If your property is in a heritage overlay, the words "heritage protected" don't necessarily mean nothing can be demolished. Most overlays specifically allow some demolition — usually rear additions, outbuildings, or non-original alterations. What's protected is the heritage fabric itself, which usually means the street-facing facade and any features that contribute to the heritage character. Here is what's actually allowed in Melbourne, what's restricted, and how facade retention works in practice.
What a heritage overlay actually does
A Heritage Overlay (HO) under the Victoria Planning Provisions adds a planning permit requirement to specific actions on a property. Within an overlay, you typically need a planning permit to:
- Demolish or remove a building, in part or whole
- Alter the external appearance of a building
- Carry out external works (paving, fencing, etc.)
- Remove or alter trees in some overlays
The overlay does not automatically prohibit demolition. It requires that demolition be assessed by council, and approved or refused based on heritage merit.
What is usually allowed
In most heritage overlays, council is willing to consider:
- Demolition of rear extensions — particularly post-1960 additions that were never part of the original heritage building
- Demolition of outbuildings — sheds, garages, granny flats not contributing to heritage value
- Internal alterations — usually outside the overlay control (overlays cover external character)
- Removal of non-original features — aluminium windows replacing original timber, modern fences, vinyl cladding
Each council has a different appetite for partial demolition. Some are cooperative if the proposal preserves the streetscape. Others are strict even on works that don't affect heritage fabric. Knowing your council's track record matters.
What is usually restricted or refused
- Full demolition of an "Individually Significant" building
- Demolition of street-facing facades or roofs visible from the street
- Removal of original windows, doors, verandahs, decorative features
- Significant alterations that change the heritage character
- Demolition of contributory buildings within a precinct overlay
The distinction between "Individually Significant" and "Contributory" matters. Individually Significant buildings are protected on their own merit. Contributory buildings get protection because they sit within a heritage precinct. The latter can sometimes be demolished if the streetscape is preserved, but each case is judged on its own.
Facade retention — the most common compromise
For homeowners who want to rebuild but the overlay prevents full demolition, facade retention is often the path forward. The original street-facing facade is retained intact while the rear is demolished and replaced with new construction. The character of the street remains; the homeowner gets a new home behind the front wall.
How it works practically:
- An engineer designs a temporary structural support frame that holds the facade upright while everything behind it is removed
- The demolition contractor installs the frame before any structural removal begins
- Demolition proceeds back-to-front, with the facade supported continuously
- The new building is built behind the retained facade, structurally tied in
- Internal finishing of the facade is allowed (insulation, lining, services)
Facade retention adds 4–8 weeks to the demolition programme and usually $25,000–$60,000 to the cost — but it's often the only way to rebuild on a heritage overlay block. We've done this in Hawthorn, Albert Park, and South Melbourne.
If you're looking at a property in a heritage overlay and planning a knockdown rebuild, get a planner involved before you buy. The planning permit is the long pole — even a "yes" can take 3–6 months. A "no" can scuttle the project entirely.
Who decides — and how to read the tea leaves
The local council's planning department assesses applications, with input from a heritage advisor. Some considerations:
Statement of Significance
Every property in a heritage overlay has a Statement of Significance — a council document explaining why the building is heritage. Read it. If your proposed demolition doesn't affect the elements listed as significant, you have a strong argument.
Recent decisions on similar properties
Council planning decisions are public. Look at recent decisions on neighbouring properties or similar overlay properties. Patterns emerge: some councils are pragmatic, others are not.
Pre-application meeting
Most councils offer pre-application meetings — a free conversation with a planner before you formally apply. This is the single most useful step. The planner will tell you which parts of your proposal will be supported and which will be refused, often saving months of formal application.
The planning permit process for heritage demolition
- Pre-application meeting with council planner — usually free, 1 week to schedule
- Engage a heritage consultant — preparing a heritage impact statement, $2,500–$8,000
- Lodge application with council — $200–$2,500 fee depending on works value
- Council assessment — 4–10 weeks typically, longer if complex
- Public notification — neighbours can object; council weighs objections
- Council decision — approval, refusal, or approval with conditions
- VCAT appeal if refused — adds another 4–8 months
For most homeowners, the heritage consultant is money well spent. They know what council will accept and how to write the application accordingly.
Planning permit then building permit
Heritage overlay demolitions need both a planning permit (heritage approval) and a building permit (engineering and safety). Apply for the planning permit first; only when it's issued does the building permit application proceed. Building permit detail here.
What happens if you demolish without permission
Unauthorised demolition of a heritage building is a serious offence in Victoria. Fines for individuals can exceed $400,000; for corporations, considerably higher. Council can require reconstruction "to the original specification" — a near-impossible standard that often becomes a multi-million-dollar liability. No reputable contractor will demolish a heritage-protected building without the planning permit in hand.
The honest advice
Heritage overlay demolition is slower, more complex, and more expensive than non-overlay demolition. It is also entirely possible if approached properly. Engage a heritage consultant early, plan for facade retention if full demolition is unlikely, and budget for the timeline. The end result — a new home behind a preserved facade in a heritage street — is often well worth the work.
