How to use the N254 builder
- Enter the claim. Enter the court and its office address, the claim number, the parties with their references, and whose costs are being assessed.
- Enter when the notice was served. Enter the date and method of service of the notice of commencement, and the new date if the time for points of dispute was extended. The builder shows when that time ended and the first day you can file.
- Confirm no points of dispute have arrived. If any have been served, even late, the court cannot issue the certificate: request an assessment on Form N258 instead.
- Sign and download. Add the name to print as the signature, the date and your fee account number if you have one, then download the filled N254.
- File it. File it at the appropriate office with copies of the notice of commencement and the costs order, and the court fee.
When you can request a default costs certificate
Points of dispute must be served within 21 days after service of the notice of commencement (CPR 47.9(2)), a time the parties can extend or shorten by agreement, or the court by order (PD 47 para 8.1). Once that time has expired without any being served, the receiving party may file a request for a default costs certificate (CPR 47.9(4)). If any party serves points of dispute before the certificate is issued, even late, the court may not issue it (CPR 47.9(5)), so check nothing has arrived before filing. The builder counts the 21 days from the deemed date of service of the notice, or uses the extended date you enter; our detailed assessment deadline calculator sets out every other date.
The 21 days run only from valid service. Email counts only where the paying party, or its solicitor, has said in writing that it accepts service by email and given the address (PD 6A para 4.1). A certificate the receiving party was not entitled to, because it was requested too early or the notice was not properly served, must be set aside (CPR 47.12(1)).
What to file with it, and where
The request must be in Form N254, signed by the receiving party or its legal representative, and filed at the appropriate office with a copy of the document giving the right to detailed assessment (PD 47 para 10.1). The form itself certifies that the notice of commencement, the bill and that document were served, and that copies of the notice and the document are attached. The fee is £82.00 (fee 5.3). The appropriate office is the County Court hearing centre or District Registry dealing with the case when the costs order was made, or the Senior Courts Costs Office in other cases (PD 47 para 4.1); for the London County Court hearing centres in PD 47 para 4.2, default costs certificates are still issued locally.
The certificate
The certificate, in Form N255, includes an order to pay the costs to which it relates (CPR 47.11(2); PD 47 para 10.2), and the receiving party is treated as having permission to draw it up (PD 47 para 10.3). It adds fixed costs of £80.00 plus a sum equal to the court fee on the certificate, unless the court orders otherwise (PD 47 para 10.7), but no more than the notice of commencement showed for costs and court fee (PD 47 para 10.8).
Setting a certificate aside
The court must set a default costs certificate aside if the receiving party was not entitled to it, and may set it aside or vary it if there is some good reason why the assessment should continue (CPR 47.12). An application needs evidence, the court looks at whether it was made promptly, and as a general rule the applicant must file a copy of the bill, the certificate and the draft points of dispute it would serve (PD 47 para 11.2). The court can impose conditions and order a payment on account (PD 47 para 11.3). The application fee is £152.00 (fee 5.5).
Related guides
- Before this step: the notice of commencement, with our free N252 builder; if points of dispute were served, our free N258 builder
- Provisional assessment in housing disrepair costs: why the replies matter
- Points of dispute in housing disrepair costs: the 12 most common reductions
- Points of dispute in clinical negligence costs: the timetable, the budget and the usual challenges
- Ward v Rai [2026] EWCA Civ 816: when can defective points of dispute survive?
- The terms, defined: default costs certificate and points of dispute
- Every costs form explained: our costs forms and precedents guide
Sources
- Form N254: request for a default costs certificate (HMCTS, GOV.UK)
- CPR Part 47 (rules 47.9, 47.11 and 47.12)
- Practice Direction 47 (paras 4.1, 4.2, 8.1, 10 and 11)
- Practice Direction 6A (para 4.1, service by email)
- CPR Part 5 (rule 5.3, signatures)
- Civil court fees (EX50) and the Civil Proceedings Fees Order 2008, Schedule 1 (fees 5.3 and 5.5)