Deal Sourcing for Search Funds: How to Build Real Deal Flow

Most people think buying a business is about the close. It's actually about the funnel. A typical self-funded searcher or search fund will touch thousands of companies to have a few hundred real conversations, sign a handful of LOIs, and close one deal. Sourcing — building that top of funnel — is the part that quietly decides whether you ever buy anything.

This is a practical guide to building deal flow as a searcher: where deals come from, which channels are worth your time, and how to run sourcing like a system instead of hoping the right business lands in your inbox.

The funnel math you can't escape

Sourcing is a numbers game with brutal conversion rates. The exact figures vary, but the shape is consistent:

• ✓Hundreds to thousands of companies identified or contacted
• ✓A minority that reply and have a genuine willingness to sell
• ✓A smaller set worth a real look and an offer
• ✓One deal that actually closes

The implication is simple: a thin top of funnel guarantees a long search. Everything below is about widening and qualifying that funnel without drowning in it.

Proprietary vs. brokered deal flow

Every deal reaches you one of two ways, and the trade-off matters:

• ✓Brokered (intermediated) deals come through business brokers, M&A advisors, and marketplaces. They're easy to find but competitive — the business is being shopped, often to many buyers, which pushes up price and pushes down your edge. You'll also wade through a lot of overpriced or picked-over listings.
• ✓Proprietary deals are ones you source directly from owners who aren't actively listed. They're far more work — you're creating the opportunity — but you face less competition, often get better terms, and can build genuine rapport with a seller who hasn't yet decided to run an auction.

Most searchers run both: brokered flow for volume, proprietary outreach for edge.

The sourcing channels that actually work

Business-for-sale marketplaces. BizBuySell, Axial, and similar platforms are the obvious starting point for brokered flow. Good for volume and for calibrating what businesses sell for; weak for exclusivity.

Business brokers and M&A advisors. Build real relationships with brokers in your target size and geography. A broker who knows your criteria will send you deals before they hit the open market. Be specific and responsive — brokers route deals to buyers who close.

Direct owner outreach. The core of proprietary search: build a target list of companies that fit your criteria and contact owners directly by email, letter, LinkedIn, or phone. It's a grind, but it's where the least-competed deals live.

Referrals and your network. Accountants, lawyers, wealth advisors, and bankers know owners thinking about selling before anyone else. Tell everyone in your network exactly what you're looking for.

Industry-specific channels. Trade associations, niche directories, and industry events surface owners in a focused vertical — valuable if you're running a thesis-driven search.

Build a target list, not a wish

Proprietary sourcing starts with criteria sharp enough to filter on:

• ✓Size — revenue and EBITDA range you can actually finance and run.
• ✓Industry — sectors you understand or can learn, ideally stable and unsexy.
• ✓Geography — where you're willing to operate.
• ✓Owner situation — age, tenure, and signals that a transition may be coming.

Turn that into a list, enrich it with contact and financial signals, and work it systematically in a CRM. Vague criteria produce a vague list and wasted outreach.

Run sourcing like a system

The searchers who close treat sourcing as a repeatable engine, not a series of one-offs:

• ✓A CRM or pipeline tracker for every company and conversation.
• ✓Templated-but-personal outreach, with disciplined follow-up (most replies come after several touches).
• ✓A weekly cadence of new contacts and follow-ups so the funnel never goes dry.
• ✓Simple metrics — contacts made, reply rate, conversations, offers — so you can see which channels are working.

Don't let diligence throttle your funnel

Here's the trap: a wide sourcing funnel only pays off if you can evaluate the deals that come back. Many searchers throttle their own top of funnel because they can't keep up with reading CIMs and financials on every promising lead — so good opportunities go cold while they're buried in one deal's documents.

That's the bottleneck Deal OS is built to remove. When a deal comes in, it reads the CIM, financials, and data-room documents and returns source-cited findings — so you can screen more opportunities quickly, decide which deserve a real Quality of Earnings and full due diligence pass, and keep a wider funnel moving without adding an analyst. Searchers and sponsors use it to review more deals without the review work capping how many they can source.

Frequently asked questions

What is deal sourcing? Deal sourcing is the process of finding and contacting businesses to potentially acquire — building the top of the funnel of opportunities a buyer evaluates. It spans both deals found through brokers and marketplaces and proprietary deals sourced directly from owners.

How do search funds find businesses to buy? Through a mix of channels: business-for-sale marketplaces, relationships with brokers and M&A advisors, direct outreach to owners who aren't listed, referrals from accountants and lawyers, and industry-specific networks. Most searchers run brokered flow for volume and proprietary outreach for less-competed deals.

What is proprietary deal flow? Deals you source directly from owners who are not actively listed for sale, rather than through a broker or marketplace. Proprietary deals take more work to create but typically face less buyer competition and can offer better terms.

How many businesses do you have to contact to close one deal? The conversion is steep. A typical search touches thousands of companies to have a few hundred conversations, sign a handful of LOIs, and close a single deal — which is why a wide, well-managed top of funnel matters so much.

Where can I find small businesses for sale? Start with marketplaces like BizBuySell and Axial and relationships with business brokers for brokered flow, then add direct owner outreach and referrals from your professional network for proprietary deals. Define clear size, industry, and geography criteria first so you can filter effectively.

Source wider without drowning in diligence

If your funnel is bigger than your capacity to review deals, book a 15-minute walkthrough of how Deal OS turns each incoming deal's documents into cited findings — so sourcing volume becomes an advantage, not a backlog.