A real estate ISA (inside sales agent) works a team's new leads by phone and text. They call each lead back fast, ask qualifying questions, follow up with the ones who don't answer, and hand the ready ones to an agent. That handoff is the point: an ISA's work only counts once a lead is talking to an agent.
Teams hire ISAs so their agents' hours go to showings, listing appointments and offers instead of first calls. This guide covers what the job looks like day to day, what it pays, when a team is ready for one, and what changes when the ISA is an AI. If you're already comparing AI ISAs, jump to the five questions that test the handoff.
What a real estate ISA does
Writing for NAR in 2017, ISA trainer Dale Archdekin put it simply: ISAs are "virtually the same as an outside sales agent, with the exception that they don't go on listing or buyer appointments, and they don't walk the client through the sales process." Everything an ISA does happens before that first appointment.
A typical day has four parts.
New leads first. Leads from Zillow, Realtor.com, the team's website and Facebook ads land in the CRM. The ISA's top job is to reach each one while they're still thinking about the house they asked about.
Qualifying. Many ISAs qualify buyer leads with a framework called LPMAMA: Location, Price, Motivation, Agent (are they already working with one?), Mortgage (are they pre-approved?) and Appointment. The answers decide whether the lead goes to an agent today, goes into follow-up, or gets dropped.
Follow-up. Plenty of new leads don't answer the first call. The ISA works the list of leads who didn't pick up or weren't ready, by call and text. On teams that prospect, the ISA also calls expired listings, for-sale-by-owner sellers (FSBOs) and the team's past clients.
The handoff. When a lead is ready, the ISA passes them to an agent. Some teams keep the lead on the line and bring the agent in live. Others put an appointment on the agent's calendar and send notes. Either way, this is where good ISAs and weak ones split. A live transfer that rings an agent who doesn't pick up, or an appointment whose notes never reach the CRM, undoes everything that came before it.
ISA, OSA and virtual assistant: who does what
Three titles get mixed up on real estate teams. Here's how they differ.
| Role | What they do | Who they talk to |
|---|---|---|
| ISA (inside sales agent) | Calls and texts new and old leads, qualifies them, hands ready ones to an agent | Leads, by phone and text |
| OSA (outside sales agent) | The producing agent: shows homes, takes listing appointments, writes and negotiates offers | Buyers and sellers, in person |
| Virtual assistant | Admin work: calendars, CRM cleanup, listing paperwork, email | Mostly the team |
One more term causes confusion. A "virtual ISA" usually means a remote person, often overseas, hired through a staffing company. It doesn't mean an AI. Software that does the job is called an AI ISA.
What a real estate ISA costs
ZipRecruiter puts the average pay for a real estate inside sales agent in the US at $69,398 a year, with most between $50,000 and $86,500 (as of October 14, 2026). That's about $5,783 a month in pay alone, before payroll taxes, tools and the team lead's time.
Pay is usually a base plus a bonus. The bonus is either a set amount per appointment that actually happens or a share of each deal the ISA's leads close. Pay on appointments that happen, not just appointments set, or you'll get a calendar full of no-shows.
A remote ISA through a staffing company costs less per month. MyOutDesk's managed staff, for example, starts at $1,988 a month for one full-time person, 8 hours a day, 5 days a week. The provider handles hiring, payroll and monitoring, but the scripts and the results are still yours.
The cost that never shows up on the offer letter is management. An ISA needs coaching, call reviews and a clear daily target, and that time comes out of the team lead's week. For the full breakdown of in-house, remote and AI costs, see our real estate ISA cost breakdown.
When a team is ready for an ISA
An ISA hire works when three things are already true:
- There are enough new leads to fill a day. If the ISA spends half their shift waiting for the next lead, the job feels pointless and they'll leave.
- Your CRM and lead routing work. Leads land in one place, sources are tagged, and follow-up steps are written down. An ISA can't fix messy systems while also working the phones.
- Someone will coach them. Daily check-ins, call reviews and a script that changes when it isn't working. If nobody has that time, a remote ISA service (where the provider manages them) or an AI ISA fits better.
What an AI ISA is
An AI ISA is software that does the first part of an ISA's job. It calls or texts a new lead within seconds, asks your qualifying questions, and hands the lead to a person on your team. It doesn't show homes, negotiate or close. Like a human ISA, a good one is judged by the handoff.
The handoff is where AI ISAs differ most. Some try to do everything alone and only pass the lead on at the end. Others are built to get a qualified lead talking to an agent as fast as possible. Callingly's AI Agent is the second kind, and we built it that way on purpose: it qualifies the lead and warm-transfers them to your agent while they're still on the line. The AI warms them up, and your agent is there to close.
Most AI ISA roundups rank tools on response speed, qualifying depth and price. Those matter, but they don't tell you what your agents get at the end. The questions below do.
Five questions that test an AI ISA's handoff
Ask every vendor these. Better yet, test them yourself on a trial: submit a lead from your own phone and listen to what happens.
