A double wide foundation typically costs $6,000-$20,000, with an average near $12,000 for a standard installation on a prepared residential lot. The final price depends mainly on foundation type, home size, soil and slope, local code requirements, and how much site preparation is needed.
| Item | Low | Average | High | Notes |
|---|---|---|---|---|
| Installed foundation | $6,000 | $12,000 | $20,000 | Typical double wide; standard access and prepared site |
| Pier-and-beam system | $3,000 | $6,500 | $11,000 | Anchors and perimeter work affect price |
| Concrete slab | $9,000 | $15,000 | $25,000 | Usually priced by slab area and reinforcement |
| Crawlspace | $8,000 | $14,000 | $24,000 | Varies with wall height, drainage, and access |
| Basement | $25,000 | $40,000 | $65,000+ | Excavation and waterproofing can raise the total |
What a double wide foundation usually costs
For a typical 1,400-2,000-square-foot double wide, a basic pier or block foundation may run $3,000-$11,000. A more substantial engineered permanent foundation commonly costs $8,000-$20,000, while a slab or crawlspace can cost more when it includes extensive concrete, drainage, or grading. Basement foundations are a separate, higher-cost choice.
Most buyers should budget about $8,000-$16,000 for a conventional permanent foundation, before unusual site work. These ranges generally cover foundation materials and installation, but may not include delivery, utility connections, extensive excavation, landscaping, or the home’s transport and setup.
Per-square-foot comparisons are useful but imperfect because anchors, perimeter supports, engineering, and mobilization create costs that do not scale evenly with floor area. A rough installed benchmark is $4-$12 per square foot for basic support work, $7-$15 for many slabs, and $6-$14 for crawlspaces. Basement work commonly reaches $18-$35 or more per square foot.
Assumptions: 1,400-2,000-square-foot home, ordinary residential access, standard materials, and no major rock removal or unusual soil correction. Local quotes may fall outside these ranges.
How anchors, concrete, and labor shape the quote
A foundation estimate may bundle several tasks. Ask the contractor to separate the foundation system from site preparation and home installation so that bids can be compared on the same scope. Site work and engineering are common reasons two apparently similar foundation quotes differ by several thousand dollars.
| Quote item | Typical price | What can change it | Usually included? |
|---|---|---|---|
| Piers, blocks, or footings | $2,000-$8,000 | Count, spacing, concrete depth, and load requirements | Yes, for the selected system |
| Anchors and tie-downs | $800-$3,000 | Wind zone, soil, anchor type, and installation access | Often, but confirm in writing |
| Concrete slab or perimeter work | $5-$12 per sq. ft. | Thickness, reinforcement, finish, and concrete access | Only when specified |
| Labor and equipment | $2,000-$7,000 | Crew size, excavation, travel, and job duration | Usually |
| Engineering and permits | $500-$2,500 | Local review, stamped plans, and inspection fees | Varies by jurisdiction |
| Grading and drainage | $500-$5,000 | Cut and fill, runoff control, and soil export | Frequently excluded |
Labor estimates may use a crew rate or be built into a fixed bid. For budgeting, foundation labor can represent roughly $2,000-$7,000, depending on the system and site. As a planning example, 40-80 crew-hours at $50-$90 per labor-hour equals $2,000-$7,200 before materials and equipment.
Which foundation type fits the home and budget?
Pier-and-beam or approved block systems are often the least expensive, particularly on level ground with suitable soil. They raise the home above grade and can make utility access easier. However, a low initial quote is not useful if the system fails local requirements or does not meet the lender’s, insurer’s, or homeowner’s intended use.
A slab creates a solid concrete base and can suit level sites, but plumbing penetrations, reinforcement, and concrete access affect its price. Crawlspaces provide room beneath the home and can accommodate uneven terrain, though taller walls, ventilation, moisture control, and drainage add expense. A basement provides usable below-grade space but requires substantially more excavation and waterproofing.
| Type | Typical installed range | Approximate unit rate | Cost trade-off |
|---|---|---|---|
| Pier or block | $3,000-$11,000 | $2-$6 per sq. ft. | Lower upfront cost; requires approved anchoring |
| Slab | $9,000-$25,000 | $7-$15 per sq. ft. | Concrete and site access drive the total |
| Crawlspace | $8,000-$24,000 | $6-$14 per sq. ft. | Wall height and moisture management matter |
| Basement | $25,000-$65,000+ | $18-$35+ per sq. ft. | Excavation and waterproofing dominate |
Ranges overlap because the same foundation type may be basic or highly engineered. A contractor should identify whether a price includes perimeter support, marriage-line support between the two sections, tie-downs, skirting, and any required moisture barrier. Compare the specified system and included work, not just the foundation label.
How soil, slope, and wind requirements change pricing
Soil and site conditions can shift a quote more than a modest change in home size. Loose fill, expansive clay, a high water table, or poor bearing capacity may require deeper footings, additional supports, engineered plans, or soil improvement. A basic site may need little grading, while a sloped lot can require substantial cut-and-fill work or retaining features.
