Which approach fits which investor.

The seven pages behind this one describe machinery that does not care who owns it. NOI is computed the same way for a dentist and a demolition contractor; a lender's coverage test does not ask where the down payment grew up. The mechanics are the same for everyone. What differs is which of them bears weight in a given life — which page answers the question actually keeping a particular buyer up at night. What follows is a map, not advice: four common situations, described, and the pages that tend to carry the load in each.

An investor holding paid-down residential equity

This buyer usually arrives from condos or a duplex — a decade of tenants, a mortgage well ahead of schedule, and instincts trained entirely on comparable sales. The heaviest page for them is what you're actually buying, because the pricing model itself changes: nothing in residential prepares an owner for a building priced as a multiple of its income, where what the property next door sold for is nearly beside the point. Close behind it is the lender's math — on a building, the building must qualify, not the borrower alone, and a strong salary with clean credit no longer carries a file the way it carried a duplex. The third is what it really costs to run: superintendents, common-area hydro, waste contracts, vacancy allowances — expense lines residential ownership never taught, and the ones most often missing from a new buyer's first pro forma.

An incorporated professional with retained earnings

Here the capital already lives inside a corporation and is looking for work. The mechanics that matter most are the ones about discipline with numbers: what it really costs to run and where returns leak, because a professional used to clean statements can read a seller's pro forma more generously than it deserves, and normalizing a building's numbers is a habit that has to be learned deliberately. How to read a listing is the applied version of the same habit. The questions this buyer usually asks first — whether to purchase inside the corporation, how the income should flow, what the structure means at sale — are real questions, and this library does not answer them. They belong with their accountant, before an offer rather than after.

An owner who sold a business

This buyer has run payroll, negotiated leases, replaced a supplier mid-contract. The operating pages read differently to them than to anyone else: how buildings become worth more and what value-add actually involves describe work they recognize — a repositioning plan is an operations plan wearing different clothes, and the honest question is whether they still want that job. Where returns leak is the familiar risk register in a new costume: deferred maintenance is deferred capex, turnover is churn, an under-market rent roll is a mispriced product line. The vocabulary is new; the instincts transfer.

A first building, full stop

Whatever the origin of the capital, a first building runs the same gauntlet, and three pages cover most of it: what you're actually buying, then what it really costs to run, then the lender's math — the pricing model, the true expenses, the financing test, in that order, because each one sets up the next. The First Building course on the Learn hub covers this same ground as a sequence, built to be read start to finish; this library is the reference shelf behind it.

That is what this library is — a shelf, not a path. There is no order to read it in beyond the order your decisions arrive in; read the page the current decision needs and leave the rest for later. And when a decision becomes real — a specific building, a specific rent roll, a number on a page — the conversation it deserves is with your own accountant and lawyer, and, where the building itself is concerned, with a brokerage that will show you its arithmetic.

These are situations, not recommendations, and none of them assesses what suits any particular reader. That judgment belongs to you and your own advisors.