Thank you for your question. I look forward to working with you to provide you the information you are seeking for educational purposes only.
I am afraid that in all states, except for some very rare cases where the heirs can prove the original was destroyed by fire or flood etc, an original will is required for probate. If you cannot find any original will, then you would have to open probate under the intestate laws in the state where your brother resided at the time of his death and you would have to seek to be named administrator. If his total estate assets are less than $20,000 and this was in Nevada as you state, then you could do a small estate probate by filing an affidavit and getting letters of administration of the estate to handle all of his affairs. If the estate total value is worth more than that you have to file a petition for intestate probate and get the court to name you administrator for the estate.
Under intestate succession rules in NV, if there was a surviving spouse and children, they are the first in line as heirs. Absent spouse, children, grandchildren, next in line are parents and absent parents then siblings as heirs of his estate (if anything is left after paying his bills).
If you want to probate this is what you need to do and you should get a local NV probate attorney to file if you have to do more than small estate affidavits. Your other choice if there really is nothing in the estate but bills is as you stated, just walk away and let the creditors fight over the property and tell them the estate is insolvent. But you should have a local probate attorney just review the estate first before making that decision, because they may find something for you that would be worth it to you to probate the estate.
I truly aim to please you as a customer, but please keep in mind that I do not know what you already know or don't know, or with what you need help, unless you tell me. Please consider that I am answering the question or question that is posed in your posting based upon my reading of your post and sometimes misunderstandings can occur. If I did not answer the question you thought you were asking, please respond with the specific question you wanted answered.
Kindly remember the ONLY WAY experts receive any credit at all for spending time with customers is if you click on OK, GOOD or EXCELLENT SERVICE even though you have made a deposit or are a subscription customer. YOU MUST COMPLETE THE RATING FOR THE EXPERT TO RECEIVE ANY CREDIT, if not the site keeps your money on deposit.
Also remember, sometimes the law does not support what we want it to support, but that is not the fault of the person answering the question, so please be courteous.
This is NOT the practice of law nor is it legal advice to you, it is merely educational information for you to use to seek out a licensed attorney in your state to get actual legal advice from them. Please use sites such as http://www.martindale.com or http://www.lexmundi.com or http://www.hg.org to find a local attorney to get actual legal advice in all matters.