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Create a professional Purchase Agreement Addendum with our free online generator. Modify, supplement, or clarify terms in an existing purchase agreement without creating an entirely new contract. Add contingencies, extend deadlines, adjust the purchase price, modify inspection terms, or include additional provisions agreed upon by both parties. Both buyer and seller must sign the addendum for it to be effective. Preview in real time and download as PDF or Word. Electronic signature support included. Suitable for real estate, vehicle, and business purchase transactions across all 50 US states.

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