From what I hear, it is worse at the top of the market.
So the palaces owned by oligarchs, and London homes owned by international traders and bonus-bankers will be slack, because they may need to move to an EU financial centre if UK resigns. I also sense a reduction in tolerance to tax-dodging billionaires, who may be made to feel less welcome.
It will ripple down to the layer below the cream, and to business owners who may be affected by the downturn in trade, because, so far, nobody knows how big it will be or how long it will last. This is not a good time to take out a big mortgage, as interest rates are only going to go one way. However, if you can keep up the payments, the probable rise in inflation will erode the value of your debt.
For the moment, nobody knows how they might be affected, so it is normal to put off making a decision in case you end up regretting it later. Those who make a bold move and find events turn out right for them will be very pleased.
A vote to resign from the EU will mean that uncertainty persists for some years, until a new order can be established.