The real estate information website recently calculated the cost to the buyer. Their research is detailed in "The Real Costs of Rising Interest Rates for Homebuyers."
Zillow’s calculations of the potential costs of waiting a year to buy a home:
San Jose, Calif.: $710 a month
San Francisco: $556 a month
Los Angeles: $478 a month
San Diego: $353 a month
Riverside, Calif.: $315 a month
Seattle: $299 a month
Sacramento, Calif.: $252 a month
New York: $201 a month
Boston: $198 a month
Portland, Ore.: $189 a month
Washington, D.C.: $186 a month
Las Vegas: $176 a month
Phoenix: $147 a month
Denver: $135 a month
Miami-Ft. Lauderdale: $129 a month
Orlando, Fla.: $128 a month
Atlanta: $118 a month
Tampa: $110 a month
Baltimore: $108 a month
Austin: $104 a month