Step 5 · Property: due diligence + fair-value triangulation

Why Step 5 looks procedural and isn't

The buyer who reaches Step 5 has done the strategic work. The state's right, the city-lane's right, the suburb scores well, the pocket passes. What remains is procedural: inspect the property, value the property, decide the offer.

Most procedural failures at Step 5 fall into three buckets:

1. Inspection skipped. The buyer waives the building-and-pest because they're under time pressure. Roughly 1 in 8 contracts has a defect that materially shifts the offer or breaks the deal. The buyer who skips the inspection inherits the defect at no discount. 2. Single-signal valuation. The buyer values off the agent's "guide price" alone, or off portal auto-valuation. Both signals are systematically biased. The buyer who triangulates three independent inputs lands closer to fair value than either single signal. 3. No off-ramp. The buyer falls in love with the property and rationalises away the failing signal. Step 5's job is to surface the off-ramps: the points at which the buyer should walk rather than negotiate.

This chapter covers the inspection sequence, the fair-value triangulation, and the off-ramp framework.

The inspection sequence

For any property the buyer is seriously considering (not the speculative inspection, the actual offer-prep inspection), five reports run in parallel.

Building inspection (mandatory)

A licensed building inspector walks the structure and reports on visible defects. Cost: A$400-800 metro, A$500-1,000 regional. Typical turnaround: 24-48 hours. The report covers structural integrity, roof condition, water-damage signs, render cracking, joinery condition.

What to read for: any line item flagged "major defect" or "requires structural engineer assessment." Both are negotiation levers; some are walk-away signals.

Pest inspection (mandatory anywhere with timber framing)

A licensed pest inspector identifies active or historic termite activity, borer activity, and structural-pest damage. Cost: A$250-450 standalone, often discounted as a building-and-pest combined report (A$550-1,000). Turnaround: 24-48 hours.

Active termite activity is a walk-away signal in most cases. Treatment is meaningful, but the structural damage assessment usually requires opening up walls. Historic activity that's been treated and certified is a price-adjustment signal, not a walk-away.

Strata report (mandatory for units, townhouses, and any strata-titled property)

A strata-search company pulls the body corporate's records: levies and special-levies history, sinking-fund balance, pending capital works, current insurance, current disputes, recent meeting minutes. Cost: A$220-380 per search. Turnaround: 1-3 business days.

What to read for: thin sinking fund (under 5% of replacement cost) is a yellow flag, special levies likely. Pending capital works: specific dollar amount plus funding plan. Insurance: building-only or full strata cover. Disputes: any building-defect claim against the developer (common in <10-year-old buildings) is material to value.

Title search (mandatory)

The buyer's solicitor pulls a current title-and-interests search. Cost: typically A$30-50 included in conveyancing. Turnaround: same day.

What to read for: registered easements (drainage, vehicular access, party-wall), restrictive covenants (often missed; can prevent renovations), heritage overlays, pending registrations.

Section 32 / vendor disclosure statement (mandatory before contract)

The vendor must provide a disclosure statement (Section 32 in VIC, Section 52 in NSW under the Conveyancing Act, Form 1 in SA, etc.). Cost: vendor's expense, free to buyer. Turnaround: usually delivered with the contract.

What to read for: disclosed easements and covenants matching the title search, current rates, water, body-corporate, any disclosed defects, planning-status confirmations.

The buyer's conveyancer or solicitor reads all five and produces a single combined memo before the offer goes in. Don't sign a contract before the memo is in your inbox.

Fair-value triangulation: three independent inputs

Single-signal valuation is the most common Step 5 mistake. The agent's guide price is a sales tool, not a valuation. Auto-valuations from listing portals lag the market by 2-4 months and don't see the property's specific condition or layout.

Triangulate three independent inputs.

Input 1: comparable-sales floor

Three to five recently-settled sales of similar dwelling-type, similar bedroom count, within 800m walking distance of the subject property, settled in the last 6 months. Adjust each comp for differences in:

• Land area (price-per-square-metre adjustment for the difference).
• Building condition (recent renovation premium, un-renovated discount, typically 8-15%).
• Position within the pocket (street-level signals from Step 4: flood overlay, transit walkability, school catchment).

Settled sales beat listed sales. Settled has the actual price the market cleared at. State land records expose settled-sales data across every state. The propautopilot suburb-page surfaces the comparables ladder pre-adjusted on Investor tier.

