.10 = $9,791.10 The calculator’s likely budget range would be approximately:

• Low estimate: $8,812
• High estimate: $11,749

This example is for educational budgeting only. The assumed anchor count and unit rates do not establish the correct installation design for a specific home.