We rent a 4/2.5 in south Carlsbad for $2,100. We pay 6-12 months in advance, though and volunteer to help with some maintenance & repairs (they have never asked).
Other people in our neighborhood are renting the same floorplan for under $2,000. It really does depend on the LL and whether or not they are paid-off or mortgaged, smart or stupid.
A smart, experienced LL values stable, dependable, clean, long-term tenants over getting the highest rent. It might be a good idea to really screen & look for an elderly LL who owns the house outright & just wants rent money for retirement income/supplement. They want no hassles & if you suggest paying up-front & multi-year lease, you should be able to get a very good deal (consult an attorney about lease agreement & possible escrow acct).
Your negotiation strenght depends on:
1. credit score
2. referrences
3. income/work history
4. (possible) willingness to lease long-term (2-3 yrs+) and any other incentives (offer to do some repairs up to a certain amount, pre-paid rent, etc.)