North Castle, NY · Westchester County
Affidavit of Final Cost
The Affidavit of Final Cost reports the actual cost of a permitted building improvement, and the property owner or agent submits it to the North Castle Building Department.
- licensed online notary
- ~15 min average
- Notarized PDF emailed
What you’ll need
- Government-issued photo ID
- Webcam-enabled device (laptop or phone)
- This form, ready to upload as a PDF
What this form is
Use this form to state the estimated construction cost listed with the building permit and the actual cost of the improvement, including materials and contractor and subcontractor fees. The owner or agent responsible for the improvement signs the affidavit for the Building Department’s final review. North Castle may request contracts and invoices, and fees for costs above the amount stated on the permit application are due when this form is submitted.
Who needs it
The owner or agent responsible for the improvement completes this affidavit for the North Castle Building Department as part of final permit review.
Why it needs a notary
The form has a jurat marked “Sworn to before me”; the applicant, who identifies as the responsible owner or agent, signs before the notary.
How to get this notarized
- 1
Download the Form
Get the Affidavit of Final Cost from the North Castle Building Department.
- 2
Fill In the Details
Provide applicant, owner, property and permit information, then enter estimated and actual improvement costs.
- 3
Book an Online Notary
Arrange a remote session with a commissioned online notary.
- 4
Sign on Video
Sign the affidavit during the video session when directed by the notary.
- 5
Submit to the Town
Send the notarized form to the North Castle Building Department for final review.
Preview the form
The blank PDF straight from North Castle. Look it over, then upload your filled copy to start the notary session.
You’ll need ID and a webcam.
A licensed online notary will join you on video, verify your government-issued ID, witness your signature, and apply their seal. You’ll receive the notarized PDF by email when the session ends.
Frequently asked questions
- How do I complete the Affidavit of Final Cost?
- Enter the permit, applicant, owner and property details, then state the estimated and actual improvement costs. Sign before a notary and submit the form to the North Castle Building Department.
- Do I need to sign this form in front of a notary?
- Yes. The form includes a “Sworn to before me” jurat, so the applicant must sign before a notary.
- Can I use a commissioned online notary?
- New York authorizes remote online notarization by a commissioned online notary under Executive Law §135-c, effective since 2023. Check that the town accepts the completed form in your circumstances.
- What supporting documents might the town request?
- Upon final review, the Building Inspector or designee may require contracts and invoices for the improvement. Fees for costs above the permit application estimate are due when you submit the form; confirm with the city, town or village if unsure.
Affidavit of Final Cost in other Westchester County cities
Each city publishes its own version of this form. Pick the city where you’re filing.