AI Voice Agent vs. ISA for NYC Real Estate Teams

An inside sales agent (ISA) is the person on a real estate team whose job is to reach new leads quickly, qualify them and set appointments for the agents who close. Teams that get busy enough usually consider hiring one. Now there is a second option: an AI voice agent that answers calls and follows up with leads.

An earlier version of this post claimed the AI option cost a fraction of an ISA and quoted ranges we could not support. This version gives you the formula instead, because the right answer depends on your lead volume and your commission per deal.

What an ISA costs

Start with the wage you would actually offer, then add the employer's side. The U.S. Bureau of Labor Statistics reports that in June 2026, benefits made up 30.0% of employer compensation costs for private industry workers (opens in a new tab), with wages and salaries the other 70.0%. Dividing a wage by 0.70 gives the average all-in cost, so a $50,000 wage comes to about $71,400. That is a national average across private industry; a small team, or an ISA paid as an independent contractor or mostly on commission, can differ a lot.

For a sense of the wage, BLS does not publish an ISA category. In its May 2023 figures for the New York-Newark-Jersey City area, mean annual wages were $51,200 for customer service representatives, $42,150 for receptionists and information clerks, and $40,160 for telemarketers (opens in a new tab). Those are neighbouring roles, three years old, not ISA salaries, and a licensed ISA with real estate experience may cost more. Use your own offer.

Three costs belong in the comparison but have no number here: the time to recruit and train someone, the manager's time spent on coaching, and the cost of replacing the person when they leave. We removed the turnover and ramp-up figures this post used to quote because we could not source them. Use your own history.

What an AI voice agent costs

We have not found an independent, published price range for this category, and quotes vary with how much is built for you. So ask every vendor for the same five numbers, and add them up for the first year:

•A one-time setup or build fee
•A monthly platform or service fee
•Usage charges, usually per minute or per call, plus phone numbers and texting
•Changes after launch: who rewrites the scripts when your listings or policies change, and what it costs
•Your own staff time to review calls and handle the hand-offs

OMII AI quotes by project, in writing, through our contact page. We would rather you compare three written quotes than rely on a range from a blog post, ours included.

The break-even arithmetic

Whatever either option costs, it only earns back its cost if it produces deals you would not otherwise have closed. Divide the annual cost by your net commission per deal (after splits) to see how many extra closed deals that takes.

Extra closed deals needed per year to cover different annual costs, at a net commission of $9,000 per deal
Annual cost (illustrative)	Extra closed deals needed
$12,000	1.3
$36,000	4
$71,400 (the $50,000 ISA above, fully loaded)	7.9

The first two rows are placeholders to show the math, not quotes from OMII AI or anyone else. The $9,000 net commission is an assumption. The word "extra" matters: an ISA who talks to 500 leads has not earned their cost unless some of those deals would have been lost without them. The commission leakage calculator lets you test how much a faster first reply could add on your own numbers, and the missed call revenue calculator does the same for calls that go unanswered.

Coverage is the real difference

A week has 168 hours. One full-time person working 40 of them covers about 24% of the week, before vacation and sick days. Leads that arrive at 9 p.m., on Sunday or while your ISA is on another call land in the other 76%. An AI voice agent can be set up to answer at any hour and to take several calls at once, which is its main practical advantage. A human answering service or an instant text-back can also cover those hours, so compare all three, not just the two in the headline.

Speed matters for a reason we cover in what the response-time research measured: in a Harvard Business Review study, contacting a lead within an hour made it nearly seven times as likely to be qualified as contacting it an hour later (HBR, 2011 (opens in a new tab)). That study was cross-industry and measured qualification, not closed deals, so it supports "faster is better" without telling you how much better. The speed-to-lead calculator lets you put your own response times in.

Side by side

Qualitative comparison of a human ISA and an AI voice agent
Factor	Human ISA	AI voice agent
Hours	Set shifts, plus time off	Can run at any hour once configured
Simultaneous conversations	One at a time	Several at once, within the vendor's limits
Judgment and rapport	Strong; can read a worried buyer	Limited; needs a clear hand-off to a person
Consistency	Varies by person and by day	Follows the script every time, including its mistakes
Typical failures	Sick days, turnover, drifting from the script	Mishearing callers, odd answers, outages, vendor changes
Setup	Recruit, train, coach	Build, test with real calls, monitor
Ongoing work	Management and coaching	Reviewing calls and updating scripts
Compliance	Training and supervision	Consent, disclosure and recording design, especially for outbound

Where a person is still the right call

•Co-op and condo board questions. The answers are specific to the building and change with the board. A person who knows the building should handle them.
•Negotiation and anything emotional. A stressed seller or a buyer who has just lost a bid needs a person.
•Referral relationships. In NAR's 2025 buyer survey (opens in a new tab), 43% found their agent through a friend, neighbor or relative. That is a relationship business, and no first-touch tool replaces it.

Many teams will end up with a mix: automation for first contact and after-hours coverage, people for the conversations that need judgment, and an ISA, if you want one, working your database and past clients instead of racing portal leads.

What the evidence does and does not show

We have not found an independent study that compares AI voice agents with human ISAs on closed deals in any market, NYC included. Results quoted by vendors, including any we might quote, are marketing until you can verify them. So test: run a 30-day pilot with a written success measure (for example, share of leads reached within five minutes, appointments set per 100 leads, and show rate), listen to a sample of calls every week, and keep a human fallback.

Questions to ask any vendor, including us

1.What is the total first-year cost, split into setup, monthly fee, usage and phone numbers?
2.What happens when the agent cannot answer or the caller asks for a person? Who is called, and when?
3.Can I hear every call and read the transcripts?
4.Which connections to our CRM and calendar are live today and which are planned?
5.How do you handle consent, recording and disclosure for the states our callers are in?
6.Who updates scripts when our listings, fees or policies change, and how fast?
7.What do we own if we leave: phone numbers, recordings, data, scripts?
8.Can you show results from a team like ours that I can verify myself?

On outbound calls specifically, the FCC ruled in February 2024 that calls made with AI-generated voices are "artificial" under the Telephone Consumer Protection Act (opens in a new tab), which brings them under the consent rules for robocalls. Have a lawyer review any outbound calling before it goes live.

Hear the voice agent before you decide anything.

Call (347) 757-4410 to talk to Emma, OMII AI's voice agent. It is a demo line, so please do not share anything sensitive. If it is worth a conversation, ask us for a written quote.

Call (347) 757-4410 Ask for a written quote

The bottom line

An AI voice agent is not automatically cheaper than an ISA, and an ISA is not automatically better. The question is which first-touch setup produces the most extra closed deals for its cost, at the hours your leads actually arrive. Work it out with your numbers, pilot before you commit, and keep people on the conversations that need them. Our real estate page explains what we build for teams that decide automation is worth it.

About this update

On October 3, 2026 we rewrote this post. We removed the AI cost range (which did not match OMII AI's own pricing), the ISA turnover and ramp-up figures, the "$50,000 to $70,000 saved a year" claim, and the "100% consistent" and "no turnover risk" claims for AI, none of which we could support. Each figure left was read on the page linked next to it; the Harvard Business Review figure was confirmed from a printed copy of the article. OMII AI sells voice agents, so we have a stake in the answer.