Notice to Seller to Perform
Most of the attention in a California transaction goes to what happens when a buyer misses a deadline. Less gets said about what happens when the seller is the one who drops the ball, but it happens, and when it does, the buyer has a specific tool for it: the Notice to Seller to Perform, or NSP. It's the mirror image of the more commonly discussed Notice to Buyer to Perform, and it protects buyers the same way that form protects sellers.
Why This Document Matters
The purchase agreement obligates the seller to deliver certain things on time. Disclosures. A preliminary title report. A pest inspection report if one was negotiated. If the seller falls behind, the buyer isn't left guessing about what to do. The NSP gives the buyer a formal, written way to put the seller on the clock.
Without the NSP, a buyer who simply gets tired of waiting and tries to cancel is on shaky ground. California purchase agreements generally require this kind of written notice before a party can exercise a cancellation right based on the other side's non-performance. Skip the notice, and a seller can later argue the buyer never gave them a fair chance to cure the problem. The NSP is what closes that gap.
How It Works
When a seller hasn't delivered something required under the contract, the buyer's agent prepares the NSP identifying exactly what's outstanding and references the specific paragraph of the purchase agreement that requires it. The notice gets delivered to the seller, and from that point, the seller generally has 2 days by default to perform, though the parties can agree to a different timeframe in the contract.
If the seller delivers what's owed within that window, the transaction continues normally. If the seller still hasn't performed once the notice period expires, the buyer gains the contractual right to cancel. That right doesn't trigger automatically, though. The buyer still has to follow through with a signed Cancellation of Contract to actually end the transaction and release the deposit.
Key Sections Explained
Reference to the Governing Agreement: The NSP identifies which purchase agreement it applies to, along with the property address and the date the agreement was signed. This ties the notice directly to the specific transaction and contract terms in play.
Specific Items or Actions Outstanding: This is the operative section. It lists exactly what the seller hasn't delivered or hasn't done, referencing the applicable paragraph numbers from the purchase agreement. Vague language here weakens the notice considerably.
Notice Period: By default this is 2 days after delivery, though the underlying agreement can specify a different period. The notice period cannot be shorter than whatever timeframe was already agreed to in the contract for that particular obligation.
Confirmation of Receipt: Documentation that the notice was actually delivered to the seller matters, since the clock starts running from delivery, not from when the buyer decided to send it.
Common Mistakes to Avoid
Sending the NSP without specific paragraph references is one of the more common issues. Simply stating that the seller "hasn't done what they're supposed to" doesn't give the seller a clear, actionable notice, and it weakens the buyer's position if a dispute follows.
Assuming the contract cancels automatically once the notice period expires trips people up regularly. It doesn't. The buyer gains the right to cancel, but has to actually exercise that right with a signed Cancellation of Contract. Sitting on that right without formally canceling can create ambiguity about where the transaction actually stands.
Sending the notice too early is a real risk. An NSP delivered before the seller's deadline has actually passed isn't valid, and jumping the gun can undermine the notice if the seller later performs within their originally agreed timeframe.
Not counting the notice period correctly causes confusion. The default is calendar days, not business days, and if the last day falls on a weekend or holiday, the deadline generally still applies unless the parties have agreed otherwise.
Pro Tips from a TC
Track every seller obligation in the contract the same way you'd track a buyer's contingency deadlines. If disclosures or reports are running late, don't wait until it becomes a crisis. A quick, professional heads-up to the listing agent before you send a formal NSP often resolves things faster and preserves the working relationship.
When you do send an NSP, be precise. Reference the exact paragraph, state exactly what's missing, and keep a record of delivery. This is exactly the kind of detail that deadline management support is built to catch before it becomes a bigger problem.
If the notice period expires and the seller still hasn't performed, don't let the file sit in limbo. Talk to your buyer promptly about whether they want to exercise their cancellation right or extend the timeline instead. Ambiguity at this stage benefits no one.
Related Documents
- Notice to Buyer to Perform (NBP), the seller's version of this same notice
- Cancellation of Contract (CC), the follow-on form needed to actually cancel once the notice period expires
- California Residential Purchase Agreement, the contract establishing the deadlines an NSP enforces
- Extension of Time Addendum, an alternative to an NSP when both sides agree to more time instead
- All Documents
Frequently Asked Questions
Q: Does a buyer have to send an NSP before canceling over a seller's non-performance?
In most cases, yes. If the buyer wants to cancel because the seller failed to perform, written notice is generally required first under the purchase agreement. Without it, the seller could argue the buyer never gave them a fair opportunity to cure the issue, which can complicate the buyer's position if the cancellation and deposit release are later disputed.
Q: How much time does the NSP give the seller to act?
The default is 2 calendar days after delivery, the same period used for the Notice to Buyer to Perform. The parties can agree to a longer or shorter period, and that agreed period would already need to be reflected in the contract terms rather than added unilaterally in the notice itself.
Q: What happens if the seller still doesn't perform after the notice period ends?
The buyer gains the contractual right to cancel the agreement, but the contract doesn't cancel automatically. The buyer needs to follow up with a signed Cancellation of Contract to formally end the transaction and start the process of releasing the earnest money deposit.
Keeping track of seller-side obligations is just as important as tracking buyer contingencies, and it's easy for it to get less attention since most training focuses on the buyer's timeline. If you want a second set of eyes on every deadline in your file, regardless of which side of the transaction it belongs to, that's the kind of coordination Relaxed Agent provides as a California virtual TC service.
Learn About Other Documents
Buyer Inspection Advisory
A comprehensive advisory listing the various inspections and investigations a buyer should consider conducting during the inspection period.
California Residential Purchase Agreement
The primary contract for purchasing residential real estate in California, containing all terms, conditions, contingencies, and timelines for the transaction.
Statewide Buyer and Seller Advisory
A comprehensive advisory document covering numerous topics buyers and sellers should investigate, from property conditions to neighborhood issues to legal considerations.


















