7 min read · Case study · Last updated 14 May 2026
Most home builders are leaking money they don't know they've lost. We just measured it for one of them.
Buying a new build is not an overnight thing. If you sell house and land packages in NZ or Australia, your typical buyer spends 6 to 18 months researching before signing anything.
That's a long window. Leads go cold in that time if you're not engaging with them. Rep changes, finance delays, buyers who pause to save more deposit. Most prospects do not sign with the first brand they enquired with.
Sound familiar?
An award-winning home and land package builder operating across NZ and Australia came to us with exactly this problem. Around 70,000 prospects in their CRM. Five years of marketing enquiries, with no systematic follow-up after the first contact. About 56 sales reps spread across both countries.
The reps were cherry-picking the obvious hot leads. Everything else sat in the CRM going stale.
A premium brand. They were not sure an AI voice agent would fit. "We're a face-to-face culture," they said. "Will this dilute the brand?"
The framing that flipped them: your agent isn't selling. It's the dispatcher for the sale.
Every warm prospect knows a real local rep will call back. Human in the loop stays. The agent just makes sure your humans are spending their time on the right calls.
We called 5,200 of the 70,000 records as a controlled 14-day trial. The qualification bar was strict: the prospect had to verbally confirm intent to build in the next 6 to 18 months and request a callback. Without both, the agent did not tag the lead as warm.
Full transcript and audio routed automatically to your correct local rep for the prospect's region. Your reps got context. Your brand kept its face-to-face feel.
The surprise
1 in 15 cold calls produced a verified callback
5,200 dials across 36 hours of agent runtime. 2,286 live conversations. 158 verified warm callbacks once we filtered the noise out of the headline number.
That's 6.9% of every real conversation turning into a qualified lead. Roughly one in 15. From a database your sales managers had written off.
Your CRM probably has the same shape sitting in it right now.
What did your prospects actually say?
Real questions from real buyers your reps lost track of along the way (the sales cycle is long, life happens, leads slip). The same reps would have killed to take any of these calls if they'd known the buyer was still hot.
Cost per warm callback: AU$21.89. The Sydney boutique agent campaign ran at AU$32.74 per warm-transferred seller. The Melbourne dormant database reactivation produced a $2.9m listing in week one.
Different verticals, same shape. Voice agents are the cheapest sales rep your business will ever hire. And the only one who shows up at 6pm on a Tuesday without complaining.
The dark side
234 confirmed lost deals that no sales manager wanted to see
Here's the part most case studies skip. And the part your GM needs most.
We gave the agent a second function. If a prospect had already built with someone else, the agent asked who and why. Not aggressively. Just curiously.
234 prospects volunteered the answer (the agent asked politely, then moved on). Two of the large national volume builders came up the most. A regional independent kept appearing in one particular pocket.
Reasons clustered: faster timeline, package pricing, a local rep who actually returned a call. Honest feedback your buyers will never give you on a satisfaction survey.
The GM had never seen this data in one place before. The agent surfaced it in two weeks of normal calling, routed straight to the Waboom portal and visible to the executive team the next morning.
Now the maths your sales manager doesn't want to do. (I ran it twice. The number seemed wrong. It wasn't.) 234 confirmed lost deals at an average package price of AU$1.6M.
That's AU$374.4M in sales already lost to competitors, uncovered from just the first 5,200 calls. And 65,000 prospects still untouched in your database.
Not good. How leaky is your bucket?
This is what a bloody leaky bucket looks like. A premium brand built up 70,000 enquiries over five years. Then the team cherry-picked the easy wins and left the rest to bleed out to whoever called next.
That's the difference between a voice agent and a dispatcher who happens to take notes. One reactivates leads. The other tells you exactly where your business is leaking, and how much it has already cost you.
The pattern
The regional map told a different story in every territory
We grouped the 12 call regions into five broader trans-Tasman territories so individual rep performance stayed out of public view. The shape of the data was the part that mattered for your executive team.
| Territory | Live calls | Callback rate | Lost to competitor |
|---|---|---|---|
| Territory A | 158 | 22% | 11% |
| Territory B | 81 | 13% | 6% |
| Territory C | 47 | 9% | 19% |
| Territory D | 38 | 8% | 24% |
| Territory E | 53 | 18% | 12% |
Three patterns jumped out. Each one was a different conversation for your GM.
Territory A. Very high callback intent, moderate losses. Warm leads were stacking up unfollowed by your local reps. That's a sales process gap, not a marketing gap.
Territories C and D. Low callback intent, high lost-to-competitor. A specific competitor had a regional grip. That's your marketing investment and brand presence question.
Territory E. Balanced performance, strong on both ends. Your benchmark for what good looks like everywhere else.
None of these are answers. They're sharper questions than the executive team had walked in with. And that's exactly the point.
Got a dormant database and a regional sales structure? The next 14 days could tell you more about your brand than the last 14 months.
Live the same day for a focused build, two to three weeks max for a multi-region trans-Tasman rollout like this one.
AI voice agents for home builders · Book a 20-minute walk-through
The bigger story
We're a data layer that happens to dial phones
This was supposed to be a database reactivation campaign. It turned into something more useful for your leadership team.
A structured outcome on every call. Qualified or not, with the reason. Already built or not, with the competitor name when offered. Plus region and intent window for the warm leads.
Every result routed into your CRM and aggregated in the Waboom portal. Tables, charts, regional cuts, competitor capture. Visible to your GM the morning after the call.
That's data no marketing report gives you. It's the shape of your market, drawn from the mouths of the buyers themselves. Which regions are pulling their weight, who's eating your lunch in the ones that aren't, and which sales territories are operating below the rest.
Voice agents do the dialling. The platform underneath them turns the conversations into decisions your executives can act on the next morning. That's the move we're helping our clients make.
FAQ
Will an AI voice agent fit a premium brand?
Yes, when the prospect knows a real human rep will call back if they want one. The agent is the dispatcher. Your sales reps stay in front of the customer. Premium brands in NZ and Australia have been running voice agents in production for over a year without diluting their positioning.
What does it cost to reactivate a dormant CRM?
For this trial, AU$0.66 per dial and AU$21.89 per verified warm callback. A focused build can be live the same day. A multi-region rollout across NZ and Australia takes two to three weeks max.
How does the agent qualify a home build prospect?
Verbal confirmation of build intent in 6 to 18 months and an explicit callback request. Without both, the lead does not get tagged warm. The bar stays high so the local reps only see leads worth their time.
Can the agent capture competitor names?
Yes. We use a capture variable for competitor names, aggregated into reports when the campaign finishes. Tables and charts the client can review in the Waboom portal, with regional cuts and reason codes. Advanced analytics and reporting is an additional service Waboom offers on top of the call campaign.
How long before we see results?
Two weeks of trial calling is enough to see the funnel, the regional pattern, and the lost-deal data. Most builders we work with go from trial to a scaled multi-region campaign inside a month.
Got 50,000 prospects sitting cold in a CRM you've never properly worked?
We'll run a 14-day controlled trial against the first 1,000 records. Warm callbacks land in your reps' inboxes. Lost-deal data your CRM has never captured aggregates in the Waboom portal. The regional pattern you didn't know was there shows up the next morning.
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Leonardo Garcia-Curtis
Founder & CEO at Waboom AI. Building voice AI agents that convert.
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