The gas bill will be obsolete come winter once everything is converted to electric.

We take properties from being obsolete to being functional and useful again.

It's a fantastic product, but water expense alone makes it as obsolete as the 18" broom closet we removed.

In SE PA, for example, pre-1950 homes often have plaster walls, lead pipes and obsolete wiring if they haven't been renovated. 

Newspapers are obsolete and I don't know if I'm just in such a rural area that people don't use the tech.

Piggy back on to developments that have a history of getting their way with state government..More immune  elitism and to politics, we have our fantastic and forgiving inner city tearing down old obsolete junk and then building new with all the endless benefits and services of higher density urban life. 

What you will find is that using this rule of thumb will generally chase you to tertiary markets and/or functionally obsolete buildings.

The appraiser may call this functionally obsolete and deduct for the impairment.

As a Property Manager I don't want to make my position obsolete but assigning the best applicant to handle some Mngt duties for a discount rent might just give you eyes and ears on your property.

So it seems to me that buyers agents are, for lack of a better word, obsolete.