A granny flat is one of the most versatile investments a Redlands homeowner can make. Whether you are building for ageing parents who want independence without distance, adult children who need their own space, a rental income stream that offsets the mortgage, or simply to add a significant and functional asset to your property, a well-built secondary dwelling changes what your block can do for you.
Roulstone Renovations builds custom granny flats across Cleveland, Capalaba, Victoria Point, Thornlands, Wellington Point, Redland Bay, and throughout Redland City. As a full-service renovation and construction company with over 20 years of experience, we bring a level of quality and trade capability to granny flat builds that specialist-only companies often cannot match. Your secondary dwelling is built the same way we would build any part of your home: properly, with quality materials, by licensed tradespeople, at a fixed price.
We manage the entire process from design through to council approvals, site preparation, plumbing and electrical, construction, and handover. No juggling multiple contractors and no surprises on the bill.
The Redlands rental market is tight. Vacancy rates across Cleveland, Capalaba, and Victoria Point have remained low for an extended period, and demand for quality, self-contained accommodation on residential blocks continues to grow. Since September 2022, Queensland law allows granny flats to be rented to anyone, not just family members, which transformed the investment case for secondary dwellings across the entire state. A well-built, well-located Redlands granny flat can generate $450 to $600 per week in rental income depending on size, finish, and suburb.
At the same time, with aged care costs escalating and housing affordability making it harder for adult children to buy independently, more Redlands families are choosing to keep multiple generations on the same block. A granny flat makes that possible without sacrificing the independence and privacy that matters to everyone involved.
A well-built Redlands granny flat can generate $450 to $600 per week in rental income depending on size, finish, and suburb. With Queensland now allowing secondary dwellings to be rented to anyone since 2022, the income opportunity is real and accessible. At $500 per week, a granny flat generates $26,000 in gross rental income annually, a return that compounds with property value growth and represents one of the strongest yields available to residential property owners in South-East Queensland.
Ageing parents who want to stay connected to family but retain their own front door. Adult children who need a stepping stone between home and renting. The in-laws who make childcare possible but need their own space at the end of the day. A granny flat solves all of these situations elegantly, keeping the people who matter close while preserving the privacy and independence that makes multi-generational living genuinely sustainable long term.
A properly built, council-compliant secondary dwelling adds meaningful value to a Redlands property at sale time. Buyers recognise the income potential, the flexibility, and the lifestyle benefits of a second dwelling on the same block, and they pay for it. In a market where Redlands property values have grown strongly and buyers are competing for well-presented, functional homes, a granny flat can make your property a genuinely different proposition from everything else on the street.
Many Redlands properties have more backyard than the household is actually using. A granny flat puts that space to work. Rather than maintaining lawn that no one sits on, a well-designed secondary dwelling turns unused land into an income-generating or family-supporting asset. On larger Redlands blocks in suburbs like Capalaba, Thornlands, and Victoria Point, there is often more than enough space to accommodate a generous granny flat without compromising the liveability of the main home at all.
The cost of residential aged care in Australia continues to escalate, and many Redlands families are looking for alternatives that keep elderly parents comfortable, supported, and close to family without the upheaval and expense of a care facility. A thoughtfully designed granny flat with accessible features, step-free entry, and proximity to the main house can be a genuinely superior outcome for the whole family at a fraction of the long-term cost of formal aged care accommodation.
Roulstone builds granny flats as part of a full residential renovation and construction business, not as a volume kit home operation. That means every element of your secondary dwelling is built on site, by licensed tradespeople who are part of an experienced construction team. Your plumbing, electrical, waterproofing, and structural work are all handled to the same standard we apply to every renovation project we undertake. There are no prefabricated panels, no flat pack compromises, and no cutting corners to hit a price point.
Redland City Council has specific rules for secondary dwellings that came into effect in February 2024 as part of their Amenity and Aesthetics Policy and Guideline. Under the current Redland City Plan v13, compliant secondary dwellings can be processed as accepted development, meaning only building and plumbing approvals are required rather than a full development application through council, provided the design meets the relevant size and siting requirements.
The current size thresholds for granny flats in Redlands are: up to 85 square metres gross floor area on lots under 1,000 square metres; up to 112 square metres on lots of 1,000 square metres or more; and up to 160 square metres in Rural Zone properties on lots of 6,000 square metres or more. Secondary dwellings that exceed these caps may trigger a council referral and infrastructure charges. Setback requirements, bushfire and flood overlays, and site coverage limits also apply depending on your specific block.
