CoStar Group Inc (CSGP) (Q3 2026) Earnings Call Highlights: Record EBITDA and Margin
CoStar Group (CSGP) reported Q3 2026 revenue of $952M, up 14% YoY, with record EBITDA of $229M. Full-year EBITDA guidance raised to $830M. Growth seen in LoopNet and Homes.com, but net new bookings fell. Sales force reduced by 10% YoY. Vexcel acquisition noted for synergies. Homes.com losses expected to reach $550M. CEO highlights sales capacity and cost efficiency opportunities.
How this was made

The 30-second read
Why it matters
Traders can update expectations for 2026 EBITDA and the 2027 growth mix (bookings reacceleration versus margin expansion) based on raised EBITDA guidance, identified cost-efficiency opportunities, and explicit negatives in net new bookings and revenue guidance ex-Zonda.
Market read
Company-specific earnings and guidance details (revenue, adjusted EBITDA, margin, bookings, and 2026 guidance changes) are directly relevant for near-term positioning in CSGP.
What to watch
Sales force capacity constraints and churn dynamics by brand (Homes.com inside sales churn, shift to field sales) may be the key driver of whether margin gains translate into sustained top-line growth.
Background
The piece summarizes CoStar Group’s Q3 2026 earnings call, highlighting record profitability, guidance changes, and operational drivers across its major brands (Apartments.com, LoopNet, Homes.com, Domain).
Ticker impact
CoStar reported Q3 revenue up 14% to $952M and record adjusted EBITDA $229M, while raising 2026 adjusted EBITDA guidance midpoint to $830M.
Likely two-sided reaction, with upside bias from raised EBITDA guidance and margin expansion, tempered by bookings and revenue softness.
The article contains multiple company-specific, decision-relevant datapoints: raised full-year EBITDA guidance, record EBITDA margin, and explicit negatives on bookings and revenue guidance excluding Zonda.
Market effects
Signals continued operating leverage potential in real estate listings/prop-tech, but also highlights demand sensitivity in transaction volumes and multifamily.
UK and Canada renewal strength (94% UK) suggests resilience in some international markets despite weaker Australia housing conditions.
Cross-sell and data-synergy narrative from Vexcel supports broader adoption of aerial imagery and data products across geographies.
Counterpoint
The raised EBITDA target may rely on cost actions and integration synergies, while bookings and revenue softness (including Homes.com losses) could delay the revenue reacceleration investors expect.
Key entities
- companyCoStar Group Inc
Reported Q3 results, raised full-year 2026 adjusted EBITDA guidance, and discussed sales capacity, bookings, and the Vexcel acquisition.
- acquired businessVexcel
Aerial imagery business CoStar is acquiring, discussed in terms of data rights, integration, and incremental CapEx.
- executiveAndy Florance
CEO who addressed bookings capacity, revenue reacceleration expectations, and multifamily strategy.
- executiveRobin Rossmann
CFO who discussed guidance, cost savings breakdown, and multifamily outlook assumptions.

