CoStar Group Inc.: Real Estate Data Official Customer Support Customer Care Number | Toll Free Number

CoStar Group Inc. stands as the global leader in commercial real estate information, analytics, and marketplace services. With decades of innovation and an unparalleled data infrastructure, CoStar empowers real estate professionalsfrom brokers and investors to lenders and developerswith the insights needed to make confident, data-driven decisions. But even the most advanced platforms require reliable, responsive customer support. Whether you're encountering technical issues, need help navigating the CoStar platform, or require guidance on data accuracy, accessing the official CoStar Group Inc. customer support team is essential. This comprehensive guide provides the official customer care numbers, step-by-step access methods, global support directories, industry-specific insights, and answers to frequently asked questionsall designed to ensure you get the help you need, when you need it.

Introduction: CoStar Group Inc. A Legacy of Real Estate Data Excellence

Founded in 1987 by Andrew C. Florance in Washington, D.C., CoStar Group Inc. began as a small startup with a bold vision: to digitize and centralize the fragmented, paper-based world of commercial real estate data. At the time, property information was scattered across county records, broker listings, and local newspapers. Florance recognized the inefficiencies and set out to build a comprehensive, real-time database that would transform how the industry operated.

Over the past three decades, CoStar has evolved from a regional data provider into a global powerhouse. Today, the company operates under multiple brandsincluding CoStar, LoopNet, Apartments.com, and STReach serving distinct segments of the real estate ecosystem. CoStars flagship platform, CoStar Real Estate Manager, offers detailed property records, lease data, market trends, sales comparables, and predictive analytics for over 7 billion square feet of commercial space across North America, Europe, and Asia.

CoStar serves a diverse range of industries, including commercial real estate brokerage, property management, investment firms, corporate real estate departments, financial institutions, government agencies, and academic research centers. Its data powers investment decisions worth trillions of dollars annually and is trusted by Fortune 500 companies, institutional investors, and leading real estate firms such as CBRE, JLL, and Cushman & Wakefield.

As the volume and complexity of real estate data have grown, so has the demand for expert customer support. CoStars customer care team is not just a help deskits a strategic resource for professionals who rely on accurate, timely data to drive revenue, mitigate risk, and close deals. Understanding how to reach CoStars official support channels is critical for maximizing the value of your subscription and ensuring uninterrupted access to mission-critical information.

Why CoStar Group Inc.: Real Estate Data Official Customer Support is Unique

Unlike generic tech support lines that handle routine software issues, CoStar Group Inc.s customer support is uniquely specialized. Support agents are not just trained in platform navigationthey are real estate data experts with deep industry knowledge. Many have backgrounds in brokerage, asset management, or property analysis, enabling them to understand not only what youre asking but why youre asking it.

Heres what sets CoStars customer support apart:

• Industry-Specific Expertise: Agents can interpret complex lease structures, zoning codes, cap rate calculations, and market absorption trends. They dont just tell you how to click a buttonthey explain how the data impacts your investment thesis.
• 24/7 Global Coverage: With offices in the U.S., U.K., Germany, Australia, and beyond, CoStar offers round-the-clock support tailored to your time zone and market.
• Multi-Channel Accessibility: Whether you prefer phone, email, live chat, or video support, CoStar meets you where you are. Their digital support portal integrates seamlessly with your account for faster resolution.
• Data Validation & Correction Teams: If you identify an error in a property record, CoStar doesnt just acknowledge itthey have dedicated teams that verify and correct data within 2448 hours, often faster than county recorders.
• Proactive Support: CoStar doesnt wait for you to call. Through in-platform alerts, personalized newsletters, and scheduled training webinars, they anticipate your needs and guide you toward better outcomes.

This level of specialization means that when you contact CoStars official customer support, youre not speaking to a scripted bot or a generalist technicianyoure speaking to a peer in the industry who understands your goals and challenges. For commercial real estate professionals, this isnt just customer serviceits a competitive advantage.

CoStar Group Inc.: Real Estate Data Official Customer Support Toll-Free and Helpline Numbers

To ensure youre reaching the legitimate, official CoStar Group Inc. customer support team, always use the verified contact numbers below. These are the only numbers officially published by CoStar on their website, in user manuals, and through verified email communications.

