The Next-Gen Brand Lab
Budgeting
How much should a developer spend on marketing a launch?
Last updated 2026-08-13 · 7 min read
The common approach is to take a percentage of projected revenue and call it the marketing budget. It produces a number quickly and it is almost always the wrong one, because it is disconnected from how many leads you actually need.
Work backwards from units
Start from how many units you need to sell, multiply by leads per closure, multiply by cost per lead. That is your media budget. Agency fees are a separate line.
| Step | Working | Ten units |
|---|---|---|
| Units to sell | given | 10 |
| Leads per closure | 100, conservative | 1,000 leads |
| Cost per lead | ₹350 baseline | — |
| Media | 1,000 × ₹350 | ₹3.5 lakh |
| GST on media | 18% | ₹63,000 |
| Total media | ₹4.13 lakh |
Against ₹35 lakh units that is ₹3.5 crore of revenue for roughly ₹4 lakh of advertising. The point of doing it this way is not the precision — the inputs are estimates and will move — it is that every number in the chain is one you can argue about with evidence. A percentage-of-revenue figure gives you nothing to argue with.
What the fee side actually costs
Three structures dominate this market, and they carry the risk differently.
- Monthly retainer. Specialist real-estate retainers run roughly ₹1–3 lakh a month. Predictable, and the agency carries no volume risk.
- Percentage of media. Commonly 10–20% of spend. Simple, and it creates an obvious incentive problem: the agency earns more the more you spend, whether or not spending more is right.
- Per qualified lead. You pay per lead meeting a written definition. The agency carries the volume risk, which is the point, and it only works if the definition is real.
Bundled all-in quotes in this market commonly reach ₹7–10 lakh a month once media is folded into the fee. That is not necessarily bad value, but it is opaque by construction: with media inside the fee you cannot see what was actually spent on advertising, and the agency's margin moves inversely with your media budget.
Why unbundling matters
Keep media billed directly to you by Meta and Google. Three reasons, none of them about trust:
- The invoice is independent evidence. You can reconcile what was spent against what was reported without asking anyone.
- The incentive stays clean. If your agency does not profit from your media, "spend more" stops being the default recommendation.
- You keep the account. Campaign history, audience data and learning are assets. If the account is the agency's, they leave with it.
Questions developers ask
What percentage of revenue should real estate marketing be?
Percentage-of-revenue rules are the wrong tool here. Size the budget from the unit target backwards: units × leads per closure × cost per lead. Ten units at 100 leads per closure and ₹350 a lead is roughly ₹3.5 lakh of media plus GST — and every input in that chain is one you can challenge with evidence, which a percentage is not.
What do real estate marketing agencies charge in Bangalore?
Specialist real-estate retainers run roughly ₹1–3 lakh a month. Percentage-of-media arrangements are commonly 10–20% of spend. Bundled all-in quotes, where media is folded into the fee, commonly reach ₹7–10 lakh a month. Of 41 agencies advertising to developers in this market in August 2026, none published a price.
Should media spend be billed through the agency?
No. Keep it billed directly to you by Meta and Google. The platform invoice is independent evidence of what was actually spent, the agency does not profit from recommending more spend, and you retain the ad account with its campaign history and audience data when the engagement ends.
Is a percentage-of-media fee a problem?
It creates an incentive worth naming: the agency earns more when you spend more, regardless of whether spending more is the right call. It is workable when the percentage is modest and the reporting is genuinely transparent, but it should never be the only accountability in the arrangement.
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