Granny Flats & External Office Spaces
Custom Granny Flats & Home Office Solutions
Are you looking to add a self-contained living space or a functional external office to your home? At Renovation Group, we specialise in high-quality granny flats, backyard studios, and home office spaces that are tailored to your needs, budget, and available space.
Whether you need additional living quarters, a rental investment, or a dedicated workspace, we handle design, council approvals, and construction across Sydney’s North Shore, Inner West, and Eastern Suburbs.
Our Granny Flat & External Office Services
We provide custom-designed solutions for secondary dwellings, external studios, and backyard offices.
01.Custom Granny Flats
Design and build self-contained, high-quality granny flats that meet NSW building regulations.
✔ One-Bedroom & Two-Bedroom Granny Flats – Spacious, modern layouts tailored to your needs.
✔ Fully Self-Contained Living – Includes kitchen, bathroom, laundry, and storage.
✔ Custom Design & Energy Efficiency – Designed to complement your existing home while being sustainable and cost-efficient.
💡 How many bedrooms can a granny flat have? NSW regulations allow up to two bedrooms in a granny flat.
02. Backyard Studios & External Office Spaces
Create a private, functional workspace separate from your main home.
✔ Home Office Setups – Perfect for remote work, consulting, and creative studios.
✔ Garden Studios & Retreats – Ideal for hobbies, music, or yoga spaces.
✔ Modular & Prefabricated Options – Fast installation with customisation options.
💡 Do I need council approval for an external office? Generally, backyard offices under 20m² may not require council approval.
03. Garage Conversions into Granny Flats
Convert an existing garage into a fully functional living space.
✔ Garage-to-Granny Flat Conversions – Cost-effective option with minimal structural changes.
✔ Self-Contained Living with Modern Amenities – Kitchen, bathroom, and private entrance.
✔ Legally Compliant & Council Approved – We ensure your conversion meets NSW regulations.
💡 How much does it cost to convert a garage into a granny flat? Costs range from $50,000 – $120,000, depending on size and features.
Do You Need Council Approval for a Granny Flat in NSW?
✔ Yes, a granny flat requires council approval under the NSW Complying Development Code.
✔ The minimum land size for a granny flat is 450m², with a minimum 12m street frontage.
✔ Must be located at least 3m from the rear boundary and 0.9m from the side boundary.
✔ Granny flats cannot be sold separately but can be rented out for income.
💡 Need help with approvals? Our team handles all compliance and permits for a hassle-free process!
FAQs About Granny Flats & External Offices in Sydney
How much value does a granny flat add to a property?
A well-designed granny flat can add $100,000 – $300,000+ to your home’s value, depending on size and location.
Can I rent out my granny flat in NSW?
Yes, granny flats can be legally rented out, offering passive income opportunities.
What is the cheapest way to build a granny flat?
- Modular/prefabricated designs reduce labour costs.
- Garage conversions offer an affordable alternative.
- Standardised designs lower architectural expenses.
How long does it take to build a granny flat?
Construction typically takes 12–16 weeks, depending on complexity and approvals.
How much does an external office cost?
A basic backyard office or studio starts at $15,000, with high-end custom designs reaching $50,000+.
Can I convert my garage into a granny flat?
Yes! With proper insulation, plumbing, and ventilation, garages can be converted into fully self-contained granny flats.
Get a Free Consultation for Your Granny Flat or External Office
- Call us on 1800 94 06 06
- Servicing Sydney North Shore, Inner West, and Eastern Suburbs