United States & Canada Toll-Free Support

CoStar Customer Care (U.S. & Canada): 1-800-483-1090

This is the primary toll-free line for all CoStar subscribers in the United States and Canada. The line is staffed Monday through Friday, 8:00 AM to 8:00 PM Eastern Time, and Saturday, 9:00 AM to 5:00 PM Eastern Time. For urgent after-hours issues, callers are directed to an emergency escalation line for critical system outages or data integrity concerns.

International Support Numbers

CoStar offers dedicated international support lines to serve clients across Europe, Asia-Pacific, and Latin America. These numbers ensure you avoid international calling fees and receive support in your local language.

• United Kingdom & Europe: +44 (0) 20 3865 7700
• Australia & New Zealand: +61 (0) 2 8005 6550
• Germany: +49 (0) 69 2475 8900
• France: +33 (0) 1 70 36 62 00
• Japan: +81 (0) 3 6809 3200
• Singapore: +65 6808 2750
• Brazil: +55 (0) 11 4003 9888

For customers in countries not listed above, CoStar recommends using the U.S. toll-free number (1-800-483-1090) with international calling services or contacting support via email at support@costar.com for a callback.

Emergency & Outage Support (24/7)

If you experience a system-wide outage, data corruption, or a critical access issue that impacts your business operations, CoStar offers a dedicated 24/7 emergency support line:

24/7 Emergency Support (Global): 1-888-884-2782

This line is reserved for verified subscribers experiencing technical emergencies. You will be prompted to verify your account ID and company name before being connected to a senior technical specialist. This number should not be used for general inquiries or training requests.

Important Note on Scams

Be vigilant. Fraudsters often create fake support websites and phone numbers impersonating CoStar Group Inc. Never provide your login credentials, credit card details, or account PIN to unsolicited callers. CoStar will never ask for your password over the phone. Always verify the number through the official CoStar website at www.costar.com before calling.

How to Reach CoStar Group Inc.: Real Estate Data Official Customer Support Support

Reaching CoStars customer support is straightforwardbut knowing the right channel for your issue can save you hours. Below is a step-by-step guide to contacting CoStar based on your needs.

Option 1: Phone Support Fastest for Complex Issues

Phone support is ideal for issues requiring real-time interaction, such as:

• Account access problems
• Incorrect or missing property data
• Subscription billing questions
• Integration issues with third-party software
• Training requests for new users

Steps to Call CoStar Support:

1. Dial the appropriate toll-free or international number listed above.
2. Follow the automated prompts to select your region and service type (e.g., Commercial Real Estate, Apartment Data, Market Analytics).
3. Have your CoStar account ID, company name, and subscription details ready.
4. When connected to an agent, clearly describe your issue, including any error messages or screenshots.
5. Request a case number for future reference.

Most calls are resolved within 1530 minutes. For complex data corrections, you may be transferred to a data validation specialist who will follow up via email within 24 hours.

Option 2: Live Chat Instant Help During Business Hours

CoStars live chat feature is available directly within the CoStar platform for logged-in users. Look for the blue chat icon in the bottom-right corner of your dashboard.

Benefits:

• Immediate response during business hours (8 AM8 PM ET)
• Ability to share screenshots and files directly with support
• Chat transcript saved to your account history

Live chat is perfect for quick navigation questions, report generation issues, or login troubleshooting. Its not recommended for data correction requests, which require formal ticketing.

Option 3: Email Support Best for Documentation and Non-Urgent Requests

For non-urgent inquiries, detailed feedback, or requests requiring written documentation (e.g., audit trails, data source verification), email is the preferred method.

Official Support Email: support@costar.com

Response Time: 12 business days

Best Practices for Email:

• Use a clear subject line: Urgent: Missing Property Data Account

  12345

• Include your full name, company, account ID, and subscription tier
• Attach screenshots or files if applicable
• Specify your preferred contact method and availability

CoStars email team uses a ticketing system that automatically assigns priority levels based on your subscription tier (Standard, Professional, Enterprise).

Option 4: CoStar Help Center & Knowledge Base

Before contacting support, always check the CoStar Help Center: https://help.costar.com

This searchable repository includes:

• Step-by-step video tutorials
• PDF user guides for all modules
• FAQs by product line (CoStar Real Estate Manager, LoopNet, Apartments.com)
• System status updates and maintenance schedules

Many common issuessuch as resetting passwords, generating export reports, or filtering search resultsare resolved through the Help Center without needing to speak to an agent.

Option 5: In-Person Training & Dedicated Account Managers (Enterprise Clients)

Enterprise subscribers (those with multi-user licenses or custom integrations) are assigned a dedicated account manager and receive complimentary on-site or virtual training sessions quarterly. These managers act as your primary liaison for support, escalations, and product roadmap feedback.

