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TLDR: An ISA bridges the gap between leads and sales, but they are an expensive, high-turnover investment that fails without a strict handoff process. Only hire one if you have the lead volume to justify the cost and the discipline to manage the handoff.
Here's how it usually goes: a buyer registers on your website at 7pm on a Thursday. Your agents are wrapping up showings, driving home, putting the kids to bed.
Nobody calls.
By Friday morning, that lead has already booked a consultation with a competing team that responded within the hour. This is the lead follow-up problem, and it's why the real estate ISA role exists.
An ISA (Inside Sales Agent) is the person on your team whose entire job is making sure that doesn't happen.
If you're running a growing team and leads are slipping through because agents are too busy to follow up, this article will help you understand the role fully before deciding whether to hire one.
Think of an ISA as your team's dedicated phone person. Not a receptionist, not an admin. A trained sales specialist whose only job is working leads from first contact to ready-to-show.
Here's what an inside sales agent handles day-to-day:
One thing to get clear before you hire, an ISA is a phone-based, office-focused role.
They're not attending showings, not replacing your agents, and not running your CRM as an admin function. They're the filter between your marketing spend and your agents' time.
Don't confuse an ISA with a VA. A virtual assistant handles admin: scheduling, email management, transaction coordination. An ISA is a sales specialist. The skills are different, the compensation is different, and treating one like the other is a fast way to get neither job done well.
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There's no single right way to wire an ISA into your team.
The three models below cover how most teams do it, and knowing which fits your setup will save you a lot of trial and error. Before picking a model, it's worth understanding how most teams lose leads in the first place, because the model you choose should directly address your specific leak.
Which one you choose depends on two things:
Let's talk numbers, because this is where a lot of teams get surprised.
Most ISAs earn a base salary between $40,000 and $50,000 per year, plus performance bonuses that bring total annual compensation to the $55,000-$65,000 range.
Here's what's not on the job posting. Add employer payroll taxes (roughly 7-8% on top of salary), health benefits if you offer them, a CRM seat, a calling platform licence, and four to six weeks of onboarding where your ISA is learning the system rather than producing.
The real first-year cost typically runs closer to $75,000-$85,000.
Then there's the turnover problem, which almost no ISA hiring guide mentions honestly.
The average ISA stays 6-12 months before moving on to a field agent role or another team offering better commission splits.
That means many brokerages are effectively re-hiring and re-training annually. Replacing a mid-level employee typically costs around 33% of their annual salary in recruiting, onboarding, and lost productivity time.
This isn't a reason to never hire an ISA. It's a reason to go in with your eyes open about what you're actually committing to you've sunk too much money into it.
Let's be clear, this is no one size fits all but you will pay more for top talent.
A typical structure might pay $42,000 base with a $75 bonus per completed appointment and a 5% commission split on buyer-side closes.
Some teams use a tiered bonus structure that increases the per-appointment rate once the ISA hits 25 or more appointments per month.
At the end of the day, you need to provide a base and some sort of incentivization structure to keep your ISA hungry. This could be an appointment quota, payment per meeting book or even part of the commission on deals they helped close.
You can hire the best ISA in the world or deploy the most sophisticated AI chatbot, but if your internal handoff protocol is broken, you are simply paying to watch leads evaporate.
Handoff friction occurs when the ISA (the "Setter") and the Agent (the "Closer") aren't in total lockstep. To prevent your team from treating ISA appointments like "suggestions" rather than "contracts," you must solve these three points of failure:
Nothing kills a lead's trust faster than having to repeat their entire life story to an agent who clearly didn't read the ISA’s notes.
When a lead doesn't show up for a Zoom or a listing appointment, agents usually blame the ISA for "setting a weak lead." When an agent misses the call, the ISA loses all credibility with the prospect.
Most teams fail because they view the ISA as a vending machine: you put leads in, you get appointments out. Without a feedback loop, the ISA keeps setting "bad" appointments, and the agent grows resentful.
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Scripts get a bad reputation because most people picture a monotone recitation.
That's not what a good ISA script is.
Instead it should be used as a framework, to ensure your ISA covers the right ground in every conversation without having to think about it under pressure.
Here are the four categories your ISA needs scripts for:
The best ISAs treat scripts as a starting point.
In the first month, they'll follow them almost word for word. By month three, they'll adapt naturally while still hitting the same key questions. Budget three or more hours per week for role-playing during onboarding.
Most ISA hiring guides skip this question entirely. That's a problem, because hiring an ISA at the wrong time is one of the more expensive mistakes a growing team can make.
💡 Before you post the job listing, run through these four questions:
1. Are you generating at least 350 inbound leads per month? Below that volume, a well-organised agent can handle their own follow-up. The ISA salary won't pay for itself if there isn't enough pipeline to justify the role.
2. Are your agents consistently failing to respond within 24 hours? If yes, the problem is real and the ISA role makes sense. If the answer is "sometimes," fix the process and accountability systems before you hire a person to cover for a discipline gap.
3. Do you have budget for a recurring role, not a one-time hire? Model the cost at 18 months minimum, not 12. Include onboarding time, benefits, and a realistic replacement cycle.
4. Are you ready to manage this person actively? An ISA without an accountability systems degrades fast. Build your KPIs before day one: minimum dials per day (most coaches recommend 80-100), contacts made, appointments set, and show rate. If you don't have those defined yet, define them first.
If you answered no to any of these, a part-time or virtual ISA is the smarter starting point.
Here's the honest version of this conversation, which is different from both the hype and the fear.
AI tools are genuinely good at the parts of ISA work that are high-volume, time-sensitive, and repetitive.
What AI can't do yet is have a real phone conversation with a sceptical prospect and build enough trust in seven minutes to get them to show up to a listing appointment.
Reading hesitation in someone's voice, adjusting your approach mid-call, handling the "my brother-in-law is an agent" objection in real time: that's still a human skill set.
The model that top-performing teams are moving toward isn't AI or ISA. It's both.
AI handles the initial response to warm up the lead while the human ISA handles live phone work to validate the details & route it to the right agent.
A human ISA costs $55,000-$65,000 per year. Most AI chatbots start at $100-200 per month. For teams not yet at ISA scale, a chatbot is often the right starting point.
Based on our 2025 report, 74% of conversations end in a contact capture or meeting request. As such, chatbots won't replace an ISA but instead augment their ability to route and validate leads more efficiently.
This becomes even more important at scale as this will save an ISA ~10-20 minutes per lead as chatbots can already filter for timeline, budget and property preferences.
Neither option is clearly right for every team. This table is built to help you make the call based on your actual situation.
Human ISA
AI Chatbot
The fastest-growing teams are running both: AI on the website for instant inbound response, a human ISA on the phones for qualified pipeline work. That combination processes more leads than either option alone.
That gap between when leads come in and when teams respond is where leads get lost, and it happens every day, not just after hours.
The ISA role exists because lead follow-up is too important to leave to chance.
Whether that follow-up comes from a human ISA, an AI tool, or a combination of both depends on your volume and budget. But every team needs an answer to the 9pm lead.
If you want to make sure no inbound lead goes unanswered while you figure out the ISA question, Madison handles that function on your website around the clock.
Leads come in warm, contact details are captured, and your agents start their day with conversations already in motion rather than a cold list to dial.
Ready to start securing more leads today? Book a demo
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Within just a few months, Realty AI helped Team Logue capture 15 high-quality leads, resulting in 3 new transactions worth over $3.3 million. This success generated an estimated $82,500–$95,000 in gross commission income (GCI).