- GRANNY FLATS
- 3 BEDROOM
3 Bedroom Granny Flats
3-bedroom granny flats give you all the advantages of additional accommodation in your backyard, without having to move or fork out high costs. These secondary dwellings are perfect for elderly parents, extra rental income, or adult children moving back home.
Amescorp has over 25 years of experience with building granny flats across Sydney, the Central Coast, Newcastle and the Hunter Valley. Our 3-bedroom granny flat designs and floor plans are some of our most popular builds.
A 3-bedroom granny flat is essentially a good-sized second home with enough room for a family of 4 or 5, or a long-term rental tenant.
- Fixed-price proposal after a free site inspection - no surprise site costs.
Years building granny flats
In-house design & construction
Display showrooms to walk through
Once approvals are in place, we lock in your fixed price building contract
Why Choose a 3 Bedroom Granny Flat?
Grandparents may want to move closer to grandkids, adult kids may need help saving for their own place, and some families want a separate home office, studio, or gym space.
A larger granny flat also delivers higher rental returns, as it appeals to a wider range of people.
Our 3 Bedroom Granny Flat Designs
Amescorp offers three different floor plans/designs for 3-bedroom granny flats. Each design is built with a fixed-price, no-hidden-costs approach that we use on every project. Each design can be modified to suit your block of land and your family’s needs.
- 3 Bed
- 1 Bath
- Up to 60 m²
A tight, efficient layout suited to narrower blocks - living and kitchen open onto a covered front porch.
- 3 Bed
- 1 Bath
- Up to 60 m²
A slightly larger footprint with a wider living zone - the better fit for blocks that can take a full 60 m².
A covered, tiled front porch, plus your choice of brick, vinyl cladding, Weathertex or rendered polystyrene walls, Colorbond or Boral roof tiles.
Timber skirting, plasterboard walls, a quality paint finish throughout the granny flat and vinyl or timber laminate flooring.
Floor-to-ceiling tiling, a 600 mm vanity, 6-star tap and shower fittings, and a framed or semi-framed shower.
A stainless steel sink, polyurethane cupboards, an electric or gas cooktop and an externally ducted rangehood.
A built-in wardrobe with sliding mirrored doors and shelving.
A 3.5kW reverse-cycle air conditioner, Electricity Meter, LED downlights, and a hard-wired smoke detector.
View our 3-bedroom granny flat floor plans here and compare them to our 1-bedroom and 2-bedroom floor plans.
Our Process
Online Assessment & Review
Check the address of the property against specialist mapping sites and obtain sewer diagrams and Sydney Water Tap In diagram if required.
Review any documents you may have for the property such as 10.7 Planning Certificate, Flood information or Title Search deeds.
Discuss any thoughts you may have about what you are looking for in your Granny Flat or Studio, where you may want it located and any other pertinent information.
We will then arrange a Site Visit for one of our Consultants to meet with you at your property.
Site Visit & Property Specific Proposal
Our Consultant will meet with you and review all of the factors that will impact on the build of the Granny Flat such as sewer location, slope of the land or items that may need to be demolished or removed.
They will discuss with you what your preferences are for build materials, and then put together a very detailed, fixed price proposal that provides all of the information about our high level of quality inclusions and the best possible estimate of any specific site costs.
You will be invited to come into our Showroom where we have 2 Granny Flats built so that you can see firsthand what is included in your build, and review all of the details, amending anything required.
Design Stage
When you are happy with what we have proposed and wish to proceed you will sign the acceptance page and move into the Design Stage.
Once we have the survey and all of the relevant documents you will work with your consultant and our architect to create the design that best suits your requirements. You can amend this where required, as it is essential that you are happy with the design before we move into Approval Stage
Approval Stage
When your Design is finalised, you sign the Construction Contract and we will obtain all of the full architectural plans, the structural engineering and hydraulic engineers reports, Basix report and the Certifiers approval & council certificate, resulting in a set of Approved Plans.
Whilst this is all happening in the background, you can come in and make all of your material and colour selections from our large range of optional materials and colours.
If your approval was via a DA through local council, this is expected to be a longer process than obtaining approval via CDC, but we will keep you up to date with progress reports.
Construction
Once the Granny Flat or Studio is approved, we will obtain the Home Warranty insurance for your project and you move into the Construction team.
The Project Coordinator will assign a Site Manager for your build, and they will arrange a Pre Construction site meeting with you at the property to discuss the various steps along the way to completing your Granny Flat!
They will be your point of contact through this stage and will do everything they can to have our team of tradesmen battle through pandemics and wild weather to deliver you a Granny Flat you will be proud of.
Site Visit & Property Specific Proposal
Our Consultant will meet with you and review all of the factors that will impact on the build of the Granny Flat such as sewer location, slope of the land or items that may need to be demolished or removed.
