I was eyeing the American standard cadet 3 toilets if I was to replace.

It can be worth it to spend a little bit more on those items to limit recurring replacement costs.I hope that’s a helpful starting point.

But my SFR won't need it replaced for about 10 more years.

Source: WikipediaFrom this initial list, eliminate cities that do not meet the following additional requirements.Minimize total capital required (to achieve financial freedom): To replace your current income, you'll need to buy multiple properties.

Replacement Cost:  the cost to rebuild the structure from the foundation up with the same kind and quality. 

The city gave me 3 options: 1) return the unit to a garage, 2) get an architect or draftsman to draw up the building plans and then pull permits, or 3) get a structural engineer to "stamp" it and say that it's up to code.

That you wisely build in the costs for replacement linens and towels (also offer black face towels), possibly don't use high-end top-down shades in the Bunk Room (although those black out shades match all the shades in the rest of the house and it's a high-end property), chalk can be brushed, semi-gloss on walls for easier clean-up... and yes, there are clear check-out directions to run the dishwasher provided via an online guest book, a physical guest book, and an email I send regarding check-out the day before they check-out.

Simply because there are more units and something like a basic roof replacement can be significantly more expensive as compared to a duplex.

You can get:-$10,000 per unit for mini-splits - $5,000 per unit for knob and tube removal - 75-100% off insulation- FREE light bulbs and light fixture- FREE thermostats- FREE Shower HeadsWe just got $20,000 for knob and tube removal at a 4 unit and $30,000 to replace this shared boiler at a 3 family we own.

In this instance, I chose not to include those since I replaced everything in the home, almost a gut out. 2.