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BIZBITE

Dock & Door Service

If warehouse doors stop working, the whole building stops making money

Bottom line

Worth studying, but do not buy without strong local proof.

Dock and door service businesses install, repair, and maintain loading dock equipment, overhead doors, levelers, vehicle restraints, and warehouse access systems. The surprising angle is how mission-critical the niche is: when a dock door fails, receiving and shipping can stall immediately, so customers buy preventive maintenance contracts and pay emergency rates without much debate.

48
Acquisition score
Fair

Avg Revenue

$1.2M

Profit Margin

27%

Acquisition Multiple

2.8x - 5x

Startup Cost

$40K - $250K

How It Works

Technicians perform scheduled preventive maintenance, emergency repairs, parts replacement, and new equipment installs for warehouses, manufacturers, food distributors, and logistics centers. Revenue comes from maintenance contracts, hourly service calls, parts markup, and project installs. Once a site is under contract, churn tends to stay low because safety and uptime matter more than shaving a few dollars.

Revenue Range

Low End
$300K
Typical
$1.2M
High End
$4.0M

Real Acquisitions in This Category

SBA 7(a) change-of-ownership loans · NAICS 811310 · Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance

Deals tracked
142
59 in last 24 mo
Median loan
$779K
$250K–$1.6M p25/p75
Implied deal size
$916K
median · ~85% LTV
Charge-off rate
not enough resolved loans

Deal Size Distribution

<$150K
18
$150K–500K
33
$500K–1M
35
$1M–2M
33
>$2M
23

Deal Flow Over Time

12-month momentum
-31.4%
deal volume vs prior 12 mo
Median loan Δ
+64.4%
24 recent · 35 prior

Financing Profile

Median rate
9.50%
22% fixed · last 24 mo
Median term
120 mo
standard 10-yr
Collateralized
0%
of loans secured
Median jobs
10
supported per deal
Top lenders in this space
Live Oak Banking Company18
The Huntington National Bank15
First Internet Bank of Indiana5
First National Bank of Pennsylvania5
Beacon Bank and Trust5
Where deals happen
TX20
CA13
PA8
CO8
FL7
MI7
IL6
OH6
OR5
MO5

Recent Comparable Deals

ClosedStateLoanImplied deal
Mar 2026NY$3.3M$3.8M
Mar 2026FL$2.8M$3.2M
Feb 2026WA$900K$1.1M
Feb 2026AZ$1.4M$1.7M
Feb 2026TX$1.2M$1.4M
Feb 2026TX$250K$294K
Jan 2026TX$200K$235K
Jan 2026NY$500K$588K
Jan 2026TX$1.3M$1.5M
Jan 2026MD$965K$1.1M
Volume rank #54/544Deal-size rank #229/544Momentum rank #275p90 loan: $2.4MData as of Mar 2026

Source: SBA 7(a) FOIA dataset, filtered to acquisitions (loans where business age is "Change of Ownership"). Implied deal size assumes an 85% loan-to-purchase ratio, a common SBA change-of-ownership structure. Charge-off rate shown only when 10+ loans have resolved (paid in full or charged off). Interest rates reflect last 24 months only. Actual deal values vary with equity injections, seller financing, and working capital terms.

Pros

  • +Strong recurring maintenance revenue from industrial customers
  • +Emergency repairs command premium pricing
  • +Customer relationships are sticky once equipment records and schedules are in place
  • +Natural cross-sell into doors, levelers, restraints, and access systems

Cons

  • -Requires technicians comfortable with industrial safety risks
  • -Parts inventory and dispatch complexity can grow quickly
  • -Sales often require trust with operations managers and facility teams

Best For

Industrial service operators who like contract revenue and mission-critical repair work

Operating Costs

Core costs are service vans, technician labor, safety gear, insurance, parts inventory, dispatch software, and after-hours service coverage. Profitability improves with contract density and fast parts turnaround.

SBA Financing Estimator

Adjust the deal — see if it cash flows after debt service

$-3357/mo
after debt service
Deal price — $2.8M
Range: $2.8M (2.8×) to $7.2M (5×+)
Down payment — 15% ($414K)
SBA minimum equity injection is 10% for change-of-ownership
Interest rate — 9.50%
SBA median for this category: 9.5%
Loan term — 10 years (120 mo)
SBA median for this category: 120 months
Down payment
$414K
15% equity injection
Loan amount
$2.3M
85% SBA-financed
Monthly payment
$30K/mo
$1.3M total interest
Monthly profit
$27K/mo
at 27% margin
Monthly cash flow after debt service
$-3357/mo
Margin does not cover debt service at these terms. Lower the deal price, increase the down payment, or extend the loan term.

Estimates only. Excludes owner compensation, capex, working capital draws, and taxes. Margin assumes average occupancy and volume. Actual SBA terms vary by lender and borrower profile.

Where to Buy

ServiceTitan – Dock and Door Software

Shows the niche's focus on tracking contract performance, profitability, and maintenance trends

Wolter – Dock and Door Service & Support

Highlights monthly, quarterly, semi-annual, and yearly maintenance plan structures

Wiese – Dock and Door Service

Explains the value of scheduled maintenance programs to reduce downtime and repair costs

48/100Fair

Acquisition Score

Profit margin
18/30
Entry multiple
14/25
Market depth
8/20
Risk (charge-off)
8/15
Deal momentum
0/10

Scores margin (30), entry multiple (25), SBA market depth (20), category risk (15), and deal momentum (10). Higher = better acquisition candidate.

Quick Facts

Category
service
Difficulty
4/5
Buy price
$3.4M$6.0M

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