No, it is not necessary, but it helps to include it.

Notice and acknowledgment of receipt of personal service are the methods you can use.

If I purchase a business 50/50 with a partner, but I pay for 100% of it for now, how can I ensure I get my 50% he owes me later?

You should address this in the operating agreement as you state, to be sure to protect your rights.

A co. wants to finance some equipment to me but they also will be getting their own loan for it. Can we have a valid contract?

It is hard to give you information just based on what you posted. A full consultation, including a review of the contracts involved, would be...

We entered into a contract in which the other party may be in breach as well as we too may be in breach

You haven't posted a question, however, if the party is in breach, you can sue for breach of contract.

How much construction liability does an investor have after the rehab/construction has been completed?

If your LLC was formed properly and has met corporate formalities, you should not have any personal liability. If you close down the LLC, it...

What kind of lawyer can help me with a pyramid scheme business

A business attorney can help. A full consultation would be necessary to properly advise you.

I am looking for attorney on contingency basis for a business case. The investment is around 50.000

We cannot solicit clients on here, but you can contact a business attorney directly.

Question on form CIV-100... where it says TO THE CLERK ... on the complaint filed on... (date)...

Put the date of the amended complaint.

I owe my ex-wife $30k in 18 months as part of divorce agreement. Can she place a lien on my house now when I am not in default?

If your wife has a judgment against you, then yes, a judgement lien can be filed against your house for the amount of the judgment.