At some point every growing agent hits the same wall. You cannot personally chase every lead and still serve your clients, so you need help with the front end of the pipeline. The two obvious options are hiring an in-house ISA (inside sales agent, basically a dedicated caller and follow-up person) or working with a lead generation agency. Both can work. They are just very different bets, with different costs and different risks. Here is an honest look at each, including the parts that do not show up on the price tag.
The in-house ISA route
Hiring your own ISA means bringing a person onto your team whose job is to call leads, follow up, qualify, and book appointments for you. When it works, it is great. You get someone dedicated to your business, sitting in your corner, who learns your market and your voice over time.
What is good about it
- Full control. You decide the scripts, the hours, and the standards.
- Dedicated attention. The person works only your leads, not a shared pool.
- Deep familiarity. Over months they learn your listings, your neighbourhoods, and your style.
- Direct relationship. You can coach and adjust in real time.
The hidden costs nobody mentions
The salary is the visible cost. The hidden ones are where agents get caught out. You have to recruit, which takes time and usually a few bad hires before a good one. You have to train, and a caller who is learning is a caller who is converting at half speed. You have to manage, which means your own hours go into coaching, monitoring, and motivation. You have to buy the tools: a dialer, a CRM, lead sources for them to actually call. And then there is turnover, which is brutal in calling roles. When your ISA quits, and many do, you are back to square one, hiring and training again while your pipeline stalls.
None of that means it is a bad idea. It means the true cost of an in-house ISA is a lot more than the wage line, and the management load is real. If you are already stretched, adding a direct report can solve one problem and create another.
The lead generation agency route
Working with an agency means an outside team handles the lead generation, and often the qualification and follow-up too, as a managed service. You are buying a system and a set of skills rather than hiring a person.
What is good about it
- No hiring risk. No recruiting, no training, no replacing someone who quits.
- Expertise on day one. The team already knows how to run ads and build follow-up.
- Tools included. The dialer, the CRM, the ad accounts, and the automation come built in.
- It scales with you. Turning the volume up or down does not mean hiring or firing.
- Your time stays yours. You manage results, not a person’s daily workload.
The trade-offs to be honest about
An agency is not your employee, so you give up some of the direct, minute-to-minute control you would have with an in-house hire. Quality depends entirely on choosing a good agency, because a bad one will sell you volume and disappear. And the monthly fee can look higher than a wage at a glance, until you add back all the hidden costs of doing it yourself. The fix for the control worry is simple: pick an agency that is transparent, reports clearly, and treats your business like it matters.
When each one makes sense
An in-house ISA tends to make sense when your lead volume is already high and steady enough to keep one person busy all day, when you genuinely have the time and temperament to manage people, and when you want total control over the process. If you are running a team and building infrastructure for the long haul, owning that function in-house can be the right call.
An agency tends to make sense when you do not yet have steady lead flow to hand a caller, when you would rather not become a manager, when you want a working system quickly without the hiring gamble, and when you would rather spend your energy closing than coaching. For most solo agents and small teams who are growing but not yet running a call centre, that describes the situation pretty well.
The balanced answer for most growing agents
Here is the honest middle. For most agents who are growing but not yet running a full sales operation, starting with an agency is the lower-risk move. You get a proven lead and follow-up system without betting on a hire, learning to manage callers, or buying a stack of software. Once your volume is high and predictable, and you have the management capacity, adding an in-house ISA on top can be a smart next step. The agency does not compete with that future hire. It de-risks it, because by then you already know what good looks like and what actually converts in your market.
If you are weighing this up right now and want a straight opinion on which fits your stage, that is exactly the kind of thing we are happy to talk through. Book a call and we will give you an honest read on whether an agency, an in-house hire, or a mix of both makes the most sense for where your business is today. You can also see how our managed system works on our services page.
Frequently asked questions
What does an ISA actually do for a real estate agent?
An ISA, or inside sales agent, is someone who handles the early part of the sales process so you do not have to. That usually means calling new leads, following up with old ones, qualifying people, and booking appointments onto your calendar. A good ISA is basically your phone and follow-up engine. The catch is that you have to find, train, pay, and manage that person, and replace them when they leave.
Is an agency or an in-house ISA cheaper?
On paper an ISA can look cheaper than an agency retainer, but that comparison usually misses the hidden costs: recruiting time, training, software, management, payroll overhead, and the cost of turnover when they quit. An agency rolls the system, the tools, and the expertise into one fee with no hiring risk. The cheaper option depends on your volume and how much management time you actually have.
Can I do both at the same time?
Yes, and plenty of growing agents eventually do. A common path is to start with an agency to get a working lead and follow-up system in place, then add an in-house ISA later when your volume is high enough to keep one busy and you have the management capacity. The agency proves what works first, which makes the eventual in-house hire far more likely to succeed.