Case study · Home cleaning
Home cleans, deep cleans and end of lease cleans across Sydney. Every quote, booking and invoice used to be typed into ServiceM8 by hand. Now Ernie talks to Lucy, his assistant on WhatsApp, and she does the typing.
Published
330+
voice notes sent to the assistant in the first 11 days
79
quotes priced in 6 days, from a voice note or a screenshot of the lead
50
booking changes made from WhatsApp in 4 days, across 24 jobs
59sec
typical time for the assistant to do the job and reply
Counted from the assistant's own records, 3 to 13 October 2026.
Before
A normal day now
8:10am
Ernie, after a sales call
10:40am
A new lead lands in his inbox
1:15pm
The customer says yes
4:30pm
A customer needs to move
Examples based on real messages. Names, prices and details changed.
What changed
79
quotes priced in the first 6 days, for more than 20 customers
Ernie talks through the job: how many rooms, what kind of clean, any extras. Or he sends a screenshot of the lead. Lucy prices it from Lumex's own price guide and sends the quote by email and text. He sent 42 photos and screenshots in the same 11 days.
17
jobs booked into ServiceM8 from a quote, each in about 5 seconds
When the customer says yes, Ernie tells Lucy who and when. She adds the customer if they are new, books the job in ServiceM8 with the right line items, puts the cleaners on it, attaches the cleaning checklist and sends a link to pay. She knows Lumex's 16 service areas, so she can suggest who is closest.
50
booking changes in 4 days, across 24 jobs
Cleans move. Customers add an oven or drop a room. Ernie says what changed and Lucy updates the job in ServiceM8: the time, the cleaner, the items and the price. Regular fortnightly customers are set up once and their next visit books itself. Customers get a reminder before the clean.
17
invoices sent with a link to pay in the first 5 days
Ernie says "invoice for that" and the invoice goes to the customer by email and text, with a link to pay. If it sits unpaid, Lucy sends the reminders. Quotes get the same care: a follow-up at a pace he picks for each customer, and it stops the moment he says so. She has run 17 chases so far, 11 of them for unpaid invoices.
Timesaver and productivity is next level.
ErnieOwner, Lumex Cleaning, Sydney NSW
Most important on any product is the customer experience and service after sales, which is excellent from Buildcrew.
Ernie, on supportThis is impressive with AI tech we use and saving time and resources by 10x.
Ernie, ownerWe will do great things together and future is today!
Ernie, ownerLucy is two weeks old, and some things took a few goes. At first she showed Ernie a preview and waited for a yes before sending anything. That slowed him down, so now his word is the approval and she sends straight away. The quote follow-ups were too keen at first, so each customer now gets a pace he picks. And about half the quotes still get flagged for him to check, because real jobs do not always fit a price guide.
There are still limits. Half her replies land inside a minute, but a bigger job can take five minutes or more. Leads still reach her as screenshots, because her link to his inbox is not set up yet. And the daily pay messages for cleaners are built but switched off until he is ready for them.
One call. We look at your job software, inbox and calendar, and show you what the assistant would take off your plate.
Next case study: a Perth security installer →