What is included as standard, what it costs, and what the buyer would have paid for it as an option. Every inclusion is a margin decision made once and paid for on every home after it.
Reference scale, grade Derived. Not a forecast for your business. This figure describes what a decision of this shape has been worth at this scale of operation, drawn from the evidence named in section 02. No payback, return or year-one figure appears in this brief — no fee has been quoted, so those numbers cannot exist yet. They are computed against a signed quote and stated with the fee beside them.
An inclusion goes into the standard spec to win against the builder across the road. It works. It also comes out of margin on every closing for the next three years, and nothing on the P&L separates it from the rest of direct cost.
Specs get reviewed when a competitor moves, not when the cost of an existing inclusion moves.
The model prices each standard inclusion against its options-ledger equivalent — what buyers paid when it was optional — and against what competing specs include today. Some inclusions buy traffic. Some are given to buyers who were already signing.
The output is a spec sheet with a dollar figure beside every line and a note on which competitor actually matches it.
The rest of this model — the data sets it runs on, the cause split, the working behind the reference figure and a sample output — goes out by email. Two fields, nothing else.