Home dimensions also matter. A 1,600-square-foot double wide has more perimeter and support points than a 1,200-square-foot model, but the cost does not rise in a simple one-to-one ratio. Ask whether the estimate is based on the actual manufacturer’s setup instructions and the home’s loaded dimensions, not only its advertised floor area.
Wind exposure and local design criteria affect tie-downs and anchoring. In areas with higher wind requirements, an approved system may need additional anchors or stronger connections; this can add roughly $500-$3,000 compared with a simpler installation. Frost depth can also matter: footings in colder locations may need to extend 36-48 inches or more below grade, increasing concrete and digging costs.
Get the site evaluated before relying on a low preliminary estimate. A soil test may cost about $500-$1,500, and a foundation design or engineering review may add $500-$2,000. These expenses can identify requirements early and help avoid a change order after equipment and materials have been scheduled.
How long installation takes and what labor covers
Once plans, permits, materials, and the site are ready, a straightforward pier or block installation may take 1-3 days. A slab project typically takes several days of active work, followed by curing time before loading; full scheduling may span 1-3 weeks. Crawlspaces and basements often need 1-3 weeks or longer, depending on excavation, concrete work, drainage, and inspections.
A small crew may include an operator, concrete or foundation workers, and a lead installer. Labor and equipment charges can rise when a site is difficult to reach, when the contractor must make multiple trips, or when work has to pause for inspections or weather. The foundation contractor may not be the same company that transports and levels the manufactured home.
Clarify the handoff between the foundation crew and the home installer. Some quotes cover only construction of the foundation; others include setting, leveling, and anchoring the home. Confirm who is responsible for the marriage line, final tie-down inspection, and correcting height or level issues before signing.
Regional foundation prices from rural lots to cities
Labor, concrete delivery, permitting, and contractor availability vary by location. As a broad comparison, a prepared rural lot in a lower-cost market may come in 10%-20% below the national midpoint. Major metro areas and high-cost coastal markets may run 15%-30% above it, especially where labor, concrete delivery, or inspection fees are expensive.
Climate and local building requirements also influence the comparison. Colder northern areas may need deeper footings or frost protection, while some coastal or storm-exposed locations have stricter anchoring requirements. Remote properties can have higher delivery charges or minimum trip fees, even if local labor rates are relatively low.
These percentages are planning estimates, not fixed regional price schedules. For a $12,000 typical foundation budget, a 15% discount would put the estimate near $10,200, while a 25% premium would put it near $15,000. Compare at least three bids from contractors familiar with manufactured-home foundation requirements in the same county.
Permits, grading, and other charges outside the base price
Permit and inspection charges commonly total $200-$1,500, though local rules can require additional engineering or review. Some jurisdictions require documentation that the foundation meets applicable manufactured-home standards, local wind or seismic criteria, and the home manufacturer’s installation instructions. Fees and required documents vary, so the local building department is the best source for the applicable rules.
Site preparation is a frequent exclusion. Basic leveling or light grading may cost $500-$2,000; significant grading, soil export, or drainage work may add $2,000-$8,000 or more. Rock excavation, retaining walls, culverts, or a difficult equipment route can push the price higher. Concrete delivery may also carry a short-load or remote-location charge, often around $100-$400 per trip.
Removal of an old foundation, if needed, can add about $1,000-$5,000 for ordinary demolition and disposal. Extensive concrete removal or contaminated material costs more. Utility trenches, septic work, electrical connections, steps, skirting, and porches should be listed separately because they are not necessarily part of a foundation contract.
Request a written list of exclusions, allowances, permit responsibilities, and change-order rates. That list helps distinguish a complete installed price from a foundation-only bid and makes unexpected site charges easier to evaluate.
Ways to lower a double wide foundation bill
Choose a foundation system that satisfies local requirements without paying for features the site does not need. A slab or basement is not automatically a better value than an approved pier system; conversely, choosing the cheapest system without checking engineering and lender requirements can lead to expensive revisions. Confirm the required system before ordering materials.
Reduce avoidable site costs by clearing access, identifying underground utilities, and arranging grading early. A level, accessible site can reduce equipment hours and extra trips. Do not perform excavation or compaction yourself unless the contractor confirms the specifications and accepts responsibility for the prepared surface.
Get itemized quotes using the same home dimensions, foundation type, anchor requirements, and site assumptions. Compare material quantities, labor, equipment, engineering, permits, and cleanup rather than choosing by total alone. Ask whether scheduling the foundation with the home setup could avoid duplicate mobilization, but verify that each contractor’s scope is clearly assigned.
Keep the scope stable and approve upgrades only when they address a documented requirement. For example, added drainage may be worthwhile on a wet site, while premium finishes or extra concrete beyond the engineered design may not improve structural performance. A written design and inspection record can also help prevent disputes about what the quoted price was meant to include.