Get Paid What You're Owed
LienShield is mechanics-lien filing and deadline-tracking software for subcontractors, suppliers, and construction professionals in all 56 US jurisdictions. Enter your project details once, we fill the forms, check compliance, and guide you through filing.
Free forever. No credit card required. 3 filings per month.
Without LienShield
- Miss deadlines, lose your lien rights forever
- Wrong forms, rejected by county clerks
- Pay lawyers $500+ per filing
- Hours researching state-specific requirements
- Unpaid invoices drain your business
With LienShield
- Automatic deadline tracking, never miss a date
- Pre-validated forms, accepted on first try
- Free tier, or just $15-19/month
- 2 minutes, not 2 hours
- Get paid what you earned
Three Steps to Protection
From unpaid invoice to filed lien in minutes, not days.
Enter Project Details
Property address, who owes you, and how much. That's it.
We Handle the Rest
Auto-detect your state, fill every form, check compliance, generate PDFs.
File & Get Paid
Download your forms, we tell you exactly where to file. Track everything.
Everything You Need to Get Paid
Built by construction professionals, for construction professionals. Every feature designed to put money back in your pocket.
Smart Form Filling
Enter your project details once. We fill every form for your state automatically.
Never Miss a Deadline
Smart deadline tracking for every jurisdiction. Get alerts before critical dates pass.
Compliance Checker
Your forms are validated before filing. Catch errors that cause county clerk rejections.
Every Form You Need
Preliminary notices, demand letters, mechanics liens, lien releases - all covered.
All 56 Jurisdictions
Every US state, DC, and territories. State-specific rules, forms, and filing offices.
Escalation Pipeline
From invoice to demand letter to lien filing. We guide you through every step.
Built for Every Construction Professional
Whether you swing a hammer or deliver lumber, if you're owed money for improving a property, LienShield has you covered.
General Contractors
Protect your full contract value when owners won't pay.
Subcontractors
Electricians, plumbers, HVAC, carpenters, roofers. All covered.
Material Suppliers
Lumber yards, concrete, fixtures. Secure your invoices.
Equipment Rental
Crane, excavator, scaffold rentals. File liens on unpaid rentals.
Design Professionals
Architects, engineers, surveyors. Your design work is lienable.
Laborers
Day laborers and skilled tradespeople. Protect every hour worked.
Specialty Contractors
Demolition, environmental, painting, landscaping. You qualify.
And More
If you improved a property and aren't paid, you likely have lien rights.
Simple, Honest Pricing
Start free. Upgrade when you need more. Cancel anytime.
Free
3 filings/month
- All 56 jurisdictions
- Smart form filling
- Compliance checker
- PDF generation
- Deadline alerts
- Email support
Pro
10 filings/month
- Everything in Free
- Evidence vault
- Email support
- Filing history
Contractor
Unlimited filings
- Everything in Pro
- Unlimited evidence storage
- Unlimited filing history
- Priority support
Your Data Is Locked Down
Construction project data is sensitive. We treat it that way. Every layer of our stack is built with security first.
TLS 1.3 Encryption
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.
Encrypted Database
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.
bcrypt Password Hashing
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.
JWT Token Auth
Stateless JWT authentication with short-lived access tokens (30 min) and secure refresh tokens. Auto-logout on suspicious activity. No session cookies to steal.
Security Headers
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.
Rate Limiting & CORS
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.
Mechanics Lien FAQs
High-intent questions we hear from subcontractors, suppliers, and construction professionals filing in all 56 US jurisdictions.
How long do I have to file a mechanics lien in Texas?
In Texas, original contractors generally have until the 15th day of the fourth month after the month their work was completed, terminated, or abandoned. Subcontractors and suppliers have until the 15th day of the third month. LienShield calculates the exact date for your project and sends pre-deadline alerts.
Do I need to send a preliminary notice in California?
Yes. California requires a 20-day Preliminary Notice from anyone other than the original direct contractor (and even direct contractors must send it for projects with construction lenders). The notice must be served within 20 days of first furnishing labor or materials. LienShield generates the notice and tracks the deadline automatically.
How long do I have to file a mechanics lien in Florida?
Florida lienors have 90 days from their final furnishing of labor, services, or materials to record a Claim of Lien in the county where the property is located. A Notice to Owner must also be served within 45 days of first furnishing for most lienors not in privity with the owner. LienShield handles both deadlines.
Can I file a mechanics lien without a written contract?
In most jurisdictions, yes — an oral contract or implied contract supported by evidence (invoices, communications, change orders) is enough to support a lien claim. A few states require written authorization for certain residential work. LienShield's evidence vault keeps your supporting records organized in case the lien is challenged.
What happens if I miss the lien deadline?
Missing the statutory deadline almost always extinguishes your lien rights for that project — courts strictly enforce the dates. You may still have other remedies (breach of contract, payment bond claim, prompt-payment-act penalty) but the lien itself is gone. That's why LienShield treats deadline alerts as a critical-path feature.
What's the difference between a preliminary notice and a mechanics lien?
A preliminary notice is the early warning shot — sent before any dispute, it tells the property owner and lender you're working on the project so they can protect their payment chain. A mechanics lien is the enforcement tool — recorded against the property after a payment dispute to force payment or sale. Most states require the preliminary notice as a precondition to a valid lien.
Stop Losing Money on Unpaid Work
Every day you wait is a day closer to losing your lien rights. Start protecting your payments now.
Get Started FreeLearn About Lien Rights
Guides on mechanics liens, preliminary notices, deadlines, and payment protection strategies for contractors.
Read the LienShield Blog