Input 2: gross-to-net yield model

For investment property, fair value can be back-calculated from achievable net rent at a target gross-to-net yield. Net rent ÷ target yield = fair value.

Net rent = gross rent × (1 − vacancy% − management% − maintenance% − rates% − insurance%). Target gross-to-net yield depends on the lane (Step 2): capital-metro 3-3.5%, regional hub 4.5-5.5%, commuter belt 4-4.5%.

This input acts as a yield ceiling. If the comparable-sales floor implies a price that delivers below the lane-typical yield, the buyer is overpaying versus the income the property can throw off.

Input 3: replacement-cost-plus-land floor

For older houses on standalone titles, fair value has a hard floor at the cost to rebuild plus the cost to acquire a comparable site. Replacement cost = building cost per square metre × build area (NSW: A$2,500-4,000/m² as of 2026 for standard residential build; varies by state). Land value = comparable bare-land sales in the suburb (or the strata sites for a unit conversion).

This input acts as the "you can't pay below this and have the seller transact" floor. In tight markets, sellers won't transact below replacement-cost-plus-land. In soft markets, distressed sellers occasionally do. When all three inputs converge, fair value is high-confidence. When they diverge by more than 8-10%, the buyer needs to understand which input is mis-priced before offering.

The off-ramp framework

A property at the property-search-and-offer stage hits one of four states.

• Green light: all five inspections clean OR clearly priced-in via the comparable-sales discount. Three-input triangulation converges within 5%. Offer at the lower-end of the triangulated band.
• Yellow flag: one inspection flagged a defect that's negotiation material (e.g. roof needs replacing in 3-5 years). Triangulation diverges 5-10%. Negotiate the offer down by the cost-to-cure, not by the headline asking-price discount.
• Red flag: two or more inspections flagged material defects. Triangulation diverges over 10%. Vendor disclosure has a heritage-overlay or covenant the buyer didn't expect. Walk unless the seller meets a price 8-15% below the upper-triangulation band.
• Walk-away: active termite activity uncontained. Structural-engineer-assessment-required defects. Strata sinking-fund under 3% of replacement cost. Restrictive covenant prevents the buyer's intended use. No price negotiates these away.

The off-ramp framework is the buyer's protection against the loss-aversion that hits hardest at Step 5. By the time three properties have been inspected, the buyer has spent A$1,500-2,500 on inspections and is psychologically committed to closing on something. Pre-committing to the framework before inspections start is the cheapest insurance the buyer can buy.

Putting Step 5 together

1. Run all five inspections in parallel within 5-7 days of the buyer deciding to seriously consider the property. 2. Pull the conveyancer's combined memo and read every flagged item. 3. Triangulate the three fair-value inputs: comparable-sales floor, gross-to-net yield model, replacement-cost-plus-land floor. 4. Classify the property against the four off-ramp states. 5. Set the offer floor and ceiling for Chapter 8 (Negotiation): floor = lower triangulated band, ceiling = upper triangulated band minus any defect-cost.

The property-level scorecard updates in real time on Investor tier as inspection reports are uploaded. Run-the-deal-analyser on the chosen property hands the offer-floor, target, and ceiling straight into Chapter 8.

Common mistakes at Step 5

• Waiving the building-and-pest under time pressure. The 1-in-8 defect rate doesn't change because the buyer is in a rush.
• Single-signal valuation. Agent guide price is a sales tool. Auto-valuations lag. Triangulate three inputs.
• Skipping the strata-report read because "the building looks new." 5-10-year-old buildings have the highest defect-claim rate.
• No off-ramp framework. Loss-aversion plus sunk-cost on inspections push the buyer past walk-away signals.
• Negotiating the asking price discount instead of the cost-to-cure. A roof flagged for replacement is a A$15-30k cost-to-cure adjustment, not a headline 5% discount.
• Trusting the vendor disclosure to be complete. The disclosure statement is what the vendor says is true. The title search plus the Step 4 pocket scorecard catch what the vendor didn't disclose.

Now do this on your shortlist: run the deal analyser

The propautopilot deal-analyser at /api/deal/[listingId]/analyse runs the three-input triangulation against any active listing on Investor tier. Output: offer floor, target, and ceiling card, ready for Chapter 8.