CoStar vs Notarize Comparison: Reviews, Features, Pricing & Alternatives in 2026

Detailed side-by-side comparison to help you choose the right solution for your team

Updated Apr 2026 8 min read

CoStar

0.0 (0 reviews)

CoStar is a comprehensive commercial real estate information platform providing verified property data, market analytics, and inventory tracking to help you make informed investment and leasing decisions.

Starting at --
Free Trial NO FREE TRIAL
VS

Notarize

0.0 (0 reviews)

Notarize is a digital identity and fraud prevention platform that provides legally binding online notarization services for individuals and businesses to sign and verify documents from any device.

Starting at $25/mo
Free Trial NO FREE TRIAL

Quick Comparison

Feature CoStar Notarize
Website costar.com notarize.com
Pricing Model Custom Subscription
Starting Price Custom Pricing $25/month
FREE Trial ✘ No free trial ✘ No free trial
Free Plan ✘ No free plan ✘ No free plan
Product Demo ✓ Request demo here ✓ Request demo here
Deployment cloud mobile saas mobile
Integrations LoopNet Ten-X Microsoft Outlook Salesforce Encompass Dotloop Dropbox Google Drive Box Microsoft OneDrive Sisu Qualia
Target Users small-business mid-market enterprise solopreneur small-business mid-market enterprise
Target Industries real-estate real-estate legal financial-services
Customer Count 0 0
Founded Year 1987 2015
Headquarters Washington, D.C., USA Boston, USA

Overview

C

CoStar

CoStar gives you access to the world’s largest database of commercial real estate information. You can research millions of properties, track market trends, and analyze comparable sales to stay ahead of the competition. Whether you are a broker looking for listings or an investor evaluating a new market, the platform provides verified data that helps you move faster and with more confidence.

You can manage your entire workflow from one interface, from identifying off-market opportunities to monitoring tenant movements. The software serves professionals across the industry, including appraisers, lenders, and property managers. By using their deep analytical tools, you can create professional reports and presentations that clearly demonstrate market value and potential risks to your clients or stakeholders.

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Notarize

Notarize provides a secure way to get your documents notarized online in minutes rather than traveling to find a physical notary. You can connect with a licensed electronic notary via live video call 24/7 to sign and seal documents legally from your computer or smartphone. This eliminates the logistical headaches of traditional paper-based processes while maintaining high security standards for identity verification.

The platform serves everyone from individuals needing a single power of attorney to large enterprises in real estate and financial services. You can integrate the service directly into your existing business workflows to provide a branded, digital closing experience for your customers. It simplifies complex transactions by providing a digital audit trail and ensuring every document meets state-specific legal requirements.

Overview

C

CoStar Features

  • Property Research Access detailed records for millions of commercial properties including ownership history, building specifications, and historical photos.
  • Market Analytics Monitor submarket trends with interactive charts and data sets to predict future rent growth and vacancy shifts.
  • Verified Listings Search thousands of active for-lease and for-sale listings that are updated daily by a massive research team.
  • Sales Comparables Evaluate recent transactions with confirmed sale prices and cap rates to accurately value any commercial asset.
  • Tenant Tracking Identify which companies are moving or expanding so you can pitch your services to the right decision-makers.
  • Custom Reporting Generate professional, branded PDF reports and presentations to share market insights directly with your clients.
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Notarize Features

  • 24/7 Notary Access. Connect with a live, licensed electronic notary at any time of day or night to complete your documents.
  • Multi-Factor Authentication. Verify your identity securely using automated credential analysis and knowledge-based authentication before you start the session.
  • Video Meeting Records. Access full video recordings and digital audit trails of every notarization session for your compliance and security records.
  • Mobile Notarization. Sign and notarize your important documents on the go using dedicated apps for your iPhone or Android device.
  • In-House Notary Tools. Equip your own team of notaries with the digital tools they need to serve your clients remotely.
  • White-Label Experience. Provide a consistent brand experience by adding your company logo and colors to the digital signing room.

Pricing Comparison

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CoStar Pricing

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Notarize Pricing

Notarize Personal
$25
  • One legal notarization included
  • Available 24/7 via video call
  • Digital document storage
  • Identity verification included
  • Additional seals for $10 each

Pros & Cons

M

CoStar

Pros

  • Unmatched depth of verified commercial property data
  • Powerful filtering tools for finding niche opportunities
  • Comprehensive historical sales and lease information
  • Professional reporting tools save hours of manual work

Cons

  • High subscription costs compared to smaller competitors
  • Restrictive long-term contracts are standard practice
  • Steep learning curve for the advanced analytics
A

Notarize

Pros

  • Extremely convenient 24/7 availability for urgent documents
  • User-friendly interface makes the video call process simple
  • Saves significant time compared to finding local notaries
  • Secure identity verification provides peace of mind

Cons

  • Higher cost per document than traditional notaries
  • Occasional wait times for available notaries during peaks
  • Strict identity questions can be difficult to pass
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