How to Plan a Complete Backyard Renovation

A complete backyard renovation is a construction project. It involves demolition, excavation, structure, services, waterproofing, trades in sequence and often council approval. Treated like a shopping list of features, it goes over budget. Treated like a build, it does not.

Step 1 - Write the brief before the wish list

How many people do you want to seat? Do you cook outside, or reheat outside? Do children need lawn, and for how many more years? Is privacy from one neighbour the real problem? A brief written around use produces a better garden than a brief written around features.

Step 2 - Understand the site

Level survey, soil, aspect, drainage, existing trees, easements, access width and boundary conditions. These constraints are not negotiable and they shape everything. A 4-metre fall across the block or 900mm side access changes the budget more than any material choice will.

Step 3 - Set a real budget range

Before design, agree a range rather than a number, and know what sits inside it. Structural and buried work - excavation, retaining, drainage, slabs, services - routinely accounts for 40 to 60 per cent of a full rebuild before anything visible is installed.

Step 4 - Design, then approvals

Concept, refinement, documentation and costing, then the approval pathway that matches: exempt, CDC or DA. Getting the pathway assessed at concept stage often lets the design be shaped to avoid a DA entirely.

Step 5 - Build in the right order

• Demolition and site clearing
• Bulk excavation and earthworks while machine access exists
• Structural - retaining, footings, pool shell, deck substructure
• Services - drainage, stormwater, electrical, irrigation, gas conduits
• Hard landscape - paving, coping, steps, walls, screens, carpentry
• Soft landscape - soil profiles, planting, turf
• Finishes - lighting, furniture, outdoor kitchen appliances, commissioning

Order of works is not bureaucracy. It is what stops a new deck being cut apart to run a drainage line.

Step 6 - Allow for contingency and weather

We recommend a 10 per cent contingency on any full rebuild. Rock is the usual culprit in Sydney - you cannot know what is 800mm down until you dig. Sydney also averages enough wet days that a 16-week program should be quoted with wet-weather allowance built in.

Step 7 - Plan the first two years

A garden is handed over unfinished by nature's standards. Establishment watering, first-year pruning, mulch top-up and lighting adjustment as planting matures are part of the project, not an afterthought. We hand over a maintenance schedule with every build.