On redfin, I see lots of properties less than $1m near Boston center. A $1m home is $9k/mo at today's interest rates and considering repairs, insurance, etc., assuming 20% down.
$30k/mo income pre-tax or $360k/yr. Obviously not ideal, but a dual income family can afford this. My tech worker friends typically put more down 20% down (avoid jumbo loans), so their monthly could be much lower.