Buyers of pre-construction apartments tend to call the developer weekly for progress updates. Every site milestone the manager logs with photos becomes a branded WhatsApp update mapped to each buyer's unit and payment stage, and an FAQ bot handles the follow-ups.
Typical results
94%
Update read rate
70%
Questions resolved by bot
2/mo
Updates per buyer
Figures reflect typical results for this kind of automation.
The challenge
Buying an apartment off-plan means two years of silence punctuated by invoices. Anxious buyers filled that silence with phone calls — ninety a month to a three-person sales office — asking whether the crane they saw meant their floor was next. Every call interrupted a sale in progress, and buyers still felt uninformed.
Before and after
Status calls
−78%Questions needing a human
−70%Staff hours on buyer updates
−90%The automation
The site manager logs each milestone through a simple photo form — foundations poured, floor completed, windows in. The system maps that milestone to every affected unit and composes a branded WhatsApp update per buyer: photos of their building, what just happened, and what it means for their payment schedule. A WhatsApp FAQ bot answers the routine follow-ups — timelines, payment stages, finishing choices — from project data, routing anything unusual to a human.
How it works
- 01
Milestone logged
The site manager snaps photos and taps the completed stage in a simple mobile form.
- 02
Mapped per buyer
The milestone is matched to every affected unit, floor, and payment stage.
- 03
Personal update
Each buyer receives a branded WhatsApp with photos and what the progress means for them.
- 04
Payment context
If the milestone triggers a payment stage, the update explains it before the invoice arrives.
- 05
FAQ bot on duty
Follow-up questions get instant answers from project data; edge cases route to a human.
Starts from
- Site photos & milestones
- Buyer & unit registry
Delivers
- Branded WhatsApp updates
- Photos of their building
- FAQ bot answers
The impact
Status calls typically drop about seventy-eight percent, from ninety a month to twenty. Updates see read rates around ninety-four percent, the bot resolves seven in ten questions without staff, and buyers forward construction photos to family, turning anxiety into word-of-mouth for the developer.
Questions about this automation
How does a site milestone turn into a buyer update?
The site manager logs the completed stage in a mobile form and adds photos. The system matches that milestone to every affected unit, floor and payment stage, then sends each buyer a branded WhatsApp message with photos of their building, what was finished, and what it means for their payment schedule.
What can the FAQ bot answer, and what goes to staff?
The bot answers routine questions from project data, such as expected timelines, upcoming payment stages and finishing choices. Anything outside that data, a complaint, or a request to change the contract is handed to a person in the sales office with the full conversation attached, and the bot stays out of that thread.
What is needed to start sending updates?
A registry of buyers linked to their units and payment schedules, a list of construction milestones, and an official WhatsApp API number with approved message templates. The site manager needs only a phone. This is a multi-step build, usually rolled out in stages, with milestone updates first and the FAQ bot after.