Also known as: integration clause · integration-clause · integration-clauses · merger clause · merger clauses · entire agreement clause
Written by attorneys · grounded in primary & secondary sources — see below
A contractual provision declaring that the writing constitutes the parties' complete and final agreement. The clause manifests intent to merge all prior negotiations into the document and bars later claims based on extrinsic evidence that would add to or contradict its terms.
North Ridge Wireless contracted to buy a rural parcel from Olivia Lane. The purchase agreement contained a merger clause declaring it the entire deal. Lane's agent had texted during talks that he would arrange a permanent access road, but the deed delivered at closing conveyed only the hilltop without any easement. After closing North Ridge sued to enforce the road promise, yet the court refused because the integration clause and deed merger cut off the earlier text.
Nanakuli Paving ordered asphalt from Shell Oil under a long-term supply contract that contained an integration clause. The writing set a fixed quantity, but Nanakuli offered evidence of trade usage and prior dealings showing that quantity terms were understood as mere projections adjustable to market conditions. The court admitted the extrinsic evidence because it could be construed as consistent with the written term rather than contradictory.
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Stambovsky agreed to buy a house from Ackley after viewing marketing materials that never mentioned the property's reputation for poltergeists. The purchase contract included an integration clause stating it was the complete agreement. After closing Stambovsky discovered the reputation and sought rescission, but the court examined whether the clause and deed merger prevented reliance on the omitted information.
An integration clause signals that the writing is the complete agreement, triggering the parol evidence rule to bar prior terms that would add to or contradict the document. Courts still admit evidence of fraud, mistake, or truly collateral agreements that the parties did not intend to merge.
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The clause first prevents enforcement of prior negotiations against the written contract. After closing, the separate merger doctrine discharges contract promises not restated in the deed, so the buyer must look only to the deed unless an exception such as fraud applies.
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Standard integration language generally bars contradictory prior agreements but does not automatically exclude consistent evidence of usage or dealing offered only to explain or supplement the writing under the UCC or Restatement approach.
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…it ( Danann Realty Corp. v. Harris , 5 NY2d 317, 322; Tahini Invs. v. Bobrowsky , supra). Moreover, a fair reading of the merger clause reveals that it expressly disclaims only representations made with respect to the physical condition of the premises and merely makes general reference to representations concerning "any…