SFHs in MM is quickly running away from first time home buyers, at $1M house with 20% down, or $800k loan at 4%, the monthly mortgage is $3,800 per month, plus property taxes + prop insurance, we are looking at a fixed overhead cost of $5,000 per month, before even turning on lights, internet, gas and water.
In short, $5,000 housing cost commitment is probably in the dual income territory, one person pulling in $150k job, another making a more modest $75k or so.
SDrealtor, what is the social economic profile of your buyers in MM (and Kearny Mesa, Clairemont), if you can share such high level details.