Three-storey rendered mixed-use building with one ground-floor shop and six apartment balconies above

Insurance When More Than Half of Your Mixed-Use Building Is Residential

One of the most common reasons a mixed-use building is declined is arithmetic: the flats are bigger than the shop. Mainstream insurers stop at around half. We place buildings well past that line, and this page explains how the line is drawn.

Above Half

Residential

Up To ~75%

Considered

One Roof

One Policy

Recognition

Industry Awards

THE SHORT ANSWER

When the residential part of a mixed-use building is bigger than the commercial part, most mainstream property insurers decline it, and their decline letters say so in those words. Cover is still available: we have markets that will consider buildings past half and up to around three-quarters residential by floor space, case by case, and specialist markets assess higher shares individually. The building doesn't change between insurers; the measuring stick does.

Insurers measure the residential share two different ways: floor space and tenancy count. A building with one salon and three apartments can be just over half commercial by floor space and three-quarters residential by count. We ask for both before we approach anyone, so the building goes to the market whose rule it clears.

Mainstream cut-off
Around half residential
Past half
Markets to around 75%, case by case
Above that
Specialist markets, still placeable

HOW IT IS MEASURED

Two ways insurers measure the residential share, and where the lines sit

There's no industry standard. Each insurer writes its own rule, applies its own measure and doesn't publish either. That's why a building can be declined by three insurers and accepted by the fourth without anything about the building changing.

Glass shop door beside a separate residential entry with four letterboxes and a bicycle

01

By floor space

Square metres of residence against square metres of commercial. The most common measure, and the one most of the markets we use apply. A shop of 120 square metres under two flats totalling 160 square metres is 57 per cent residential.

02

By tenancy count

One commercial lease and three residential leases is three-quarters residential, whatever the areas. Some insurers apply this measure and decline on it even where the shop is the larger space.

03

Owner-occupied or tenanted

The share doesn't change if you live in the residence yourself, but the assessment does. An owner on site is a lower risk on vacancy, maintenance and security, and some markets weigh that.

04

Where the lines sit

Mainstream insurers tend to stop at around half. We have markets that go past that, up to around three-quarters by floor space, assessed case by case. Past that, specialist markets look at the building individually, and it is usually still placeable.

BEFORE WE QUOTE

What we need to work out which market fits

These eight answers let us calculate the residential share both ways an insurer might, and go straight to the markets whose rules the building clears.

Floor area of the commercial part and the residential part, in square metres
Number of commercial tenancies and number of residential tenancies
Whether the residence is owner-occupied or tenanted
Whether the business downstairs is run by you or by a tenant
What the business does, and whether it cooks
Year built, and when the building was last rewired and replumbed
Whether any part of the building is heritage-listed
Whether it is one building under one roof, or separate structures on one title

REAL PLACEMENTS

Mostly residential buildings we've placed

Anonymised placements from our mixed-use book, with the residential split each one carried.

Premiums and outcomes described are specific to each client and indicative only. Your own terms will depend on your circumstances and the insurer.

QUESTIONS

Mostly Residential Mixed-Use - Frequently Asked Questions

It depends on the insurer. Some measure floor space: the square metres of the residence against the square metres of the commercial part. Others count tenancies: one shop and three flats is three-quarters residential regardless of area. The same building can clear one measure and fail the other, which is why we ask for both before approaching a market.
Usually, yes. Mainstream property insurers tend to stop at around half, but we have markets that will consider buildings up to around three-quarters residential by floor space, case by case. Above that, the placement moves to specialist markets and the price rises, but it is usually still placeable.
The building starts to look like a block of units with a shop attached, and it is assessed that way. Specialist markets will usually still consider it, assessed individually. If there's no commercial part at all, you need landlord or block-of-units cover, not a mixed-use policy.
Because each insurer's appetite is written as a rule, and the rules are different. One stops at half residential by floor space, another at half by tenancy count, another accepts up to three-quarters, another declines any residential at all. None of them publish the rule for buyers. A decline letter that says 'residential percentage exceeds our guidelines' is describing that insurer's guideline, not the building.
It helps. An owner on site is a lower risk on vacancy, maintenance and security, and some markets treat owner-occupied mixed-use more favourably than tenanted. It doesn't change the residential share arithmetic. See living above your own business.
It rarely works. A home policy won't cover a building with a business in it, and a commercial policy won't cover the residence, so the boundary between the two (shared roof, stairs, walls and services) ends up covered by neither. One mixed-use policy for the whole building is almost always cleaner and usually cheaper. See what mixed-use insurance covers.
Three-storey mixed-use buildings at dusk with closed shops below and lit apartment windows above

Told the Residential Part Is Too Big?

Send us the floor areas, the tenancy count and the decline letter. We'll calculate the share both ways an insurer might and take the building to the market whose rule it clears.

Last updated: 03/09/2026

Call Us Now +61 2 9000 1155