---
title: Demand letter resources
description: Templates and guides for sending payment demand letters the right way.
seo-description: Demand letter templates and guides. Templates, checklists, and how-to mail instructions.
group: resources
indexable: true
schema: article
eyebrow: Resource hub
published: 2026-01-19T23:22:21-06:00
updated: 2026-01-21
path: /demand-letters
---
# Demand letter resources

Templates and guides for sending payment demand letters the right way.

## Who this hub is for
- Businesses or contractors requesting overdue payment
- Individuals requesting reimbursement or repayment
- Anyone who needs a clear written record before escalation

## How it works with PostalForm
1. **Choose the right path** — start the guided payment-demand packet workflow, use a template, or upload your own PDF
2. **Organize supporting records** — invoices, photos, agreements, or correspondence
3. **Mail with proof** — add Certified Mail for tracking and signature

## Guided workflows
- [Payment Demand Packets](/forms/payment-demand-packets) — answer guided questions, upload invoices and supporting documents, preview the assembled packet, and continue straight to mailing
- [California 20-Day Preliminary Notice](/forms/california-20-day-preliminary-notice) — generate a California preliminary notice packet, add multiple recipients, review the PDF, and continue to Certified Mail
- [Florida Notice to Owner / Notice to Contractor](/forms/florida-notice-to-owner) — prepare a Florida construction notice packet, review the generated PDF, and continue straight to Certified Mail checkout
- [Texas Notice of Claim for Unpaid Labor or Materials](/forms/texas-notice-of-claim-unpaid-labor-materials) — generate a Texas construction notice packet, attach invoices, add owner and original-contractor recipients, and send each copy by Certified Mail

## Templates
- [Final notice before legal action letter template](/letters/final-notice-before-legal-action-letter-template)
- [Payment demand letter template for services rendered](/letters/payment-demand-letter-template)
- [Notice of intent to send to collections letter template](/letters/notice-of-intent-to-send-to-collections-letter-template)
- [Payment plan request letter template](/letters/payment-plan-request-letter-template)
- [Payment demand letter template for multiple invoices and job sites](/letters/multiple-invoices-payment-demand-letter-template)
- [Contractor payment demand letter template](/letters/contractor-payment-demand-letter-template)
- [General contractor payment demand letter template](/letters/general-contractor-payment-demand-letter-template)
- [Roofing contractor payment demand letter template](/letters/roofing-contractor-payment-demand-letter-template)
- [Roofing invoice final notice letter template](/letters/roofing-invoice-final-notice-letter-template)
- [Second notice overdue invoice letter template](/letters/second-notice-overdue-invoice-letter-template)
- [Past due invoice reminder letter template (friendly)](/letters/past-due-invoice-reminder-letter-template)
- [Notice of intent to file a mechanics lien letter template](/letters/notice-of-intent-to-file-mechanics-lien-letter-template)

## Trade-specific templates
- [HVAC unpaid invoice demand letter template](/letters/hvac-unpaid-invoice-demand-letter-template)
- [Landscaping unpaid invoice letter template](/letters/landscaping-unpaid-invoice-letter-template)
- [Plumbing unpaid invoice final notice template](/letters/plumbing-unpaid-invoice-final-notice-template)

## Guides
- [Texas Notice of Claim for Unpaid Labor or Materials online](/demand-letters/texas-notice-of-claim-unpaid-labor-materials)
- [California 20-Day Preliminary Notice online](/resources/california-20-day-preliminary-notice)
- [Florida Notice to Owner online](/demand-letters/florida-notice-to-owner-online)
- [Mail a pre-lien notice online](/demand-letters/mail-pre-lien-notice-online)
- [How to mail a demand letter (and keep proof)](/demand-letters/how-to-mail-a-demand-letter)
- [Demand letter checklist](/demand-letters/demand-letter-checklist)
- [How to write a final payment notice that is clear](/demand-letters/how-to-write-a-final-payment-notice)
- [How long to give in a demand letter](/demand-letters/how-long-to-give-in-a-demand-letter)
- [How to organize attachments for a payment demand packet](/demand-letters/how-to-organize-attachments-for-a-payment-demand-packet)
- [How to mail a notice of intent to lien](/demand-letters/how-to-mail-a-notice-of-intent-to-lien)
- [What to include in a pre-lien notice packet](/demand-letters/what-to-include-in-a-pre-lien-notice-packet)
- [What to do if you receive a final notice before legal action](/demand-letters/what-to-do-if-you-receive-a-final-notice-before-legal-action)

## Certified Mail option
Need proof of delivery? Use **Certified Mail with electronic return receipt (First Class only)**.

[Certified Mail with electronic return receipt (First Class only)](/certified-mail-online)


## Ready to send it?
Start with the guided packet workflow when you want more than a one-page letter. If you already have a finished PDF, you can still upload it directly. Start payment demand packets Start California 20-Day Preliminary Notice Start Florida Notice to Owner Start Texas Notice of Claim Mail a demand letter

[Start payment demand packets](/forms/payment-demand-packets)