City Market Insight

Best businesses to start in Union, MO

Top 5 opportunities ranked by demand, profitability, and breakeven — produced by 13 AI agents.

Executive summary

Union, Missouri, a growing exurban node in the St. Louis MSA (pop. 13,042, +1.4-1.6% annually), features a balanced economy with manufacturing at 24% of employment, construction 11%, retail 16%, healthcare 14%, and agriculture 5% ($148M Franklin County farmgate in 2025). Low cost of living (index 91.2), skilled trades concentration (CNC, welding, logistics), steady housing growth (12% YoY permits), and I-44/US 50 access create demand for practical B2B services addressing workforce succession gaps, equipment maintenance, and local supply chain support. With a strict $10,000 upfront budget constraint, the highest-potential opportunities are lean, owner-operator or micro-team service models that leverage existing local skills, require primarily tools, a vehicle, certification, insurance, and marketing, and avoid capital-intensive facilities or inventory-heavy operations. These businesses align with low-to-medium saturation categories, value-oriented consumer and B2B spending ($57,800 avg household expenditures), and unmet needs in ag support, trades, technical services, and maintenance. Financial outlook: Break-even tiers require $6,000-$10,000 upfront investment, delivering monthly revenue of $11,500-$15,500, monthly profit of $4,250-$12,350, and margins of 37-87% with breakeven in 1-3 months. Optimal tiers scale to $24,800-$42,500 invested for $21,500-$29,000 monthly revenue and $9,500-$18,250 monthly profit (margins 33-85%). Perfect tiers require $67,500-$110,000 for peak mon

Top 5 opportunities

Mobile Ag Equipment Repair

Owner-operated mobile service providing on-farm repair, maintenance, welding, and basic precision diagnostics for row-crop, livestock, and hay equipment. Starts with a used service truck, basic tools, and parts inventory stocked on-demand.

Farmers in the exurban fringe around Union lose expensive uptime when equipment breaks during the 190-200 day growing season with only 24 fragmented repair operators county-wide. Mobile Ag Equipment Repair is an owner-operated on-farm service delivering welding, maintenance, and basic diagnostics directly at the farm from a base in the exurban fringe. It targets 8-11% of the $12-19 million local ag support SAM for $280,000-$420,000 in annual revenue at scale with break-even in two months. With $148 million Franklin County farmgate output, 58% agricultural land, and rising equipment complexity, now is the right time to launch this mobile model in Union.

Startup: $32K
Monthly profit: $15K
Margin: 60%
Breakeven: —

Specialty Trade Contracting

Small contracting firm specializing in residential electrical, plumbing, and light steel erection for new single-family homes, renovations, and ag/light industrial outbuildings. Begins as owner-operator with basic tools and a van, subcontracting specialized work initially.

Twelve percent year-over-year housing permit growth is overwhelming local contractors and creating succession gaps for electrical, plumbing, and light steel work. Specialty Trade Contracting is a lean owner-operator firm focused on new homes, renovations, and ag outbuildings based in the suburban ring for optimal US 50 access. It captures 5-8% of the $21-46 million residential construction SAM to generate $220,000-$380,000 in annual revenue with break-even in two months. Given 11% construction employment, 68% homeownership, and fragmented competition, now is the right time to secure high-margin projects in this expanding Union market.

Startup: $43K
Monthly profit: $10K
Margin: 33%
Breakeven: —

Manufacturing Technical Design Services

Home-based CAD/CAM design, prototyping support, and basic engineering consulting for local metal fabricators, automotive suppliers, and ag equipment makers. Uses affordable software licenses and a laptop to deliver digital files and on-site troubleshooting.

Local metal fabricators and ag equipment makers lose time and money waiting on slow design support from St. Louis providers amid 24% manufacturing employment. Manufacturing Technical Design Services is a home-based CAD/CAM and engineering consulting business operating from the urban core to enable rapid local iteration. It secures 6-9% of the $8-14 million engineering SAM for $160,000-$290,000 annual revenue and break-even in one month at 87% margins. With succession gaps in 44 nearby shops, strong vocational CNC skills, and clear B2B demand, now is the right time to launch this high-margin service in Union.

Startup: $25K
Monthly profit: $18K
Margin: 85%
Breakeven: —

Home Health Support Services

Non-medical in-home companion care, transportation, and light personal assistance service targeting seniors and working families. Starts with owner and 1-2 certified aides, focusing on flexible scheduling and local referrals.

Thirteen point eight percent of Union residents over 65 plus growing working families need reliable non-medical companion care and transportation that current options do not fully cover. Home Health Support Services is a flexible in-home care provider starting with the owner and certified aides based in the urban core for fast response. It captures 5-8% of the $7-16 million local home care SAM to produce $190,000-$310,000 in annual revenue with break-even in two months. Supported by 14% healthcare employment and local certification pipelines, now is the right time to build recurring contracts in this steady-demand Union market.

Startup: $28K
Monthly profit: $12K
Margin: 46%
Breakeven: —

Mobile Fleet and Auto Repair

Mobile automotive and light truck repair focusing on fleet maintenance for manufacturers, contractors, and farms plus quick-turn consumer services (brakes, diagnostics, tires). Operates from a equipped van with on-site service model.

Manufacturers, contractors, and farms lose productivity when vehicles and fleets sit idle waiting for shop-based repairs. Mobile Fleet and Auto Repair is a van-based on-site service for fleet maintenance, brakes, and diagnostics positioned in the suburban ring along the US 50 corridor. It targets 4-7% of the $18-32 million automotive repair SAM for $210,000-$340,000 in annual revenue with break-even in three months. With 24% manufacturing employment, 17% household transportation spend, and limited mobile options, now is the right time to launch this fast-response model in Union.

Startup: $25K
Monthly profit: $10K
Margin: 42%
Breakeven: —

See what works in your city

Run a free Sellwhat analysis on any city, neighborhood, or county worldwide. No credit card.

Run my free analysis

No Guarantee of Accuracy. AI models can produce inaccurate, incomplete, outdated, or misleading outputs. Market data, economic indicators, demographic figures, revenue projections, cost estimates, and all other data points presented are approximations that may not reflect current real-world conditions. Sellwhat and Elbrus LLC make no representation or warranty, express or implied, regarding the accuracy, reliability, completeness, or timeliness of any AI-Generated Content. Read our full AI terms.