Spiritual zoning and market value
What makes property valuable? As this curious but illuminating Boston Globe story reports, it may be something of value only to a particular submarket:
What makes one side of the street worth $25,000 more than the other? The answer tells us something profound about markets and pricing:
In a convergence of real estate and religion, home values in
‘‘If we want to walk to synagogue or to a friend’s home, the eruv is crucial,’’ said Howard Goldfischer of
The theory behind the eruv, drawn from legal principles in the Talmud, or the codes of Jewish law, is that the poles and wires that surround it form abstract doorways to the outside world. Everything inside the eruv is considered an extension of the home, where carrying items on the Sabbath is permissible. In a sense, the eruv is a big backyard. The word ”eruv” means ”to mix” or ”to join together.”
The eruv is defined by a subgroup of the market, for a subgroup of the market:
In Sharon, the eruv is operated by the Sharon Eruv Society, a nonprofit organization whose members each week walk its boundaries to make sure strings are secure and telephone pole wires unobstructed. The society collects voluntary annual dues for upkeep from those living within the eruv.
The eruv, which is intrinsically religious, is almost entirely symbolic, with the wider market largely oblivious to its presence. (Trouble could arise if the boundaries were not entirely symbolic, or if the space sought to secede from the civil laws of the wider community.)
In
However ecumenical, however symbolic, the eruv has tangible consequences in real estate terms — it changes market price. In this it is not unique: I remember reviewing the appraisals for a very large affordable apartment complex in Williamsburg, a Brooklyn neighborhood that is the headquarters location of the Lubavitcher rebbe, a particular Jewish sect.

Bridge for sale!
In that case, close proximity to the rebbe was a clear locational premium that reflected in higher rents, and in
But in a heated real estate market, the eruv is a pocket-buster for some, adding as much as 10 percent to the price of a home, according to realtors, particularly if the home is close to the synagogue.
The premium arises partly because the supply is constrained. In effect, the eruv designation is an unusual and private form of zoning (more on zoning here and here) that adds value because it is restricted:
Iris Blitstein, a
”You make a sacrifice for what’s important,” she said. ”As an Orthodox Jew, you know you are going to pay the price.”
What, the firmly secular reader may wonder, does this have to do with affordable housing? Simply this — symbolic considerations can drive subgroups, and subgroups can drive market value. Indeed, the definition of fair market value, drilled into every appraiser and set forth at the beginning of every appraisal, is:
Fair Market Value
The highest price, in terms of cash, between independent parties dealing at arm’s-length, both fully informed and neither under any undue compulsion to act.
Inherent in this definition is highest – and when a subgroup of consumers values something more than others do, up goes its price.
Here then is the paradox of markets. Though one swallow does not make a summer, and one buyer does not make a market, the market is made by less than all the buyers. Somewhere between one and everyone, the mass of buyers assumes criticality and becomes the market-defining behavior.
But how many? That’s still a conundrum.
How many horses does a market require?