We carry out a full property assessment before any design work begins, checking your zone, overlays, and relevant Redland City Plan provisions so your granny flat is designed to achieve accepted development status from the outset, not redesigned after a council objection.
There is no standard Roulstone granny flat. Every secondary dwelling we build starts with a thorough assessment of your specific block, your brief, and the way the new dwelling needs to relate to your existing home. Some clients need a detached backyard granny flat positioned to maximise privacy for both households. Others want an attached granny flat that connects to the main house for accessibility reasons. Some want a one bedroom design that is compact, functional, and low maintenance. Others need a two bedroom granny flat with a full kitchen, bathroom, laundry, and living area that genuinely functions as an independent home.
From the floor plan and facade through to the kitchen joinery, bathroom tiling, flooring, tapware, and external cladding, every element is chosen to suit your property and your brief. We do not use flat pack kits or prefabricated panels. Everything is built on site, to the same quality standard we apply to every renovation and construction project we undertake. The result is a granny flat that looks and feels like it belongs on your block, not something that arrived on the back of a truck.
Granny flat costs in the Redlands vary depending on the size of the dwelling, the complexity of the design, site conditions, and the level of finishes. As a guide based on current 2026 Brisbane and South-East Queensland pricing, a one bedroom granny flat built to a good mid-range standard typically costs between $180,000 and $250,000 for a complete, turnkey build. A two bedroom granny flat generally ranges from $220,000 to $320,000. Custom builds with premium finishes or on challenging sites can cost more.
It is important to approach any quote that appears significantly below these figures with caution. Quotes that look attractive at the outset often exclude site preparation, utility connections, council approvals, and certifications, which can add $20,000 to $40,000 to the total project cost once they are properly accounted for. We provide a comprehensive fixed-price quote that includes all of these costs before we start, so you know the full picture from day one.
Redland City Council has specific rules for secondary dwellings under the current Redland City Plan v13, which took effect from July 2025. Compliant secondary dwellings in residential zones can be processed as accepted development, requiring only building and plumbing approvals rather than a full development application, provided they meet the size and siting requirements.
The current size limits are 85 square metres gross floor area on lots under 1,000 square metres, 112 square metres on lots of 1,000 square metres or more, and 160 square metres in Rural Zone areas on lots of 6,000 square metres or more. Secondary dwellings that exceed these thresholds may require a council referral and can attract infrastructure charges. Setback requirements from property boundaries and the main dwelling, site coverage limits, and any flood, bushfire, or environmental overlays on your specific property also apply. We carry out a full property check at the outset of every project to confirm exactly what is achievable on your block under the current Redland City Plan before any design work begins.
Yes. Since September 2022, Queensland law allows secondary dwellings to be rented to anyone regardless of their relationship to the occupants of the main dwelling. This was a significant change that removed the previous family-only restriction and opened up the rental market for Redlands granny flat owners. Your secondary dwelling can be leased to tenants through a standard residential tenancy agreement under the Residential Tenancies Authority.
One important compliance note: if you are converting an existing granny flat from family accommodation to a rented dwelling, there may be additional fire safety and building code requirements that apply under Queensland building regulations. We recommend speaking with a licensed building certifier before making this change if your granny flat was not originally built with rental in mind. For new granny flats we build, all relevant compliance requirements are addressed as part of the build from the outset.
The total timeline for a granny flat in the Redlands has two phases. The pre-construction phase covering design, approvals, and trade scheduling typically takes 6 to 12 weeks. Granny flats that qualify as accepted development under the Redland City Plan move through this phase faster than those requiring a full development application through council.
Once construction commences on site, a standard one or two bedroom granny flat typically takes 12 to 16 weeks to complete. This can vary depending on site conditions, the complexity of the design, and trade scheduling in a market where licensed trades across South-East Queensland are in high demand heading into the 2032 Olympic build-up period. We give you a realistic timeline at the outset and keep you updated throughout the entire process.
Whether you're planning a full home renovation, a custom kitchen or bathroom, a home extension, or a new granny flat, reach out to the most trusted renovation builders in Redland City.
