If you’ve got property and aren’t well-versed in an accounting software I’d recommend starting with a good accountant and quickly adding a good bookkeeper.

In southern CA, even garage conversion ADU additions are typically costing more than the value added.  

Here is a list of why adding ADUs in my CA market is typically a poor RE investment:1) The value added by the ADU addition is often significantly less than the cost of adding the ADU.

By adding 3 million barrels a day by 2028, energy costs are likely to drop.

There is a single family home that was divided and one half has been rented and an ad on small "house" that has also been rented mostly long term.

Obviously none of they knew of the fire or looked at the property in the last few days.At tax sale I have seen people have bought:US Army bombing rangeExpired lease on propertyhouse with 3 walls, 4th wall missingsliver of land 2 feet wide50 foot cliff, access by helicopter onlyland at bottom of man made lake (literally underwater property)wetlandsflood plainsunbuildable propertyfailed perk testhistoric dig site, can't disturbproperty with no road frontagecondemned propertyproperty already scheduled for demolition soonformer gas station with leaking gas and oil tanks undergrounddry cleaning plant with toxic wasteSuper fund sitechromium factory with tanks and barrels of an unknown liquiddistillery with full barrells (ATF and state government was very interested and wanted to seize and destroy those barrells)Bigger Pockets Podcast #82 

Or you may find a D street in a B neighboorhood.

My company has gone through 3 dishwashers in the last 12 months and it has been an added expense.

Patio door prices can depend on the Model of Patio door you are looking for, for a standard 60x80 in white it will cost $1900.00 colors can be added, and for a patio door 72x80 the cost will be $2100.00 Outswing for a 60x80 will cost $2600.00 installed, and for an outswing 72x80 it will cost $2700.00 installed outswing with Grills for a 60x80 costs $1860.00, and an outswing 72x80 will cost $2300.00 installed.You also add blinds to all sliding and outswing patio doors for an additional charge.

Long term rental numbers are hard to get cash flow with added in reserves for maintenance, cap ex, and vacancy.