Through the years there were several major items that needed to be fix, HVAC, water heater, and some minor items.

Nevertheless, I'd like to have a reasonably reliable formula that I can use for (my analysis spreadsheet generally and) a property that I have that has a lot of deferred maintenance (short of doing a full itemized analysis).  

I have a diverse background in real estate, having served as a commercial acquisitions analyst, constructor, investor, and professional real estate copywriter.

Don’t skimp on cheap items like decent fixtures, etc.

Figure that is your DP, closing costs, rehab, and all the other cash items that happen upfront. 

You get the lifespan and calculate how much you need to save for each item.

You will be high with some and low with other items, overall you'll be in the ballpark.

@Daniel Gibson @Bruce Woodruffthere is an active leak, which is the most concerning item.

This allows us to know approximately what we’ll spend during the renovation/furnishing stage after we acquire the property.BudgetWe go through our list of renovations & label each item as essential or nice to have.

If they ask for details just be clear on what each line item is, including the cushion.3.