How Much Does a Secondary Dwelling Cost on the Sunshine Coast?
One of the first questions we hear from homeowners considering a granny flat or secondary dwelling is simple: how much will it cost?
The answer depends on a range of factors including the size of the dwelling, site conditions, approvals, services and the level of finishes selected. While every project is different, understanding the typical investment required is a good place to start.
The Alexandria secondary dwelling design by Shepherd Construction Group.
Typical Granny Flat Costs
At Shepherd Construction Group, our current range of secondary dwelling designs starts from:
$183,482 ex GST
A compact one-bedroom design offering efficient, low-maintenance living. Ideal for rental income, guest accommodation or independent living.
$217,259 ex GST
A practical two-bedroom design that balances space, functionality and affordability. A popular option for rental income and flexible family living.
$243,214 ex GST
A spacious one-bedroom design with generous living areas and outdoor space. Well suited to homeowners seeking additional flexibility without compromising comfort.
$344,864 ex GST
A two-storey, two-bedroom, two-bathroom design offering maximum space and separation. Ideal for extended family accommodation or premium rental opportunities.
What Influences the Cost of a Granny Flat?
Every site is different. Factors that can influence the final investment include:
Site slope and earthworks requirements
Retaining walls and drainage
Service connections
Access to the building area
Approval requirements
Selected finishes and upgrades
A flat, easily accessible block will typically cost less to build on than a sloping site requiring significant preparation works.
Is a Granny Flat Worth the Investment?
For many Sunshine Coast homeowners, a secondary dwelling provides additional rental income, space for extended family, accommodation for adult children, or long-term flexibility as family circumstances change.
A well-designed granny flat can also add value to your property while making better use of available land.
The Importance of Site Assessment
Before selecting a design, it's important to understand what is possible on your block.
Sunshine Coast Council requirements, access, setbacks, services and site conditions can all influence the most suitable design and budget.
At Shepherd, we assess these factors early to provide clear advice and realistic cost expectations before moving into design and approvals.
Thinking About Building a Granny Flat?
Whether you're considering a compact one-bedroom design or a larger two-storey dwelling, the best place to start is with a conversation.
Our team can assess your site, discuss your goals and recommend a solution that suits your property, budget and future plans. Click the Contact Us button below to get started.
Prices are correct at time of publishing and are subject to change without notice.
