AI-powered mechanics lien protection for contractors, suppliers, and construction professionals. Enter your project details, we fill the forms, check compliance, and guide you through filing. Every state. Every territory. Every form.
Free forever. No credit card required. 3 filings per month.
From unpaid invoice to filed lien in minutes, not days.
Property address, who owes you, and how much. That's it.
Auto-detect your state, fill every form, check compliance, generate PDFs.
Download your forms, we tell you exactly where to file. Track everything.
Built by construction professionals, for construction professionals. Every feature designed to put money back in your pocket.
Enter your project details once. Our AI fills every form for your state automatically.
Smart deadline tracking for every jurisdiction. Get alerts before critical dates pass.
AI validates your forms before filing. Catch errors that cause county clerk rejections.
Preliminary notices, demand letters, mechanics liens, lien releases - all covered.
Every US state, DC, and territories. State-specific rules, forms, and filing offices.
From invoice to demand letter to lien filing. We guide you through every step.
Whether you swing a hammer or deliver lumber, if you're owed money for improving a property, LienShield has you covered.
Protect your full contract value when owners won't pay.
Electricians, plumbers, HVAC, carpenters, roofers — all covered.
Lumber yards, concrete, fixtures — secure your invoices.
Crane, excavator, scaffold rentals — file liens on unpaid rentals.
Architects, engineers, surveyors — your design work is lienable.
Day laborers and skilled tradespeople — protect every hour worked.
Demolition, environmental, painting, landscaping — you qualify.
If you improved a property and aren't paid, you likely have lien rights.
Start free. Upgrade when you need more. Cancel anytime.
3 filings/month
10 filings/month
Unlimited filings
Construction project data is sensitive. We treat it that way. Every layer of our stack is built with security first.
All data in transit is encrypted with TLS 1.3 — the same standard used by banks. Every API call, every document download, every login is encrypted end-to-end.
Your project data is stored in PostgreSQL with encryption at rest. Hosted on Railway's SOC 2 Type II certified infrastructure with automated daily backups.
Passwords are hashed with bcrypt (work factor 12) before storage. We never store plaintext passwords. Even if our database were compromised, your password stays safe.
Stateless JWT authentication with short-lived access tokens (30 min) and secure refresh tokens. Auto-logout on suspicious activity. No session cookies to steal.
Every response includes X-Content-Type-Options, X-Frame-Options (DENY), X-XSS-Protection, strict Referrer-Policy, and Permissions-Policy headers to prevent clickjacking, XSS, and MIME attacks.
API rate limiting prevents abuse. Strict CORS policy ensures only our frontend can make requests. Input validation on every endpoint prevents injection attacks.
We never sell your data. We never share it with third parties. Your project information is yours — we just help you protect your payment rights.
Every day you wait is a day closer to losing your lien rights. Start protecting your payments now.
Get Started Free