The town where properties moved the fastest was Welwyn Garden City.
Apparently there are 10,613 streets where properties have an average value of more than a £1m.
On the rare occasions where properties in the protected central zone change hands – less than a tenth are privately owned – they sell for huge sums.
"It's the duty of websites where properties are advertised to show some due diligence in establishing that a property is valid".
That's especially true in a buyer's market, he said, where properties spend longer on the market and sell for lower prices.
The first one comes in September where properties are sold at a starting bid of the total amount of taxes and liens owed.
Estate agents talk enthusiastically about "PCL" – prime central London – those parts of the capital where properties normally sell for more than £1m.
The petrol bomb attack is the latest in a string of incidents where properties belonging to the Quinn family were damaged.
These districts include Edgbaston, where properties have reached the £3 million mark; Harborne; and Moseley, with its selection of period houses.
He said the scope of the problem was unclear because the environmental issues rarely resonated beyond the specific communities where properties were located.
But some houses can be more expensive — up to $700,000, Ms. Gibbons said, citing the Royal Ranch area, where properties come on the market infrequently.
