Why there is no single rate
Demolition is quoted per project because two buildings of the same built-up area can differ substantially in cost. A load bearing brick house and an RCC framed house of identical size involve different machinery, different durations and very different debris weights.
Anyone quoting a firm rate without seeing the building is estimating from averages. That number tends to change once the site is actually visited.
What increases the cost
Concrete quantity is usually the biggest driver: more RCC means slower breaking, heavier debris and more reinforcement to separate. Height adds cost too, since upper floors take longer to bring down safely.
Access is the factor owners tend to overlook. If a tipper cannot reach the plot, or a large machine cannot enter, material has to be moved in smaller stages, which adds labour and time.
Distance to a disposal facility affects the per-trip cost, and the number of trips scales with debris volume.
What can reduce the cost
Recoverable material offsets cost. Reinforcement steel, structural steel, roofing sheets, doors, windows, grills and fittings all have value, and how that value is treated should be agreed before work starts.
Clear access, a plot where debris can be temporarily staged, and flexibility on schedule all reduce the effort involved.
Getting a reliable number
Ask for a written scope alongside the price: demolition extent, whether the plinth and foundation are included, debris trips, clearing, and what is excluded. That is what makes two quotations comparable.
Sending photographs of the building and its approach road allows a preliminary discussion before a site visit is scheduled.
This guide is general information about demolition work in Bangalore. It is not legal or engineering advice for a specific property. Demolition is subject to applicable local rules, site conditions and required permissions.