Your lease controls (unless it's a code violation), but if your landlord says don't do it, lease or no, then you had better be prepared to spend a...

I would agree with much of what my colleuages say; but note that if your father lives in the home, he likely enjoys homestead protection. gsg

Unlawful detainer vs Ejectment?

Yes; consult a good local real estate litigator. Your first sentence likely says it all: "I entered in a agreement to SELL real estate" - that...

Is it legal for the seller to hide a "KNOWN SUBSTANTIAL MATERIAL DEFECT" in the underground piping for the built in pool?

It would depend to some extent on how long the seller lived in the home, but to answer your question YES. A substantial leak in a pool would be...

This is a question for the real estate negotiate you (smartly) retained to assist you in the sale. Hope this helps. gsg

Can a landlord overcharge for carpet cleaning fees?

If you agreed to pay the $150 in your lease, it's likely enforceable. Hope this helps, even though I'm sure it's not what you wanted to hear....

How to deal with past landlord who is imposing claim on security deposit and seeking additional money?

Pretty simple; either pay the money they demand (they will likely add attorneys fees and costs to that), negotiate them down, claiming waiver, or...

Can I file a small claim case?

It would likely cost you far more in legal fees and costs than you could hope to recover, so it would not be cost effective - unless you can get a...

Can an apartment complex deny you for being on another lease, if you have good rental history with the current leasing agent?

I agree with my colleague; yes they can. Hope this helps. gsg

What are my rights as far as "habitability" and "quiet enjoyment" when my landlord is renovating the apartment I live in?

This depends to some extent on the terms of your leae, but unless you agree to allow this, it is a solid reason to terminate your lease, and sue...