If I understand correctly, by locking the gate you would effectively deny your neighbors and their friends access. You cannot cut off their right of access.
Check what the rules or deed to the property says about the gate. If it does not say anything, try to reach an agreement with your neighbor. If the agreement works, talk to an attorney about recording it so that the same rule will apply to anyone who moves in.
Talk to the management and request self-closing hinges to be installed for the subject gate. TALK TO THE MANAGEMENT. Edward C. Ip www.lawyer4property.com
No attorney / client relationship established. The answr is for discussion and general information only. The lawyer had not reviewed any documents or contract prior to the above comments.
Almost for certain the Fire Department would have insisted on two accesses to the subject property as a condition to approving the construction. Even if the local community rules allow you to lock the gate, I think it would be in error and violate the Fire Department Regulations. Certainly check with the Fire Department.
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