This kind of letter is also called a “Proof of Residency Letter” or also a “Affidavit of Residency”, which is a letter to proof your residency. A Proof of residency can be required in several occasions, to register for state or national programs, visas, schools, etc, and can be written also on behalf of somebody else (e.g. you Landlord).
Stating that somebody lives with you requires also to disclose personal information, like your full name, address and the length of residency (at that address), the contract to purchase the property or even the lease agreement. While a simple utility bill (water, electricity, etc.) with your name on it could be enough in some occasion, the signature/reference of the landlord or of a notary public (e.g. lawyer) could be required in most complex situations.
Here below you will find a 2 specific examples on how to write your Proof of Residency Letter:
=== Example n. 1 (Writing on behalf of somebody else) ===
Date: 01/02/2019
Subject: Proof of Residency Letter
Dear Mr. John (or preferably “To Whom This May Concern…”)
I am writing on behalf of my colleague/friend/spouse/son/, (enter his full name)________, regarding his residency during the timeframe of (starting date)____ 2018 until (ending date)______ 2019.
He resided with my family at (full address) ___________, New York, USA 10100.
During this time, (his full name)________ assisted me/my family with payments regarding rent, food and utilities.
If there is any other question, please contact me at (phone number)_________
Kind Regards,
Robert Weber (signature)____________________
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=== Example n.2 (Landlord Proof of Recidency Letter) ===
Date: : 01/02/2019
Subject: Proof of Residency Letter from the Landlord
Dear {Ms/Mrs./Mr. Joe}:
My name is {Landlord’s Full Name} and I am the actual landlord of {House/Apt. number}, located at {Full Address}.
I am writing to you this letter as proof of one of my tenant’s residency: Mr/Ms/Mrs {Your Tenant’s Full Name}. He/She has been living at this residence in {House/Apt. Number – Full Address} since {Starting date) paying a monthly rent of $_____ per month.
For any other question, please feel free to contact me by post mail or calling my personal Phone Number_____________
Kind regards,
{Landlord Signature}
{Your Full Name}
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IMPORTANT: Please remember that, when you State the length of time you’ve resided at the property, you need to be as precise as possible giving the exact day, month and year. If required remember to include also the names of all the other people living with you.