Legal analysis: the unilateral undertaking is only a credit act or an offer act, which focuses on the conscious performance and practice of the promisor. If the letter of commitment involves the contents of real estate, relevant certificates, such as real estate license, should be handled by both parties at the local notary office.

If there is no legal basis to enforce the performance of the promised behavior, the notary office will not accept its notarization application. As for the undertaking to give up property ownership or inheritance, when notarizing other legal acts, the notary office can only serve as evidence or basis for acceptance, but notarizing the effectiveness of the undertaking is not a legal act.

Legal basis: Article 25 of the Notary Law of People's Republic of China (PRC). If a natural person, legal person or other organization applies for notarization, it may submit it to the notary office of its domicile, habitual residence, place of behavior or place where the fact occurred.

To apply for notarization involving real estate, one shall apply to the notary office where the real estate is located for entrustment, declaration, gift and notarization of wills involving real estate, and the provisions of the preceding paragraph may be applied.