For newly constructed, purchased or renovated properties and also retroactive generally over the last 10 years, building components are properly classified into individual units of property and accurate recovery periods for computing depreciation deductions.

All of the components of construction, I left off land.  

Regardless of how real estate -ish we are here, there is a huuuuge technology component here, too.

The categories match up pretty well with the 25 components I call out in my Estimating Rehabs books.Btw, this is the way my accountant recommended I set up QB...he's the one who moves everything to WIP at the end of the year for the properties that haven't yet sold. 

Boxabl acknowledges SEC inquiry in updated filing | Business Insider India its a double whammy start up and trying to sell in a very tough interest rate environment. along with inflation and cost of components to the point their 50k to 60k box probably cost them quite a bit more to produce than what they were going to sell it for. 

They are often classified as operating expenses or maintenance expenses rather than capital improvements (assets).Washer/Dryer/Stove/Refrigerator: These are assets as they are considered durable goods that will benefit the property over an extended period.New Baseboards/Trim, Doors: These are generally considered assets because they enhance the property's value and are not typically replaced frequently.Furnace/AC: These are significant components of the property and are categorized as assets due to their long-term benefit.Paint, Light Fixtures: These can be a bit nuanced.

I was just into about my 20th new build in a 90 home project when this happened to us.. lumber packages did not quite 3X but they certianly went up 2X along with a host of other components.. the one benefit we had was we could have lumber escalation clauses in our contracts that passed this on to the buyer..

They can buy property any way they want, including with cash, but the low interest rate mortgage on their reasonably lightly levered acquisition is an attractive component of the deal.

The other component to this is people continue the "contact the SEC with a tip".

Find the age of every main component.