Roof costs say $8000 (depending on size, shape, type of shingles, etc.) and last 25 years (depending on weather, type of shingles, slope, etc.) ... that's $27/mo you need to put away in CapEx to eventually replace the roof ... now do that for all the systems in the property, add them all up, add some reasonable amount of margin, and you have a reasonable grass roots estimate of what your CapEx should be ... code it into excel with the approriate parameters such as square footage, number of water heaters, etc. and you can knock out a CapEx estimate for a specific property in a matter of minutes, without messing around with bogus rules of thumb like 50% rule or 10% of gross rent, or any other such thing that tries to relate things that are completely unrelated in order to shortcut around actual thought and analysis.Any calculator that you do not understand all of the inputs, outputs and assumptions that went into them are less than useless, and BPs are no exception ... therefore the best ones will be the ones you build yourself from the ground up and modify over time as you gain experience and find that some of your assumptions, inputs, and formulas need tweaking.  

If you can knock out some exterior upgrades prior to the rental increases that will go a long way to goodwill.

I knock out 4 hours early in the morning and spend the rest of my day as an agent or working on investment property.

We could knock out two birds with one stone and visit family that live along I 80 in Nebraska.  

I had to give one of my units a full facelift and knock out a wall to get the rent to the proper place, but there were tenants in there at below-market rent I had to be patient with first, and it took me a year to do that. 

I really don't want to send them anything less than an incredible organization as a referral, so if you got any knockouts, send them my way! 

You gain the efficiencies of scale when you address the items as a block and you can knock out a bunch of them at a time. 

My realtor/property manager already had a team in place to knock out most of the list within the first week!

very impressive, Did you knock out external walls to add your extra bed and bath or did you just re-work the existing footprint? 

@Karam A Tascoe Huge congrats on to you on your knockout deal!!