No but it would bug the crap out of me knowing I could buy one for $450 and pay a handyman $150 to put it in.

As far as positive ROI - I'd like feedback on the following items:-Switching to tankless hot water heater (current water heater doesn't look so hot)-Upgrading electric panel to a Span Smart Panel.

This will cover the unit’s condition, including plumbing, electrical systems, and any visible structural issues.

You might be able to erect a shed style place for that, but that's minus insulation, electric, plumbing, finishes, furnishing etc etc etc.. $3k is fantasy land. 

On one of my units the property has shared electric with another unit I own.

Only 10,000 are electric vehicles.EVs are only affordable with heavy subsidies, and even then there is good evidence that they cost more for the user, the environment, and society in general.Just wait until the electric grid collapses.

Regarding fire places, our friends that have older apartments with fire places are often filling the fireplace gap with electric LED "virtual fireplaces". 

After the cost segregation study was performed, this was the new asset allocation breakdown by useful life.Here are some examples of what types of assets are included in each of these asset classes.5 Year Useful LifeSpecialized equipmentCabinets and countersRefrigerators and microwavesSecurity alarm systems and telephone connectionsDecorative wall treatments, ceiling fans and flooring15 Year Useful LifeSidewalks, landscaping and asphalt pavingSignage and site lighting39 Year Useful LifeDoors, walls, roofing and windowsFlooring, drywall partitions and ceilingsEmergency lighting and restroom fixturesPlumbing, HVAC, and electrical distributionThe use of the accelerated depreciation strategy helps real estate investors to reduce the tax liability immediately which therefore increases their bottom line due to the offsetting of income.

You have $606 after tax dollars to spend on the rest of life's expenses, including investing, buying flowers for your significant other, cell phone bill, water/electric/vehicle expense/food/childcare/hair cuts/vacation. 

I asked the broker about the electrical and plumbing systems.