By Claire Wilson, Siteline

Diversification is one of the oldest strategies in the books for building a resilient construction business. If one market slows, another can help pick up the slack. But branching into new markets, project types, or geographies isn’t as simple as taking on more work.

Adding a new type of work may change how a subcontractor bills for it, how long it takes to get paid, how much cash is needed to get the work started, and what the team has to manage behind the scenes to keep it moving.

Those are important considerations in an industry where cash is already stretched thin. Siteline’s 2026 State of Subcontractor Billing Report found that 92% of subcontractors had to float payroll at least once in the past year, while 43% waited more than 90 days for final payment or retainage.

So, as you consider your next growth opportunity, it helps to understand what the new work will require—and make sure you’re set up to support it. These six questions are a good place to start.

1. Where should we begin?

Growth doesn’t have to start with a dramatic leap into an entirely new line of business. Often, the most practical opportunities are linked to the work you already know how to do. Choose something that builds on your existing skills, equipment, customer relationships, or market knowledge rather than diving headfirst into the deep end.

• Add service and maintenance work to create a steadier stream of smaller, recurring projects.
• Expand the scope you offer existing customers with related services your team already has the skills or equipment to perform.
• Follow your favorite customers into an adjacent market or location rather than entering one alone.
• Take on a smaller project in a new segment before committing significant labor, equipment, or working capital.
• Partner with another specialty contractor when an opportunity requires capabilities you aren’t ready to build in-house.

The overarching takeaway here is simple: start from your strengths.

2. How will this work change our cash cycle?

Once you’ve identified where you want to grow, the next question is what that work will do to your cash flow.

A move into public work, larger projects, or unfamiliar customers may affect when you can bill, how quickly payments move through the chain, and how much cash you need to carry the work. Longer projects can also tie up more money in retainage, while material-heavy scopes can require significantly more cash upfront.

Map those differences before you commit. Look at when payroll, materials, equipment, and overhead will go out, then compare that with when you can realistically expect progress payments. Don’t base this forecast solely on contract payment terms, either. Ask the GC about their typical payment timeline and review your own payment history with them if you have one.

This becomes even more important as you take on bigger projects. A job can be profitable on paper and still put you in a cash crunch if you have to cover too many costs for too long before getting paid.

3. Do we understand the customer and contract risk?

Understanding a GC’s payment history is a good place to start, but dig deeper before taking on the work. Research the company’s reputation and history of disputes, and talk to other subcontractors about their experiences working with them. You can also check a GC’s business credit through services like Experian Business, Equifax Business, or Dun & Bradstreet.

Tara Cristel, co-owner of Total Glass, talked about this when she joined us on the Billing & Chilling podcast. GCs routinely prequalify subcontractors to make sure they can handle a project, and she believes subs should be vetting GCs just as carefully. If they want to know whether you can handle the project, you should be able to find out whether they can pay their bills.

Extend the same scrutiny to the contracts. Review your subcontract for the terms that could put your business most at risk, including pay-if-paid or pay-when-paid clauses, suspension rights, retainage, indemnity, and price escalation. And ask for the GC’s prime contract with the owner. Understanding the terms upstream can show you what’s flowing down to your business—and where you may have room to negotiate.

4. What will this work require from our people and processes?

A new project type or larger contract may require different estimating expertise, additional skilled labor, more project management capacity, new equipment, or specialized training. New customers can also bring different billing portals, pay app formats, documentation requirements, and approval processes.

Expanding into a new state adds another layer. Preliminary notices, lien deadlines, waiver rules, prompt-payment protections, and retainage laws vary across states. And with 56% of subcontractors telling us they’ve missed a lien deadline at some point, adding another set of requirements to track can make an already complicated process harder.

This is where it really pays to involve the people who will actually be doing the work. When Dan Wies, president of Wies Drywall and Construction, joined us on Billing & Chilling, he talked about the importance of getting his team involved when the company tries something new. They know the existing process, where it breaks down, and what a proposed change will mean day-to-day. Their input can help surface challenges and opportunities you may not have considered—and give you a much clearer picture of what they’ll need to make the change work.

5. Can our business support the added growth?

A new opportunity doesn’t exist in isolation. It has to fit alongside the projects already on your books, so consider how much additional work the business can realistically carry at once.

Look at your existing backlog, working capital, access to credit, and other financial commitments before deciding how quickly to grow into a new area. You may have the cash to support one or two projects, for example, but taking on several at once could leave much less room for an unexpected expense—or another opportunity that comes along.

For bonded contractors, growth can also affect how much work you can pursue. Larger projects and a growing backlog can consume bonding capacity, so involve your surety and construction CPA early if the move will meaningfully change the size or type of work you take on.

You don’t have to go all in at once. If the opportunity makes sense, start at a manageable size and let the results guide how quickly you expand.

6. How will we know whether it’s working?

Once you start taking on the new work, compare the results with the assumptions you made going in. Revenue and margin matter, but so does whether the opportunity is panning out as expected across the rest of the business.

Look back at the questions you asked upfront. Is the client paying as expected? Is the work tying up more cash or retainage than anticipated? Is your team handling the added workload, or are new bottlenecks emerging? Your A/R and project data can help you see where reality lines up with the plan—and where it doesn’t.

Over time, those answers should give you a clearer picture of where to keep investing. A new segment with slightly lower margins may still be a strong addition if it pays reliably and fits easily into your operation. Another may bring in plenty of revenue but consistently tie up cash or require more resources than expected.

Whatever you do, grow from a strong foundation.

There’s no single right way to diversify a construction business. For one subcontractor, growth might mean adding service work. For another, it could mean moving into public projects or taking on larger contracts.

Whatever the opportunity looks like, the goal is to grow in a way the rest of the business can support. Start from what you already do well, understand what will change, and make sure the cash, people, and processes are there to carry the new work.

Done well, diversification gives you more than another revenue source. It gives you more options when the market changes—and a stronger business to weather it.

About the Author:

Claire Wilson is the co-founder and COO of Siteline, a billing software for subcontractors. Previously, she was a project manager at Tishman Construction in New York City, where she worked on major projects like Hudson Yards and JP Morgan’s Corporate Headquarters. She is an active CFMA San Francisco member, serves on the Bay Area Subcontractors Association board, and has spoken at numerous regional and national construction conferences. Claire holds a BS in Civil Engineering from Bucknell University.