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.
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
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
Deal Size Distribution
Deal Flow Over Time
Financing Profile
Recent Comparable Deals
| Closed | State | Loan | Implied deal |
|---|---|---|---|
| Mar 2026 | NY | $3.3M | $3.8M |
| Mar 2026 | FL | $2.8M | $3.2M |
| Feb 2026 | WA | $900K | $1.1M |
| Feb 2026 | AZ | $1.4M | $1.7M |
| Feb 2026 | TX | $1.2M | $1.4M |
| Feb 2026 | TX | $250K | $294K |
| Jan 2026 | TX | $200K | $235K |
| Jan 2026 | NY | $500K | $588K |
| Jan 2026 | TX | $1.3M | $1.5M |
| Jan 2026 | MD | $965K | $1.1M |
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
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
Shows the niche's focus on tracking contract performance, profitability, and maintenance trends
Highlights monthly, quarterly, semi-annual, and yearly maintenance plan structures
Explains the value of scheduled maintenance programs to reduce downtime and repair costs
Acquisition Score
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
Buyer's Toolkit
Essential tools to get started
Some links may be affiliate links. We only recommend tools we'd use ourselves.
Ready to Buy? Start Here →
Largest business-for-sale marketplace in the US
SBA loans and business acquisition financing — get funded fast
ROBS financing — use retirement funds to buy a business tax-free
Bookkeeping for small business owners — hands-off financials
Some links may be affiliate links. We only recommend tools we'd use ourselves.
Get the full breakdown in your inbox
Weekly boring business breakdowns
One boring business. Real numbers. Every week. Free.