Addendum to Purchase Agreement (Universal) — Oklahoma Edition Template

Deals change after signing — repair credits get negotiated after inspection, closing dates slip, appraisal gaps get bridged, personal property gets added or removed. The clean, enforceable way to document any of it is a written addendum executed by all parties, because nearly every purchase agreement contains an integration/merger clause providing that modifications must be in writing, and the statute of frauds in every state requires material modifications to real estate contracts to be written anyway.

This Universal Addendum to Purchase Agreement is deliberately flexible: it identifies the underlying contract by parties, property, and effective date; provides numbered blank provisions for the new or modified terms; states that all other terms of the purchase agreement remain in full force and effect; handles conflicts between the addendum and the original agreement (addendum controls); and includes execution blocks for all buyers and sellers with dates. It is the form you reach for dozens of times a year.

The 3-page template also ships with a drafting guide containing ready-to-adapt clause language for the most common addendum scenarios: inspection repair resolutions, closing date extensions, appraisal gap provisions, seller concessions and credits (with a note on lender concession caps), personal property inclusions, post-closing occupancy stubs, and contingency waivers. The 50-state notes flag jurisdictions with specific counterpart-execution or electronic signature nuances (all states have adopted UETA or equivalent, and federal E-SIGN, 15 U.S.C. § 7001, validates electronic signatures, but practice details vary). Template for drafting purposes — review significant modifications with a broker or attorney.

About this Oklahoma Edition: Every template was redrafted around the Oklahoma Broker Relationships Act (59 O.S. § 858-351 et seq.), which abolished common-law agency in real estate brokerage — an Oklahoma broker owes statutory duties to the party it is assisting rather than fiduciary agency duties, and dual agency does not exist. The dual-agency file in this set is therefore an Oklahoma Broker Relationships Act disclosure and consent for a single broker providing brokerage services to both parties, with the statutory duties and confidentiality rules spelled out. The seller disclosure edition tracks the Oklahoma Residential Property Condition Disclosure Act (60 O.S. § 831 et seq.) and its disclosure and disclaimer statement regime, the listing and buyer-broker agreements carry the written-agreement requirements enforced by the Oklahoma Real Estate Commission, the independent-contractor agreement reflects associate-to-broker affiliation under the Oklahoma Real Estate License Code, and each instrument recites the Oklahoma Uniform Electronic Transactions Act and the Oklahoma statute of frauds (15 O.S. § 136). Oklahoma has no broker commission lien statute for residential sales, so the disbursement authorization is drafted as a contractual closing-agent instruction. Not legal advice; have an Oklahoma-licensed attorney review before use.