
Liverpool City · postcode 2179
Home Renovations in Leppington: Upgrading a New Project Home
The keys are new. So is the list of things you'd have done differently.
Most Leppington homes went up after 2015, many from a project builder's standard range. Owners move in, live with it for a year, and then start calling about the kitchen, the alfresco, the flooring and the missing built-ins. Good upgrades. Just do them in the right order around the original builder's warranty.
Short answer
Which comes first in a new Leppington home: fixing defects or upgrading?
Deal with defects before upgrades. NSW statutory warranties cover general defects for two years and major ones for six, so report problems to the original builder first and don't let another trade alter the affected work. Then upgrade: kitchens (about $19,500 to $22,000 on Rawlinsons Sydney rates), alfresco enclosures, built-in robes, flooring and air conditioning. Estate design guidelines may still apply to anything external.
Written and reviewed by Oliver Alameri
Licensed builder, NSW Contractor Licence 487805C · Founder, Buildana
Fact-checked
Defects first, upgrades second
NSW law builds warranties into every residential contract: a major defect is protected for six years after completion, anything else for two. Cracked tiles, sticking doors, leaking showers, drainage that ponds against the slab. Those belong to the original builder.
So write them down, photograph them and lodge them in writing before anyone else touches the house. If a new trade rips out a leaking shower to renovate it, proving the original fault gets much harder.
Once the defects are fixed or formally on record, upgrade freely.
- List and photograph defects room by room
- Report in writing to the original builder
- Keep your handover documents and warranty certificate
- Leave defective work untouched until it's resolved
Renovate over a defect and you may have just paid to hide someone else's mistake.
The upgrades Leppington owners ask for
Kitchens, most often. Project-range kitchens tend to be short on bench space, storage and a proper pantry. Adding a butler's pantry, extending the island or replacing cabinets on the same plumbing positions keeps costs sensible.
Outdoor living next. Many homes here came with a small alfresco under the main roof. Extending it with a roof, better paving and an outdoor kitchen makes the most of a small yard. Enclosing it as a room is a bigger job: slab levels, insulation and ceiling heights all need checking.
Then the finishing items project builders leave out: built-in robes, a laundry fit-out, ducted air conditioning, better window coverings, solar. None need approval inside the house. All add up.

Got a list of things you'd change?
Send me your Leppington address and the list, defects included. I'll help sort what's the original builder's job and price the upgrades that are yours.
0476 300 300Small lots and estate rules
Lots of 300 to 500m² leave little room to extend outward, and Leppington's precinct controls set garage setbacks, facade articulation and materials. Some estates also carry developer design guidelines or covenants for a period after settlement. Check both before changing anything visible from the street.
Class H clay moves. Any new slab, pergola footing or retaining wall gets engineered, and paving must fall away from the house so water doesn't collect against the existing slab edge.

Approvals and cost
Internal renovations and like-for-like replacements are generally exempt. External additions, roofed alfresco extensions and enclosures may fit complying development, approved in about 15 to 25 working days, or need a Liverpool City Council DA, typically 10 to 14 weeks.
Rawlinsons puts a mid-range Sydney kitchen at $19,500 to $22,000 and a bathroom at $23,500 to $26,500. Liverpool's cost index sits below the Sydney baseline. Alfresco and joinery work are priced from the design.
Before the first upgrade
What I'd check in any Leppington home under ten years old.
- 01
Have all defects been reported to the original builder in writing?
- 02
When did the home reach completion, for warranty timing?
- 03
Do estate guidelines or covenants still apply?
- 04
Which upgrades are internal only?
- 05
Where does surface water go around the slab?
- 06
Is there roof and switchboard capacity for air conditioning and solar?
Upgrading a new Leppington home
Will renovating void my new home warranty?
Statutory warranties can't simply be cancelled, but altering defective work before it's documented can make a claim hard to prove. Report defects first.
How long is the builder's warranty in NSW?
Six years if the defect is major, two years if it isn't, with the clock starting at completion. Those periods are set by NSW home building law.
Can I extend my alfresco without approval?
Some small structures are exempt within strict limits. Most roofed extensions need complying development or a DA, especially on small lots.
Do you build new homes in Leppington too?
Yes. Custom homes, duplexes and granny flats on Leppington's registered lots, as well as renovations.
Sources and references
Costs are from the Rawlinsons handbook with the local cost index applied; rules and timeframes are checked against the sources below.
Make the new house yours.
Leppington upgrades done in the right order, with the warranty kept intact.