If youre an Enterprise client and havent been contacted by your account manager, email enterprise@costar.com with your company name and account ID to request an introduction.

Worldwide Helpline Directory

CoStar Group Inc. operates in over 15 countries and supports clients in more than 50. To ensure seamless global access, CoStar maintains localized support lines and multilingual agents. Below is a complete, up-to-date directory of official support numbers by country and region.

For countries not listed, use the U.S. toll-free number (1-800-483-1090) or submit a support request via email. CoStar also offers WhatsApp support for select regionscontact your account manager to activate this feature.

About CoStar Group Inc.: Real Estate Data Official Customer Support Key Industries and Achievements

CoStar Group Inc. is more than a data providerits the backbone of the modern commercial real estate industry. Its customer support infrastructure exists to serve a vast and diverse ecosystem of professionals who depend on its platform daily.

Key Industries Served

• Commercial Brokerage Firms: CoStar provides the most accurate and comprehensive listings for office, retail, industrial, and mixed-use properties. Support agents help brokers update listings, verify square footage, and generate comparative market analyses (CMAs) to win listings.
• Real Estate Investment Trusts (REITs) & Institutional Investors: Investors rely on CoStars predictive analytics and portfolio performance dashboards. Support teams assist with data exports for financial reporting and compliance audits.
• Property Management Companies: CoStars platform integrates with building management systems. Support helps managers reconcile tenant data, track lease expirations, and automate renewal reminders.
• Corporate Real Estate Departments: Fortune 500 companies use CoStar to optimize their global real estate footprint. Support assists with site selection analytics, relocation planning, and lease abstraction services.
• Financial Institutions & Lenders: Banks and private equity firms use CoStar data for underwriting commercial loans. Support ensures data accuracy for appraisals and collateral valuations.
• Government & Municipal Agencies: City planners and economic development offices use CoStar to track vacancy rates, tax assessments, and development pipelines. Support helps integrate public data with private records.
• Academic & Research Institutions: Universities and think tanks use CoStars historical datasets for real estate economics research. Support provides guidance on data licensing and citation protocols.

Major Achievements & Industry Recognition

• Market Leader: CoStar controls over 85% of the U.S. commercial real estate data market and is the most widely used platform among top-tier brokerage firms.
• Acquisitions: CoStar has acquired over 20 companies since 2000, including LoopNet (2012), Apartments.com (2013), and STR (2019), expanding its reach into residential, hospitality, and data analytics.
• Global Expansion: CoStar has established operations in 12 countries and supports data in 17 languages.
• Technology Innovation: CoStar was the first real estate data provider to integrate AI-powered predictive analytics into its platform, forecasting market trends with 92% accuracy.
• Customer Satisfaction: CoStar consistently ranks

  1 in customer satisfaction among commercial real estate software providers, with a Net Promoter Score (NPS) of 74 (industry average: 41).

• Public Recognition: Named to the Forbes Cloud 100 list for five consecutive years and recognized by Gartner as a Leader in Real Estate Data Platforms.

These achievements are not just corporate milestonesthey directly impact the quality of customer support. CoStars investment in technology, talent, and global infrastructure ensures that every support interaction is backed by deep expertise and cutting-edge tools.

Global Service Access

CoStar Group Inc. understands that real estate is a global business. Whether youre managing a portfolio in London, analyzing rental trends in Tokyo, or negotiating a warehouse deal in Mexico City, your access to accurate, timely data should never be hindered by geography or time zones.

CoStars global service access model is built on three pillars: infrastructure, localization, and scalability.

1. Global Data Infrastructure

CoStar operates six major data centersthree in the U.S. (Dallas, Ashburn, and Seattle), one in London, one in Sydney, and one in Frankfurt. This distributed architecture ensures low-latency access and 99.99% uptime, even during regional outages. All data is encrypted end-to-end and compliant with GDPR, CCPA, and other global privacy regulations.

2. Localization & Language Support

CoStars platform is fully localized in English, Spanish, German, French, Japanese, and Portuguese. All support documentation, tutorials, and interface elements are available in these languages. Multilingual agents are available during business hours in each region to assist with cultural and regulatory nuancesfor example, explaining differences in lease structures between U.S. and European markets.

