What are the key differences between Apartments.com and CoStar?

Compare Apartments.com and CoStar side by side on Lunoo to see detailed feature differences, AI scores, and expert analysis.

How are Apartments.com and CoStar scored?

Apartments.com has an AI score of 8.1/10 and CoStar has an AI score of 8.4/10. Scores are based on category fit, feature coverage, pricing signals, public reception, and recency.

Apartments.com vs CoStar 2026 - Compared

Apartments.com

CoStar

WINNER CoStar

CoStar edges ahead with a score of 8.4/10 compared to 8.1/10 for Apartments.com. While both are highly rated in their re...

Apartments.com

8.10 Great

Real Estate Get Apartments.com open_in_new

emoji_events WINNER

CoStar

8.38 Great

Real Estate Get CoStar open_in_new

psychology AI Verdict

CoStar edges ahead with a score of 8.4/10 compared to 8.1/10 for Apartments.com. While both are highly rated in their respective fields, CoStar demonstrates a slight advantage in our AI ranking criteria. A detailed AI-powered analysis is being prepared for this comparison.

emoji_events Winner: CoStar

verified Confidence: Low

Ready to decide? Get CoStar arrow_forward

description Overview

Apartments.com

Apartments.com is a website and mobile app providing listings of rental apartments, houses, and other properties across the United States and internationally.

CoStar

CoStar Group provides commercial real estate data, analytics, and online marketplaces—including LoopNet and Apartments.com—to investors, lenders, brokers, and property managers globally.