Almost every industry sells to the government — landscaping, IT, construction, catering, cleaning, security, trucking, medical supplies, printing, and dozens more. The government buys roughly $500 billion a year in goods and services, and a large share is steered toward small businesses. But the right *strategy* — where to look, how competitive it is, and where to start — depends a lot on your line of work. This is a starting map by industry, plus how to break in for each.
First: find your NAICS code
Before anything else, identify your NAICS code — the government's label for your industry. Every contract is tagged with one, so it's how the right opportunities find you, and many small-business size standards are defined by it. You can (and often should) have more than one — one for each line of business you genuinely perform. Get this right and the rest of your search gets dramatically easier.
Construction & skilled trades
Volume: very high, at every level of government. Facility repair and renovation, roofing, HVAC, electrical, plumbing, painting, paving, and demolition are bought constantly by federal agencies, states, counties, cities, and school districts.
- Why it's a great starting point: local and state agencies issue a steady stream of smaller, less-competitive jobs — ideal for a first win and building past performance.
- Watch for: bonding requirements on larger jobs, prevailing-wage rules, and mandatory site visits. (See how to read an RFP.)
- Where to look: SAM.gov for federal, plus your state and local portals — local construction work is often the easiest entry.
IT & professional services
Volume: among the largest federal categories. IT support and help desk, software, cybersecurity, cloud/hosting, data services, plus management consulting, engineering, and research.
- Why it's attractive: huge budgets, frequent task orders, and strong small-business set-asides.
- Watch for: more competition and sometimes security/clearance requirements; your capability statement and differentiators matter most here.
- Where to look: heavily federal, but states and large cities buy IT too.
Facilities, janitorial & grounds
Volume: steady and recurring everywhere. Commercial cleaning/custodial, landscaping and grounds maintenance, pest control, waste collection, and general facilities maintenance.
- Why it's a great starting point: these contracts recur (often annually), are frequently open to or set aside for small businesses, and are relationship-friendly at the local level.
- Watch for: labor/wage requirements and performance standards.
- Where to look: especially strong at the state, county, city, and school-district level.
Supplies, food & transportation
Volume: massive, often fast-moving. Office supplies and furniture, uniforms and apparel, medical and lab supplies, food service and catering, trucking and freight, courier, and warehousing.
- Why it's attractive: many buys fall under the $250,000 Simplified Acquisition Threshold, meaning faster, smaller awards that are often reserved for or steered toward small firms.
- Watch for: strict product specs, delivery timelines, and sometimes "brand name or equal" requirements.
- Where to look: federal (including defense supply) and state/local cooperative purchasing.
Specialized & professional fields
Plenty of niche industries sell to government too: security guard services, staffing, training and instruction, translation/interpretation, marketing, accounting and legal services, vehicle and equipment maintenance, welding and fabrication, and aircraft/aviation support. The same rules apply — find your NAICS, check set-asides, and start where competition is lowest.
Where to start, by competition
For most small businesses, the winning strategy is: start where competition is lowest and closest to what you already do, then expand.
- Lowest barrier: state and local work in trades, facilities, and supplies — fewer bidders, smaller contracts, relationship-driven.
- Then layer in federal as you build past performance and get comfortable with the process.
- Use set-asides wherever you qualify to shrink the competition further. (See which set-aside certification is worth getting.)
(For the broader first-win playbook, see how to win government contracts as a small business.)
How to break in (regardless of industry)
1. Register in SAM.gov (free) and on your state/local portals.
2. Nail your NAICS codes so you're matched to the right contracts.
3. Build a one-page [capability statement](/blog/capability-statement-template) tailored to what agencies in your field buy.
4. Start with smaller, local, set-aside contracts to win and build a track record.
5. See new opportunities daily so you catch fits in time. (See why a daily alert beats manual searching.)
The shortcut
Rather than guessing which of the thousands of portals list contracts in your field, match your industry once and let the relevant federal + state/local contracts come to you — labeled, deadlined, and filtered to what you can actually bid on.
FAQ
What industries can win government contracts?
Almost all — construction and trades, IT and professional services, facilities/janitorial/grounds, supplies, food, transportation, security, staffing, healthcare supplies, and many niches. The government buys a huge range of goods and services.
Which industry is easiest to start with?
For most small businesses, local trades, facilities, and supplies work tends to have the lowest competition and smallest contracts — a good first-win category. Start local, then expand to federal.
How do I find government contracts for my specific industry?
Identify your NAICS code(s), then filter SAM.gov and your state/local portals to that code and your location — or use a tool that matches by industry automatically.
Do I need certifications to win in my industry?
Not always, but set-aside certifications (if you qualify) reduce competition in any industry. General small-business status alone opens many set-asides once you're registered.
Are government contracts only federal?
No — state, county, city, and school-district contracts exist in every industry and are often the best place for a small business to start. (See state & local contracts.)