When dealing with "small business" commercial lease agreements' typically the landlord will require the "personal guaranty" of the small business tenant. I have a personal guarantee in a commercial lease for my business (LLC) and I have defaulted and I need help to find.A personal guarantee means that the business owners or individuals who are acting as guarantors will be responsible for making the lease payments. Breaking a commercial lease is the same as breaking a contract. There will likely be penalties and consequences. If you agree to guarantee the lease, you not only assume responsibility for your child but for all the other renters in the unit as well. The general rule is that a personal guaranty is to be strictly construed and a "guarantor should not be bound beyond the express terms of his guarantee." A Personal Guaranty is a guarantee of term, meaning that it remains in effect for the full duration of the lease. If you have signed a personal guarantee for a lease or loan, then you have an existing creditor. Go Over Your Commercial Lease With an Attorney.