Narrow-Lot Home in Mentone, Bayside Melbourne
A narrow-lot home is designed for blocks under 10 metres wide. Melbourne has thousands of these blocks, especially in inner suburbs where old quarter-acre blocks have been split. The design constraints are unforgiving, but the right builder can deliver 4 bedrooms and a double garage on 7 metres of frontage.
What to know about Mentone
Coastal south-east suburb with rebuild and townhouse activity close to the bay and rail.
This suburb has an active knockdown-rebuild market. Established blocks, real character stock, and buyers already paying premium prices for good design.
Cost snapshot
Narrow-Lot Home build costs in Mentone
Base-build rate (mid-range)
$2,700 - $3,600/m²
RLB Q4 2025 — Melbourne, custom (excl. GST)
Typical floor area
150–240 m²
Habitable area, indicative
Indicative build cost
$405,000 – $865,000
Base build only; excludes land, site works, fees & GST
Build timeframe
10–16 months
Design to handover
Approval pathway
10–16 weeks
Lodged with City of Kingston
Victoria average (ABS)
$485,292 · $1,914/m²
ABS Building Activity 2024–25, completed detached house
Indicative planning figures only — a builder's fixed-price contract is always final. Sourced from RLB Rider Digest (Q4 2025), ABS Building Activity 2024–25, Cotality Cordell CCCI.
Local build notes for Mentone
Council
City of Kingston
Where people are building
Mentone Centre, near Mentone Beach, Balcombe Road precinct
Typical lots
Coastal 550–750 m² blocks with knockdown-rebuild and townhouse activity near the bay and rail.
Council rules and overlays for narrow-lot home in this area
In Victoria, a new build generally needs a planning permit (where the local planning scheme requires one) and a building permit issued by a registered building surveyor. Overlays such as Bushfire Management, Heritage, Significant Landscape and Development Contributions can apply, and growth-area blocks may attract the Growth Areas Infrastructure Contribution (GAIC). Confirm current requirements with your local council and the Victorian Building Authority before finalising a design.
The 3 decisions that shape your narrow-lot home in Mentone
Garage placement
A tandem garage keeps the frontage clean but uses depth. A side-by-side double eats frontage. On a narrow lot, this decision drives every other design choice.
Boundary walls
Building on the side boundary (nil setback) gives you the most usable width. It requires a boundary wall agreement with the neighbour and a fire-rated wall spec.
Natural light
A 7-metre wide house has a middle zone with no external walls. Voids, skylights, courtyards and clever floor plans matter here more than anywhere.
Narrow-Lot Home FAQs for Mentone
What is the minimum block width for a house?▾
It varies by council. Charles Sturt allows homes on blocks as narrow as 6 metres in some zones. Others require 7.5 metres or more. Check your specific zone.
Can I build a double garage on a 7-metre frontage?▾
A side-by-side double garage is 5.4 to 6 metres wide, leaving little for anything else. A tandem garage is usually the right answer on frontages under 8 metres.
Do I need a boundary wall agreement?▾
Only if you build directly on the shared side boundary. This is usually written between property owners and lodged with council.
Are narrow-lot homes harder to sell?▾
In inner-suburb Melbourne there is strong demand for well-designed narrow-lot homes. Elsewhere they can be harder to shift because the buyer pool is smaller.
Can I get a project-builder design for a narrow lot?▾
A handful of project builders offer narrow-lot ranges. Custom builders handle it better because every narrow lot has different constraints.
People also ask
Building a narrow-lot home in Mentone
Which council approves a narrow-lot home in Mentone?▾
Mentone sits in City of Kingston. That council administers the planning scheme and any overlays across the suburb, while your building permit and the mandatory inspections run through a registered building surveyor.
Where are new narrow-lot homes being built in Mentone?▾
Most of the building activity in Mentone is around Mentone Centre, near Mentone Beach and Balcombe Road precinct.
What lot sizes are typical for a narrow-lot home in Mentone?▾
Coastal 550–750 m² blocks with knockdown-rebuild and townhouse activity near the bay and rail.