They will discuss with you what your preferences are for build materials, and then put together a very detailed, fixed price proposal that provides all of the information about our high level of quality inclusions and the best possible estimate of any specific site costs.
You will be invited to come into our Showroom where we have 2 Granny Flats built so that you can see firsthand what is included in your build, and review all of the details, amending anything required.
Approval Stage
When your Design is finalised, you sign the Construction Contract and we will obtain all of the full architectural plans, the structural engineering and hydraulic engineers reports, Basix report and the Certifiers approval & council certificate, resulting in a set of Approved Plans.
Whilst this is all happening in the background, you can come in and make all of your material and colour selections from our large range of optional materials and colours.
If your approval was via a DA through local council, this is expected to be a longer process than obtaining approval via CDC, but we will keep you up to date with progress reports.
2 Bedroom vs 3 Bedroom Granny Flat: What Choice is Right for You?
Choosing between a 2- or 3-bedroom granny flat depends on several factors, including the size of your land, the size of your family, what you’re using the granny flat for, and your budget.
If you’re not sure which granny flat will work best for you, Amescorp is more than happy to help you decide. Contact us at 02 8798 9858 to find out more!
| 1 Bedroom | 2 Bedroom | 3 Bedroom | |
|---|---|---|---|
|
Typical size |
37-60m2 |
Up to 60 m² |
Larger blocks, subject to council rules |
|
Best for |
Single occupant, a couple, a rental studio or home office |
Small family, shared living, or extra rental income |
Extended family, or maximum rental yield |
|
Build cost |
Lowest of the three |
Mid-range |
Highest, largest footprint |
What Are the Benefits of a 3-Bedroom Granny Flat?
The benefits of a 3-bedroom granny flat include:
A 3-bedroom granny flat provides a full-sized living space for families or multi-generational living.
Larger accommodation will naturally attract more families, resulting in a higher rental income.
Adding a secondary dwelling instantly increases the value of your property.
There is enough room for family or friends to stay when they are visiting. A granny flat gives everyone privacy and space.
You can use the granny flat as a workspace, art studio, or gym, with enough room to serve multiple purposes.
Why Should You Choose Amescorp to Build Your 3 Bedroom Granny Flat?
Amescorp has over 25 years of experience designing and constructing granny flats across Sydney, the Central Coast, Newcastle, and the Hunter Valley.
Through years of experience, we have learnt how to streamline the process to make it as stress-free as possible, and we work alongside our clients every step of the way (from concept to completion).
We handle everything in-house with dedicated architects, engineers, and construction teams who collaborate throughout the process. We don’t have to worry about outsourcing or miscommunication, and we can make modifications or design changes in real time without costly delays.
Pricing is understandably one of the most pressing concerns when building a granny flat.
At Amescorp, we are transparent about our pricing; what you see is what you pay. We provide finalised quotes, free site inspections and clear documentation and communication throughout the process.
We know that everybody has different design tastes and requirements for a granny flat. That’s why we modify and customise our granny flat designs and floorplans to suit our clients’ needs, lifestyle and design vision.
We believe our clients deserve the best granny flat, and we work hard to deliver your vision and a flat that serves your needs. Our directors and site managers are directly involved in every build, keeping communication and updates clear.
Energy-efficient practices are a huge part of what we do to reduce our environmental footprint and save on utility bills.
Frequently Asked Questions
Most granny flats in NSW can go up to 60sqm, but the exact size depends on your block. We build them in all sorts of sizes to fit — 37sqm, 45sqm, 48sqm, 50sqm, right up to 60sqm.
Smaller blocks or tighter zoning rules might mean a smaller size works better. That’s why we always start with a site assessment before locking in a floor plan.
There is no single answer, as the exact cost depends on several factors, including your land size, the floorplan/design you choose, any inclusions, and site conditions.
The exact timeframe depends on the local council and build site, as approvals and site conditions can affect the schedule.
Amescorp can give you a clearer timeline once we assess your site.
The maximum floor area and lot size rules are laid out in the NSW Housing SEPP (State Environmental Planning Policy), and they can change.
Stay up to date with the latest requirements on the NSW Planning Portal, or check with us to see what applies.
Yes, and many flats are built for that purpose. However, you will need to check with your local council. Double-check with your local council or contact Amescorp to confirm the requirements.
Yes. Most granny flats, no matter the number of bedrooms, will need a Complying Development Certificate or a full Development Application (DA). Amescorp will manage this process for you.
Costs vary depending on size, finishes, and site conditions. As a guide, a 3 bedroom granny flat typically starts from $160,000 to $190,000 for the build itself, excluding site costs (like slope, access, sewer encasement, demolition, concrete cutting in order to trench for services).
Because every block is different, we recommend a site assessment to get an accurate, all-inclusive quote for your specific project.
For a more accurate estimate
If you want to know more about the investment benefits, give us a call!
