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Two-storey house with a single-storey granny flat further back on the block, joined by a paved side path

House and Granny Flat Builders in South West Sydney

Building a new main home and a granny flat as one project, so both are planned to work together on the block from the start.

Which project is yours?

This page

New house and granny flat together

You are building a new main home, and want a granny flat planned alongside it. Both dwellings are designed as one project.

A different project

Granny flat on an existing property

You already have a house and want to add a separate granny flat in the yard.

Standalone granny flats

Planning both at once

Why planning together helps

When the main house and granny flat are designed side by side, decisions about one can take the other into account, rather than fitting a second home around what is already there.

Backyard with tiered sandstone retaining walls, planted terraces, a lawn and a covered patio
  1. Coordinated layouts

    Both homes are planned at the same time, so living areas, bedrooms and windows can be arranged to suit each other.

  2. Privacy

    Each home can have its own entry, outlook and outdoor space, without overlooking the other.

  3. Outdoor space

    The yard is planned once for both homes: shared areas, private courtyards, paths and where the lawn goes.

  4. Family needs

    Multi-generational living, a teenager growing up or a relative moving closer. The plan can reflect who lives where.

Before you get in touch

  • Your block address, and whether you own it yet.
  • Who will live in the main house and who will live in the granny flat.
  • Rough room needs for each home.
  • How you want the backyard to work for both households.
  • Any plans, sketches or photos of homes you like.

Common questions

Can the granny flat be added later instead?

It can be a separate project later. If you already have a house, see standalone granny flats.

Will my block allow both?

That depends on the block and the rules that apply to it. Share your address and we can talk it through.

Can the main house be single-storey or double-storey?

Either can be discussed. The choice depends on the block, the space you need and how much yard you want to keep.

Let’s talk about your house and granny flat

Tell us about your block and who will live in each home. A phone call is the easiest way to start.

Tell Us About Your Project

Share a few details about what you have in mind.

Call 0415 288 474info@altechconstruction.com.au

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