The 1031 exchange has helped many become rich, its a huge distortion in the real estate market.

NIMBY zoning rules. House prices are heavily driven by the lack of developable space in desirable areas, cities need greater density.

Please see my edit, you no longer must buy a new home for primary residence sale. I believe you used to have to buy another.

Also fun is with investment property you can 1031 exchange and avoid any amount of capital gains indefinitely.

Capital gains does not apply up to 500k if gain for a married couple to primary residence sales if a replacement home is purchased.

Edit: looks like you no longer must buy a new home, any primary residence sale is eligible if you lived in it for 2 years.

My apologies I was referring to NIMBY laws in general, the rapid rise in home prices can benefit existing owners when they sell and leave the area.

Existing home owners can win as well, especially if they desire to leave the desirable cities and move to more rural lower cost areas. Near where I live many retirees from middle class jobs in NYC move here and live like kings off pensions and the value their apartments sold for.

NIMBY are the largest issue in housing costs, the restrictive zoning hurts everyone long term.

Lots of things have changed with the homes, window and door builds, insulation, flooring materials, electrical systems, heating / cooling / hot water systems, appliances, framing systems in many homes, etc…

Often new things are invented with little benefit to gain, but when something offers great benefit they get adopted.

Not all land is worth the same, location location location.

The costs savings bring more profit not lower prices.

Those would be extension style springs then similar to OP, there are different layouts and sizes of spring. You should insider them for safety cables / ropes, they should go through the middle of the spring and be secured at both ends somewhere beyond the spring.

So in line with the tracks?

Are they above the door opening, parallel to the door?

Looking at your picture, when you replace them run a safety rope or cable through them. When extension springs break they can launch violently. Extension springs are safer for the installer but more dangerous in use if there’s no safety cable.

If you have extension springs as OP does they should have safety cables ran through them so they can not launch, if yours have no such cables add some ASAP

Roll up doors can use either type of spring, newer roll up doors which weigh more typically have torsion springs as they last longer and are considered safer during use, though more dangerous to instal.

I Have an original 1972 wood roll up with tension springs.