Resources for finding capex on a SFR rental?

[Jon Schwartz]

Hi everybody,

First off, let me thank you in advance if you reply to this post! BiggerPockets really has a great thing going: newbies ask questions, experienced investors provide answers, relationships are made, deals are done, everybody wins. Genius!

I've read about several methods for estimating capex, and my favorite is tallying the average annual cost of each capex line item by dividing its actual cost by its expected lifetime.

Like, it's a roof costs $5000 on average and lasts 20 years on average, then you should put aside $250/year (or $20.83/month) for the roof.

My question is: what's a good resource for finding the capex line item costs and lifetimes for a SFR rental? I'd love to find a recent list of all capex line items with average costs and lifetimes. Has someone seen that?

Thanks so much!

Jon