Lead generation agency vs an in-house SDR

In short: Hire an SDR when outbound will drive growth for years, the sale is technical and you have a sales leader to coach them. Use an agency to test a market before hiring, start sooner, or offload research-heavy signal monitoring, while your team approves messages and owns the data and process.

An in-house sales development representative (SDR) is better when outbound prospecting is a permanent, central part of your growth, your offer needs deep product knowledge, and you have someone who can manage, coach and keep them busy. A B2B lead generation agency is better when you want to start without a hire, test whether a market or a signal works, or hand off a specific piece of work, such as monitoring and research, that does not need a full-time person. Plenty of companies do both.

This page sets out the trade-offs honestly, including the cases where we would tell you to hire rather than use us.

The quick comparison

What an SDR actually costs

Salary is the obvious cost, but not the only one. Budget for:

• Pay and employer CPF contributions. For a benchmark, use the Ministry of Manpower’s Occupational Wage tables, which publish wage percentiles by occupation and industry. We do not quote a figure here, because the right comparison depends on the occupation and industry you pick.
• Recruitment time. Writing the role, interviewing and onboarding take weeks of a manager’s time.
• Ramp-up. A new SDR needs to learn your product, customers and market before their outreach is any good.
• Tools and data. Contact data, a CRM, sending tools and any signal sources.
• Management. Someone has to set targets, review messages, coach and keep the pipeline honest.
• Turnover. If the person leaves, much of that investment leaves with them unless the process is written down.

An agency fee covers a defined scope instead. Compare like with like: what the fee includes, what you still have to do, and who owns the data and process at the end.

When in-house is the better choice

These are the situations where we would advise hiring.

• Outbound is your main growth engine. If most new revenue will come from prospecting for years, building the skill inside the company is worth the investment.
• The sale is technical or long. When prospects ask detailed questions in the first conversation, someone who lives with the product every day will do it better than an outsider.
• Relationships are the product. In some markets, buyers expect to deal with the same person from first contact onwards.
• You can manage the role. A capable sales leader with time to coach makes an SDR far more effective. Without one, a new hire often struggles.
• You have enough volume to keep them busy. A full-time person needs a full-time pipeline of accounts to work.

When an agency is the better choice

• You want to test before you hire. An agency can show you whether a market, segment or signal produces conversations before you commit to headcount.
• The work is research-heavy and repetitive. Watching for contract awards, hiring posts and expansions, checking each account and finding the right person is time-consuming. It is also the work that slips when a salesperson is busy.
• You need it now. An agency can usually start sooner than a new hire can ramp up.
• You sell into Singapore from overseas. A local partner can handle the market knowledge, signals and compliance while your team handles the conversations.
• Your volume is uneven. If you need intense prospecting for a launch or a season, and less afterwards, a flexible scope is easier than a permanent role.

Questions to ask any agency

Whether you talk to FYAdvisers or anyone else, ask:

1. Who approves the messages? You should see and sign off what goes out under your name.
2. Who owns the data and the process? Contact lists, research and templates should be yours at the end.
3. What exactly is measured? Agree it up front, and be wary of guaranteed meeting numbers.
4. How are replies handed over? Replies should reach your team quickly, with context.
5. How is compliance handled? In Singapore that includes the PDPA and the Do Not Call provisions. PDPC’s DNC guidelines exclude genuine business-to-business marketing messages sent to an organisation for its own purposes, but not marketing to a person for their personal use. Our PDPA and DNC guide covers the details.

The hybrid option

The split we see as most practical is this: the agency does the monitoring, research and first drafts; your SDR, salesperson or founder approves the outreach and runs every conversation that comes back. Relationships and product knowledge stay in-house. The repetitive research sits outside.

That is how FYAdvisers’ signal-based lead generation service is designed. We track the signals, research the account and contact, draft outreach tied to the signal for your approval, and hand replies to your team. FYAdvisers’ founder, Fiona Wang, spent nearly three decades in B2B sales and key account management before starting the company in 2026, so the hand-off is designed around how a salesperson actually works.

A simple way to decide

• No salesperson yet, founder selling: fix inbound response first, then consider an agency to feed the founder well-researched conversations.
• One salesperson, stretched: an agency handling signals and research frees their time for selling.
• A sales team with a leader, outbound central to the plan: hire an SDR, and consider outside help only for specialist signal work.

If you are still deciding how to approach outbound at all, read signal-based vs traditional cold outreach first.