KTG Construction Group designs and builds decks and outdoor entertaining areas across Melbourne, Geelong and the Mornington Peninsula that connect naturally to your home and stand up to the weather for years.
As a registered builder (CDB-U 69640), we build outdoor spaces with the same structural care as the house itself: proper footings, correct falls and fixings, and finishes chosen for the conditions.
Outdoor spaces we build
- Low-maintenance composite decks: no oiling or staining, with a consistent finish year after year.
- Timber decks: the warmth of natural hardwood, detailed and finished properly.
- Raised and multi-level decks: for sloping blocks or to meet a raised floor level.
- Outdoor entertaining areas: spaces for cooking, dining and relaxing that flow from your living room.
Built to last
Most deck problems start underneath: undersized footings, poor ventilation or the wrong fixings for the material. We get the structure right first, then focus on the details you see every day, such as board layout, edge trims, steps and how the deck meets your doors and garden.

What's included
- Site visit, design input and material recommendations
- Building permit where your deck's height or size requires one
- Footings, subframe and decking
- Steps, balustrades and edge details
- Integration with your doors, paving and garden levels

Frequently asked questions
Composite or timber?
Composite needs very little upkeep and keeps its colour, while hardwood has a natural look but needs regular oiling. We'll walk you through the trade-offs for your home and budget.
Do I need a permit for a deck?
It depends on the deck's height, size and position on your block. Many raised decks need a building permit. We'll confirm what applies before we start.
Can you add a deck as part of a bigger project?
Yes. Outdoor spaces work best when they're planned with an extension or renovation, so the levels and openings line up.