Can a landscape company file a lien in california?

No, a landscape maintenance company that does gardening-type work cannot lien your property.

When did he last do work on your property? Did 90 days elapse from him completing work until when he recorded his lien?

Can licensed contractor sue/recover payments after finding out later that subcontractor lied and was not licensed?

Yes, contractor can sue its subcontractor for disgorgement. (Business and Professions Code section 7031)

Did the subcontractor provide you with a preliminary notice?

Am I supposed to file a design professional lien, or mechanic's lien, or both?

It is a design professional’s lien if construction did not commence. You must have provided services pursuant to a written contract with the...

What recourse do I have against a contractor who signed off on completed contracted work, and then filed two false liens?

We will need more information about what you mean by “signed off completely.” If the contractor has been paid in full and you can establish that,...

How do I get a company to remove a lien?

Your summary is quite astonishing. There are many issues here, but as far as the lien itself, there may be various ways to challenge it. One of...

Contractor sent Preliminary Notice AFTER 20 days of finishing work. What we can do to prevent a lien filing given he filed late

As usual, Ms. Curl offers up some wonderful advice. Spot on here.

I need a construction attorney

Good news that the unlicensed contractor may have assets to satisfy your claim. I suggest you retain a construction lawyer that knows the ins and...

What options do I have for recouping costs for a general contractor that ordered equipment and failed to pay?

It is unlikely that you will be able to properly maintain a mechanics lien against the property since the equipment was not furnished and installed...