& different parts of the asset can be depreciated on different schedules.To find out the useful lifespan of each component, you do a cost segregation study to analyze all of the parts.The raw land can't be depreciated so you start by giving that a value first.But other items can be depreciated on a quicker timeline.A roof, road, sidewalk, fencing, walls, gates, doors, latches, flooring, air conditioners, pavers, curbing, landscaping, etc.The IRS has a depreciation schedule for each type.Some parts are 5 yrs.

Do you have any links on how long water softeners are expected to increase the lifespan of various components?

Based in New York, my work-life spans across New York City and Long Island while I reside in Mount Vernon, Westchester County.I’m diving deep into real estate investing, working on building my knowledge first and my portfolio later.

The average lifespan of a company is ten years, and an S&P 500 company only has an average lifespan of 18 years.

However, you can choose to do a Cost Segregation Study and instead of depreciating the property as a whole you depreciate each piece of the property some of which have a shorter lifespan and that allows you LARGER deductions sooner!

Per this NY Times article, the average American knows around 600 people.https://www.nytimes.com/2013/02/19/science/the-average-american-knows-how-many-people.html#:~:text=The%20average%20American%20knows%20about,do%20you%20know%20named%20Kevin%3FPer the US Census Bureau, the average American moves 11.7 time in their life, which based upon an approximate lifespan of 84 years, works out to be about every 7 years.https://www.census.gov/topics/population/migration/guidance/calculating-migration-expectancy.html#:~:text=Using%202007%20ACS%20data%2C%20it,one%20move%20per%20single%20yearSo, if the average American knows 600 people and they each move about every 7 years, that means that the average American knows around 85 people that move in any given year.How many of those moves do you want to be involved in?

Even if everything is new, their lifespan has started.  

The land represents ~1% of the purchaseOn the contrary - if you purchase a $2 MM shack in manhattan on a postage stamp lot, the land could represent 99%Lever 2 - % of the property with a shorter useful life.Not all parts of a piece of real estate are depreciated at the same speed.Certain personal property assets have SHORTER lifespans in the eyes of the IRS vs the standard 27.5/39 year livesProperties with tons of this often have:- Over-developed land sites (hardscaping, pools, retaining walls)- Fancy Fixtures- Fancy Furniture (STRs!)

It’s definitely helpful to know about the variability in unit lifespan and potential issues with repairs.

In the lifespan of your investing if you continue investing this speed bump will become smaller to you.