CO E-Signature API
ClosingSignIQ in Colorado
Embed legally binding e-signatures in your Colorado application. Every signed document sealed with an X.509 digital certificate from our Certificate Authority. Colorado has adopted UETA. ESIGN Act compliant. $0 per-envelope cost.
CO E-Signature Law
Electronic signatures are legally binding in Colorado.
ESIGN Act
Federal Law (2000)
15 USC §7001. Electronic signatures have the same legal effect as wet-ink signatures in all 50 states.
UETA Status
Colorado has adopted UETA
Colorado adopted the Uniform Electronic Transactions Act, providing state-level recognition of electronic signatures.
Remote Notarization
Legal since 2020
Colorado permits Remote Online Notarization (RON). Colorado Revised Statutes Title 24, Article 21, Part 5
Notary Fee Cap
$5 per notarial act
ClosingSignIQ e-signatures are $5/envelope (Pay-Go) or FREE on Pro+, regardless of state. Notarization fees follow state law.
CO Documents
Common Colorado documents for e-signature.
Real estate deeds
Trust documents
Powers of attorney
Business agreements
Affidavits
Key Colorado industries using ClosingSignIQ:
Technology and startupsAerospace and defenseEnergy and natural resourcesTourism and outdoor recreation
Colorado
E-signatures where Colorado does business.
Video by Ravenswood Photography on Pexels
Integration
Add e-signatures to your Colorado app in minutes.
your-colorado-app/api/sign.ts
// Send a real estate deeds for e-signature in Colorado
const envelope = await fetch('https://closingiq.app/api/v1/signing/envelopes', {
method: 'POST',
headers: { 'X-API-KEY': process.env.CLOSINGSIGNIQ_KEY, 'Content-Type': 'application/json' },
body: JSON.stringify({
title: 'Real estate deeds — Colorado',
signers: [{ name: 'Signer Name', email: '[email protected]' }],
}),
});
// X.509 certificate + SHA-256 audit trail included automaticallyAPI Pricing
Start free. Scale in any state.
Free
$0
5 envelopes/month
- ✓ API + OAuth
- ✓ Audit trail
- ✓ Email notifications
Starter
$29/mo
50 included, then $0.50
- ✓ Embedded signing
- ✓ X.509 certificate
- ✓ Webhooks
Growth
$79/mo
250 included, then $0.35
- ✓ White-label
- ✓ our CA certs
- ✓ SMS notifications
Scale
$199/mo
1,000 included, then $0.25
- ✓ Full white-label
- ✓ Templates API
- ✓ 99.9% SLA
FAQ
E-signature API questions for Colorado.
Is remote online notarization legal in Colorado?
Yes. Colorado authorized RON through SB 20-096 in 2020. The state adopted the Revised Uniform Law on Notarial Acts (RULONA) framework. Notaries must register as electronic notaries. Additionally, ClosingSignIQ provides X.509 digital certificates from our Certificate Authority and SHA-256 hash-chained audit trails for every signature.
What is the Colorado notary fee cap?
Colorado notaries may charge up to $5 per notarial act. Additional reasonable travel fees are permitted for mobile notary services. Additionally, ClosingSignIQ provides X.509 digital certificates from our Certificate Authority and SHA-256 hash-chained audit trails for every signature.
How do I get an apostille in Colorado?
Submit your notarized document to the Colorado Secretary of State with a $10 fee. You can mail documents or visit the Denver office in person. Processing typically takes 3-5 business days. Additionally, ClosingSignIQ provides X.509 digital certificates from our Certificate Authority and SHA-256 hash-chained audit trails for every signature.
Are there special considerations for real estate closings in Colorado?
Colorado is an attorney-optional state for real estate closings, meaning title companies typically handle closings. RON is widely accepted for real estate documents, making remote closings convenient for buyers and sellers. Additionally, ClosingSignIQ provides X.509 digital certificates from our Certificate Authority and SHA-256 hash-chained audit trails for every signature.
Can I use RON for estate planning documents in Colorado?
Yes. Colorado allows RON for most estate planning documents including trusts and powers of attorney. Wills have additional witness requirements that may affect RON procedures. Additionally, ClosingSignIQ provides X.509 digital certificates from our Certificate Authority and SHA-256 hash-chained audit trails for every signature.
Can I use an interpreter during notarization in Colorado?
Colorado permits interpreters for any language barrier under C.R.S. 24-21-514.7 (effective September 2023). The notarial certificate must indicate that an interpreter was used and include their credentials. The notary is shielded from liability for translation errors. ClosingIQ also offers 189-language document translation. Additionally, ClosingSignIQ provides X.509 digital certificates from our Certificate Authority and SHA-256 hash-chained audit trails for every signature.
What makes ClosingSignIQ different from DocuSign or BoldSign?
ClosingSignIQ is the only e-signature API with built-in AI document scanning and X.509 digital certificates from our Certificate Authority. Every signature includes a SHA-256 hash-chained audit trail. Plus, our API costs 80% less than DocuSign with $0 per-envelope infrastructure costs.
Other States
ClosingSignIQ API is available in all 50 states.
Ship e-signatures in Colorado today.
Free tier. X.509 certificates. SHA-256 audit trail. ESIGN Act + Colorado UETA compliant.