1. Does it call, or only text?
Some tools sold as AI ISAs only text. Texting helps, but only a call can put the lead on the line with your agent the same minute.
How Callingly does it: the AI Agent calls each new lead within seconds during your team's call hours, and can text in the same follow-up sequence.
2. What does the lead hear when they're ready?
A good handoff keeps the lead on the line, tells them who's joining, and gives the agent context before they speak. A weak one ends the call with "someone will be in touch" and leaves the lead waiting with no time set.
How Callingly does it: the lead owner rings first if they're on the team, available, and your routing settings call for it. If not, the available agents in your first priority group ring at the same time, up to a set limit. When an agent accepts, the AI tells the lead who's joining and connects them. With call screening on, an agent who answers on their phone hears a short spoken briefing first: the lead's name, where they came from, and the most useful thing the lead said.
3. What happens when no agent is free?
Leads come in during showings, closings and dinner. Ask what the AI does when nobody accepts the transfer. A ready lead who hangs up with nothing set is a lead the next team gets to first.
How Callingly does it: the AI offers the lead a callback at a time they pick. The lead can say no. It doesn't book appointments onto your agents' calendars.
4. When will it call?
Ask what hours the AI calls in and what it does with a lead that comes in at 10 PM.
How Callingly does it: calls and texts to US and Canadian leads only go out between 8:00 AM and 9:00 PM in the lead's time zone. Callingly reads that zone from the phone number, unless you set every lead to your account's time zone. Inside that window, the AI calls during your team's call hours, and whether it also calls after them depends on your settings. A lead who comes in at 10 PM their time isn't called that night. With the sequence's "Wait until next business hours" step on (the default for a new sequence), the call moves to the next time your team's hours and the lead's window overlap.
5. What lands in your CRM?
The morning after, your agents need to see what happened without asking anyone.
How Callingly does it: your CRM gets the agent's call, the transferred part of the conversation, with its recording link. The AI's own part of the call doesn't sync to your CRM. Follow Up Boss also gets the AI calls that didn't connect.
What an AI ISA costs, and what it buys
Callingly's AI ISA is priced per use, so the bill depends on how many leads you get and how many calls each one takes. Here's a worked example on Callingly's Growth plan, which is $250 a month and comes with $250 of usage credit.
Say your team gets 300 new leads a month. Assume each lead gets two AI calls that connect or reach voicemail, plus one text.
- 600 AI calls at $0.45 each: $270
- 300 single-segment texts at $0.10 each: $30
- Usage: $300, which is $50 over the $250 credit
- One phone number: $5
That's $305 for the month ($250 plan, $50 extra, $5 number), about $1 per lead. A call that rings out or gets a busy signal isn't billed. AI calls are never billed by the minute, and for teams that signed up directly since September 26, 2026, the talk time after the transfer is included too. Your numbers will differ with your lead count and how many calls each lead takes, so plug in your own.
That $1 buys the first touch: a call within seconds, the qualifying questions, and a transfer to an agent. It doesn't buy a person who knows your market, works your old database, or builds trust with a buyer over months. That's what the $69,398 average ISA pay is for. So skip the "which is cheaper" question. Ask who should make the first call on every lead, and who should spend their day on the leads who are ready to talk.
For many teams the answer is both. The AI makes the first call on new leads, and your ISA and agents spend their hours on live, qualified conversations. We go deeper on when each one fits in AI vs. human ISA in real estate.
Frequently asked questions
What does ISA stand for in real estate?
Inside sales agent. It's the person on a team who works leads by phone and text and hands ready ones to an agent. The agent who meets clients is sometimes called the OSA, or outside sales agent.
How much do real estate ISAs make?
ZipRecruiter puts the US average at $69,398 a year, with most between $50,000 and $86,500 (October 2026). Pay is usually a base plus a bonus per appointment that happens or per closed deal.
What's the difference between an ISA and a virtual assistant?
An ISA is a salesperson whose job is turning leads into conversations with agents. A virtual assistant handles admin work like calendars, CRM cleanup and paperwork.
Can AI replace a real estate ISA?
No. An AI ISA covers the first touch: the fast call, the qualifying questions and the handoff. People still build the relationships, work the old database and close.
Does an AI ISA book appointments?
Some book onto a calendar. Callingly's AI Agent connects the lead to an agent live, and when no agent is free it offers a callback at a time the lead picks.
Sources
- Dale Archdekin, "The Rise of the Inside Sales Agent," NAR REALTOR News, January 3, 2017: nar.realtor
- ZipRecruiter, Real Estate Inside Sales Agent salary, as of October 14, 2026: ziprecruiter.com
- MyOutDesk pricing, read October 14, 2026: myoutdesk.com/pricing
- LPMAMA framework, Sierra Interactive help center: help.sierrainteractive.com
- Callingly plans and rates: callingly.com/pricing