Coastline Granny Flats

More homeowners are building granny flats and it’s not hard to see why.

✔ Rental income potential
✔ Multi-generational living
✔ Flexible lifestyle space
✔ Future resale value

But functionality matters.

A well-designed granny flat should feel completely independent, private, practical and fully self-contained.

When it’s done right, it works for today and adds value for tomorrow.

Every granny flat we build starts with one question —
Who’s it for?

Because whether it’s built for family, guests, or as an investment, the layout, finishes and features should reflect how it’s going to be lived in.

🏡 Custom designs
🌿 Quality materials that last
💡 Smart storage and natural light in every corner

From concept to completion, every Coastline Granny Flat is designed to feel like home — not a “second dwelling.”

To find out more book an on site inspection via our website.

Granny flats have come a long way from being a simple extra room out the back.

With a custom design, they can add incredible value, functionality, and flexibility to your property.

Here’s why they’re a smart investment 👇

✅ Extra Income potential: Rent it out for passive income or short-stay accommodation.
✅ Multi-Generational Living: Keep family close while still maintaining privacy and independence.
✅ Increase Property Value: A well-designed granny flat can significantly boost resale appeal and overall property value.
✅ Flexible Use: Think home office, studio, guest house, or future downsizing option… the possibilities are endless.

With a custom build, you’re not locked into a cookie-cutter design.

Your granny flat can reflect your home’s aesthetic, maximize your block, and be tailored to your lifestyle.

When it comes to adding extra living space that’s self-contained, stylish, and adds serious value to your property;

✔️A custom granny flat ticks all the boxes.

Book your onsite inspection to see what’s possible with your property today.

🛠️ Boolaroo Project

More space, more freedom — without selling up or sacrificing lifestyle.

If you’ve ever thought “we could really use a bit more room” — a custom granny flat might be exactly what you need.

Whether it’s for:
✔️ Aging parents who want to stay close
✔️ Young adults needing independence (without moving far)
✔️ A smart way to earn extra income or Airbnb it
✔️ A quiet home office, creative studio or guest retreat

Our granny flats are beautifully designed, built to last, and tailored to your block, budget, and vision.

📞 Head to the website to book a free site check and see what’s possible on your property.

📸 Project | Glendale

They say a lot happens behind closed doors — and with our granny flats, it’s true.

Clever storage, efficient layouts, and smart design mean every inch is working hard for you.

Whether it’s extra room for family, a home office, or a rental opportunity, we build spaces that live large — no matter the footprint.

To find out more about any of our custom designs and builds — contact us today.

Whether it’s natural light pouring in during the day or soft, ambient lighting at night—no detail is spared when designing a granny flat.

We carefully tailor each design to suit the block, capturing natural light and airflow to enhance both functionality and aesthetics.

Because when the sun sets and your space lights up, it should look just as stunning as it does in daylight.

If you’re thinking of adding an extra space — contact our team today!

Gone are the days when granny flats were just for grandparents.

Today, they are a smart, flexible, and affordable solution for a variety of needs and desires including —

Growing Families: Need an extra room for the kids or a quiet office space? A granny flat can expand your living area without the hassle of moving.

Caring for Loved Ones: Keep your aging parents or a special loved one close, while providing them with the independence they cherish.

Savvy Investors: A granny flat can be a lucrative investment, offering high rental returns in New South Wales.

At Coastline Granny Flats, we’re not just building units; we’re creating opportunities for families to grow, investors to prosper, and loved ones to maintain their independence with dignity in a custom tailored to you extra space.

Dreaming of your own granny flat? Let’s make it a reality. Contact us today to start planning your versatile new space!

Creating privacy for a granny flat on the same block as the main home can be a challenge—but smart design makes all the difference.

For this Kotara project — The main house was positioned higher at the front of the block, so we designed a custom timber privacy wall to create a secluded retreat for our clients.

To enhance functionality, we integrated a built-in bench—perfect for soaking up the sunshine and enjoying the serene bush outlook.

A well-thought-out design not only ensures privacy but also adds value and comfort to your space.

Which is why building a custom granny flat is the best solution for creating the perfect extra depending on your block.

With Coastline there’s no cookie cutter designs. We helped our clients create the perfect design to optimise the block, their needs and style.

Highlight features - 40m2 entertaining deck, 2 bedrooms, open plan kitchen & living with a bathroom + laundry.

🏡 Thinking of building a custom granny flat? Get in contact with our team today.

This design will never grow old.

Incredible outside as it is in — this stunning granny flat stands out from the rest and gives our clients the ultimate extra space that feels like home.

Designing the perfect granny flat is about blending functionality with style while ensuring it meets all the needs of its future occupants.

Here are the top 5 must-haves to keep in mind:

1. Smart Spaces with multi-functional design:
Every square meter counts in a granny flat! Incorporate clever storage solutions, open-plan layouts, and multi-functional furniture to maximise the space while keeping it uncluttered.

2. Functional Kitchen Design
A compact yet fully functional kitchen is essential. Include quality appliances, sufficient counter space, and clever storage options to make meal prep easy and enjoyable. You could even incorporate a study desk like we did in our Teralba project.

3. Natural Light & Ventilation
Large windows, skylights, or sliding doors are non-negotiable for creating an inviting and airy space. Natural light not only makes the space feel bigger but also improves energy efficiency.

4. Privacy Considerations
Design the layout with privacy in mind, whether it’s the placement of the bedroom, soundproofing, or separate access points. This is especially important for granny flats located close to the main home.

5. High-Quality Finishes
Durable materials and stylish finishes go a long way in creating a space that feels more like a home that will last & bring in more return potential. Opt for flooring, cabinetry, and fixtures that are both practical and beautiful.

If you’re thinking of building a granny flat in 2025 — contact our team to find out how to get started.