What you describe is the same bad practice, if it doesn't conform to code.

Once it gets wet, it conforms to the ground and you'll never know its there.

Another covenant not with title: The property shall conform to all applicable zoning and building regulations imposed by proper jurisdictions at the time of settlement as a residential property.What happens if the seller backs out, any remedies?

A real estate agent that I work with told me about a area of Menifee, Ca just north of Temecula in this are there is many non conforming properties.  

In which case it would be stupid to lose out on 5 figure profits to conform to a rule of thumb.However that does not show the 65/70% "rule" is a myth.  

to manipulate statistics to conform to any general given hypothesis.

The inability to conform is almost getting to the definition of crazy. :)

Page 50: All non-US citizens, illegal or not, will be provided with free healthcare services.Page 58: Every person will be issued a National ID Health card.Page 59: The federal government will have direct, real-time access to all individual bank accounts for electronic funds transfer.Page 65: Taxpayers will subsidize all union retiree and community organizer health plans (read: SEIU, UAW and ACORN)Page 72: All private healthcare plans must conform to government rules to participate in a Healthcare Exchange.Page 84: All private healthcare plans must participate in the Healthcare Exchange (i.e., total government control of private plans)Page 91: Government mandates linguistic infrastructure for services; translation: illegal aliensPage 95: The Government will pay ACORN and AmeriCorps to sign up individuals for Government-run Health Care plan.Page 102: Those eligible for Medicaid will be automatically enrolled: you have no choice in the matter.Page 124: No company can sue the government for price-fixing.

Many people prefer intelligent design because they have a mythical belief, and want the world to conform to their mythology.

James 1:27Main Entry: re·li·gion Pronunciation: \ri-ˈli-jən\Function: nounEtymology: Middle English religioun, from Anglo-French religiun, Latin religion-, religio supernatural constraint, sanction, religious practice, perhaps from religare to restrain, tie back — more at relyDate: 13th century1 a : the state of a religious b (1) : the service and worship of God or the supernatural (2) : commitment or devotion to religious faith or observance2 : a personal set or institutionalized system of religious attitudes, beliefs, and practices3 archaic : scrupulous conformity : conscientiousness4 : a cause, principle, or system of beliefs held to with ardor and faith— re·li·gion·less adjectiveSpirituality, on the other hand, is debatable mainly because it is made up of our values system and our relationship with our "significant higher power".