Understanding Construction Finance

Navigate construction finance with confidence. We provide educational resources and connect you with specialist lenders who understand owner-builder projects.

Understanding your financing options is crucial to a successful owner-builder journey. We can refer you to specialists who will guide you through the process.

Important: Owner Builder Buddy does not provide financing. We connect you with specialist mortgage brokers and lenders who understand owner-builder projects.

How We Help with Financing

✓We provide educational resources about owner-builder finance options
✓We connect you with mortgage brokers who specialise in construction loans
✓Through our referral partners, we help you navigate the application process
✗We do NOT provide loans or financing directly
✗We are NOT a bank or lending institution
✗We do NOT provide financial advice

Educational Resource: The information below is for budgeting purposes only. Through our referral partners, we connect you with mortgage brokers who can help you secure financing — we do not provide loans directly.

Building Cost Breakdown

See the real cost difference between traditional builders and owner-building

Granny Flat / Renovation

Cost ItemAmount
Base Construction Cost$150,000
Traditional Builder
Builder Margin (40%)$60,000
Total Cost$210,000
Owner Builder
Platform Fee$2,500
Total Cost$152,500
Your Savings
$57,500
40% saved

3-Bed, 2-Bath Home

Cost ItemAmount
Base Construction Cost$320,000
Traditional Builder
Builder Margin (25%)$80,000
Total Cost$400,000
Owner Builder
Platform Fee$5,500
Total Cost$325,500
Your Savings
$74,500
25% saved

Note: Builder margins vary by project type. Residential homes typically see 20-25% margins, while granny flats and renovations see 40%+ margins due to smaller project size and higher relative overhead.

Construction Cost Calculator

Understand how your construction budget breaks down across building categories

Enter your construction budget for materials and trades

Show percentages only

Construction Cost BreakdownBased on $275,000 construction budget

Site Preparation

8-12% of construction
$22,000 - $33,000
Includes:
  • •Site clearing
  • •Excavation
  • •Soil testing
  • •Temporary services

Foundation & Structure

25-30% of construction
$68,750 - $82,500
Includes:
  • •Concrete slab
  • •Framing
  • •Roofing
  • •External walls

Services & Utilities

15-20% of construction
$41,250 - $55,000
Includes:
  • •Plumbing
  • •Electrical
  • •HVAC
  • •Gas connections

Internal Fit-out

20-25% of construction
$55,000 - $68,750
Includes:
  • •Insulation
  • •Plasterboard
  • •Flooring
  • •Internal doors

Kitchen & Bathrooms

15-20% of construction
$41,250 - $55,000
Includes:
  • •Kitchen cabinetry
  • •Bathroom fixtures
  • •Tiles
  • •Appliances

Finishing & External

10-15% of construction
$27,500 - $41,250
Includes:
  • •Painting
  • •Landscaping
  • •Driveways
  • •Fencing

Owner-Builder Financing FAQ

Understanding your financing options as an owner-builder in Western Australia

Need Help Finding Owner-Builder Financing?

Through our referral partners, we can connect you with mortgage brokers who specialise in owner-builder construction loans and help you find the right lenders for your project.

Start Your JourneyConnect with Finance Specialists

Disclaimer: Owner Builder Buddy Australia Pty Ltd does not provide financial services, lending, or mortgage brokering. We provide project management software and educational resources. Finance referrals are made to licensed third-party mortgage brokers. Always seek independent financial advice. Any cost estimates provided on this page are indicative only and may vary based on location, materials, market conditions, and project scope.