Zumper vs. CoStar Group
Side-by-side across both vendors’ full G2 portfolios — reviews, ratings and category coverage aggregated to the company, not a single product.
| Metric | Zumper | CoStar Group |
|---|---|---|
| Avg. rating | 4.2 | 3.7 |
| Total reviews | 36 | 193 |
| Review growth (QoQ) | — | — |
| Products on G2 | 1 | 6 |
| Categories covered | 2 | 6 |
| Best category rank | #10 in Multiple Listing Service (MLS) | #5 in Multiple Listing Service (MLS) |
| Small Business | 91.7% | 47.3% |
| Mid-Market | 8.3% | 32.4% |
| Enterprise | 0.0% | 20.2% |