Form entry
The redesigned URAR, the Restricted Appraisal Update and the Completion Report, with GSE labels, options and maximum lengths enforced as you type.
UAD 3.6Now required for new UCDP submissions
The UAD 3.6 engineinside your appraisal software
Form entry, live GSE compliance checks, MISMO 3.6 XML, GSE-style PDFs and UCDP preflight. One API, branded as your own.
Built from the published GSE specification: Appendices A, D, E, F and H.
Your Company · URAR
Assignment
Purchase
Traditional Appraisal
DEF Bank
2 issues to fix before delivery
No findings. Ready for UCDP.
728/728
Appendix H-1 rules automated
204
H-2 and H-3 rules for Updates and Completions
15/15
GSE sample reports pass with zero findings
SYS9001–9010
UCDP package checks before you submit
Product
Everything between the appraiser and UCDP
Five hard problems that every appraisal platform has to solve for UAD 3.6. UAD Engine ships them as one tested API.
Live validation
Every Appendix H-1, H-2 and H-3 rule, with each finding pointed at the field that caused it. Fix it before UCDP sees it.
MISMO 3.6 XML
Lossless read and write, validated against the GSE XSD itself. Import an existing report, edit it and export it again.
GSE-style PDFs
The report PDF laid out to the Appendix E style guide, with comparable grids, defect tables and photos in place.
UCDP preflight
Send a delivery package and get UCDP's own SYS findings back before you submit it.
PDF rendering
The report PDF, done right
Rendering the redesigned URAR is where most UAD 3.6 projects stall. UAD Engine prints every report field in Report Field ID order, to the GSE style guide, straight from the XML.
- Appendix E typography, rules and section layout
- Comparable grids with adjustments
- Defect tables, photos, maps and sketches in place
- URAR, Restricted Appraisal Update and Completion Report
Developers
An API your developers will enjoy
REST and JSON, keys per tenant, and errors that name the field. Check a report in one call.
- Stateless validation: nothing is stored
- Rate limits and usage metering per tenant
- An audit log of every change
- Postgres storage, ready for Docker
curl https://uadengine.com/v1/validate \
-H "Authorization: Bearer $UAD_API_KEY" \
-H "Content-Type: application/xml" \
--data-binary @report.xmlimport { readFile } from "node:fs/promises";
const res = await fetch("https://uadengine.com/v1/validate", {
method: "POST",
headers: {
Authorization: `Bearer ${process.env.UAD_API_KEY}`,
"Content-Type": "application/xml",
},
body: await readFile("report.xml"),
});
const { valid, issues } = await res.json();import os, requests
res = requests.post(
"https://uadengine.com/v1/validate",
headers={"Authorization": f"Bearer {os.environ['UAD_API_KEY']}",
"Content-Type": "application/xml"},
data=open("report.xml", "rb"),
)
print(res.json()["issues"])Response · 200 OK
{
"valid": false,
"issues": [
{
"severity": "error",
"ruleId": "UAD1002",
"fieldId": "subject.city",
"message": "Provide the city name for the subject property physical address.",
"path": "/MESSAGE/.../ADDRESS/CityName"
}
]
}White label
Your brand. Our engine.
Drop the uad-form web component into your app. It takes your colour, logo and font, works in light and dark mode, and runs on phones.
- Your name on the form, the PDF and the software identity in the XML
- Short-lived embed tokens, so API keys never reach the browser
- Theme it with CSS variables
Try a brand colour
Your Company
Purchase
Traditional Appraisal
No findings. Ready for UCDP.
index.html
<script src="https://uadengine.com/embed.js" defer></script>
<uad-form api="https://uadengine.com"
report="rpt_8f2k…" token="emb_…"></uad-form>Who it's for
Built for the people who build appraisal tools
Appraisal firms
Run your own branded forms software without hiring a compliance team.
Appraisal software companies
Move to UAD 3.6 on a tested engine and spend your roadmap on what makes you different.
AMCs and lender tech teams
Check reports and delivery packages against the GSE rules before they reach UCDP.
Coverage
Every UAD 3.6 report type
Each report is checked against the rules for its own type.
| Report | Appendix | Rules | Automated |
|---|---|---|---|
| Uniform Residential Appraisal Report (URAR) | H-1 v1.5 | 728 | 728/728 |
| Restricted Appraisal Update | H-2 v1.3 | 102 | 102/102 |
| Completion Report | H-3 v1.3 | 102 | 102/102 |
Platform
Production basics, built in
Multi-tenant
Separate tenants, API keys and branding for every client.
Embed tokens
Browser-safe tokens scoped to one report, with an expiry.
Audit log
Who changed what, kept even after a report is deleted.
Usage metering
Reports, PDFs, packages and validations counted per month.
Rate limits
Per-tenant limits with standard headers and Retry-After.
Safe saves
Version-checked writes, so two saves can never overwrite each other.
FAQ
Questions, answered
What is UAD 3.6?
The new Uniform Appraisal Dataset from Fannie Mae and Freddie Mac, together with the redesigned URAR. Since November 2, 2026, new appraisals submitted to UCDP must use it.
Can I put my own brand on it?
Yes. The form, the PDF and the software identity in the XML can all carry your company's name, colours and logo.
Which reports do you support?
The URAR, the Restricted Appraisal Update and the Completion Report, each checked against its own GSE rule set (H-1, H-2 and H-3).
Can I check reports made in other software?
Yes. Send any UAD 3.6 XML to the validation endpoint, or a full delivery package to preflight, and get the findings back by field.
Is UAD Engine verified by the GSEs?
Fannie Mae and Freddie Mac each verify appraisal software themselves. Contact us for UAD Engine's current status and what it means for a product built on it.
How is it priced?
By usage: reports created, PDFs rendered, packages built and validations run. Get in touch and we'll quote for your volume.
Ready for UAD 3.6?
Tell us what you're building. We'll set you up with an API key and a sandbox tenant.
Request access →Or email [email protected]