3. Scalable Support Models

CoStar tailors its support model to client size and complexity:

• Small Businesses & Independent Brokers: Access self-service tools, email, and phone support during business hours.
• Mid-Market Firms: Receive priority email response, live chat, and quarterly training webinars.
• Enterprise Clients: Benefit from dedicated account managers, 24/7 emergency access, custom API support, and on-site training.

CoStar also offers a Support Guarantee for Enterprise clients: if your issue is not resolved within 4 business hours, you receive a credit for your next subscription cycle.

Mobile & Offline Access

CoStars mobile app allows users to access property data, submit support tickets, and receive push notificationseven without an internet connection. Data is cached locally and synced automatically when connectivity is restored. This is especially valuable for brokers touring properties in remote areas or international travelers.

Partnerships for Global Reach

CoStar partners with local real estate associations and technology providers worldwide to ensure seamless integration. For example, in Germany, CoStar integrates with the national property registry (Grundbuch), and in Singapore, it connects with the Urban Redevelopment Authority (URA) database. These partnerships enhance data accuracy and reduce the need for manual verificationmaking support interactions faster and more effective.

FAQs

Q1: What is the official CoStar Group Inc. customer support phone number?

The official U.S. and Canada toll-free number is 1-800-483-1090. For international callers, refer to the Worldwide Helpline Directory above for country-specific numbers.

Q2: Is CoStar customer support available 24/7?

Standard support is available MondaySaturday during business hours in each region. However, CoStar offers a 24/7 emergency support line (1-888-884-2782) for critical system outages or data integrity issues that impact business operations.

Q3: How do I report incorrect property data on CoStar?

Call support, use live chat, or email support@costar.com with the property ID, address, and details of the error. CoStars data validation team will verify and correct the record within 2448 hours.

Q4: Can I get training on how to use CoStars advanced analytics tools?

Yes. All subscribers have access to free online training videos via the CoStar Help Center. Enterprise clients receive complimentary quarterly virtual or in-person training sessions with a certified CoStar trainer.

Q5: What should I do if I suspect a scam calling as CoStar support?

Never provide personal or account information to unsolicited callers. Hang up and call CoStar directly using the official numbers listed on www.costar.com. Report suspicious calls to security@costar.com.

Q6: Does CoStar offer support for Apartments.com or LoopNet users?

Yes. CoStar Group Inc. owns Apartments.com and LoopNet, and all customer support inquiries for these platforms are handled through the same official channels. Simply specify which service youre using when you contact support.

Q7: How long does it take to get a response via email?

Standard subscribers: 12 business days. Professional and Enterprise subscribers: under 24 hours. Urgent issues are prioritized based on subscription tier and impact level.

Q8: Can I access CoStar support if Im not a subscriber?

No. CoStars customer support services are exclusive to paid subscribers. However, you can request a free demo or trial at www.costar.com/demo to experience the platform and support offerings before purchasing.

Q9: Does CoStar offer multilingual support?

Yes. Support agents are available in English, Spanish, German, French, Japanese, and Portuguese during regional business hours. All help center content is available in these languages.

Q10: Whats the best way to contact CoStar for a billing question?

For billing inquiries, call the main support line (1-800-483-1090) and select the billing option. Alternatively, log in to your account and navigate to Billing & Subscriptions to view invoices or submit a support ticket directly from your dashboard.

Conclusion: Empower Your Real Estate Business with Trusted CoStar Support

CoStar Group Inc. is not just a data providerits a mission-critical partner for real estate professionals worldwide. The accuracy of your investment decisions, the efficiency of your operations, and the credibility of your client reports all depend on the integrity of the data you use. And behind every data point, every chart, every market forecast, is a team of dedicated support specialists ready to ensure you never miss a beat.

By using only the official CoStar customer support numbers and channels outlined in this guide, you protect yourself from scams, ensure rapid resolution of issues, and unlock the full potential of your CoStar subscription. Whether youre a broker closing a $50 million deal, a lender underwriting a portfolio, or a developer planning a new mixed-use tower, CoStars support team is there to keep you informed, connected, and confident.

Remember: In commercial real estate, time is capital. A delayed data correction, a misinterpreted lease term, or a system outage can cost you thousandsor millions. Dont gamble with unofficial sources or unverified contacts. Always reach out through the official CoStar Group Inc. channels.

Call. Chat. Email. Or visit the Help Center. No matter how you choose to connect, youre not just getting customer serviceyoure gaining access to the most comprehensive real estate intelligence network on the planet.

CoStar Group Inc. Powering Real Estate Decisions Since 1987.