When I graduated from High School in 1965:
http://www.thepeoplehistory.com/1965.html
Average Cost of new house $13,600.00
Average Income per year $6,450.00
Gas per Gallon 31 cents
Average Cost of a new car $2,650.00
Loaf of bread 21 cents
Average Rent per month $118.00
1965
USMC Pvt made $88/month.
USMC 2nd Lt made $295/month.
2012
USMC Pvt made $1379/month.
USMC 2nd Lt made $2828/month.
In 2011:
Average Cost of New House $262,260.00
Cost of a gallon of Gas $3.52
US Postage Stamp 44 cents
Gallon of Milk $3.39
Move Ticket $8.20
Price Of Gold Per Ounce ( August 2011 ) $1,677.95
Average Yearly Wages $40,925.00
Just to show how generous the government is, consider this. When I was in second grade in 1953, we were encouraged to bring in a dime every week to put toward buying a $25 US Savings Bond for a cost of $18.75. Today, that Series E bond would be worth $166.43!
http://www.treasurydirect.gov/BC/SBCPrice
An inflation calculator shows that $18.75 in 1953 is worth $162.44 today.
http://www.usinflationcalculator.com/
So, by prudently investing in US Savings Bonds when I started grammar school, for each investment of $18.75 I would have earned $3.99, total, over the course of 59 years!
What a way to plan for your retirement!
I'd say the cost of a house you listed in 1965 is right on, we bought our first house in ‘65 for #13,900.