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Costar Research Analyst Interview Questions

The questions to prepare for a Costar Research Analyst interview. Questions from real interview reports rank first. Updated weekly.

50questions
~7htotal time
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1
Product SenseStart here. 3 questions · ~24 min
CoStar Solves CRE Pain PointsMedium

Evaluates your grasp of customer problems CoStar addresses with its data and analytics.

User NeedsPain PointsUse CasesCostar
Your WeaknessesEasy

Tests self-awareness and whether you can frame improvement areas credibly.

User ResearchUser NeedsCostar
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2
Metrics3 questions · ~24 min
Key Metrics for Real Estate MarketsMedium

Assesses your understanding of which metrics matter for commercial real estate analysis.

Lagging IndicatorsKPIsLeading IndicatorsCostar
Define Success at CoStarMedium

Assesses how you set goals and measure impact in CoStar's research work.

North Star MetricKPIsDiagnosisCostar
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3
Strategy3 questions · ~24 min
Aggregate and Analyze Real Estate DataMedium

Assesses your end-to-end thinking for aggregating and analyzing CRE data for insights.

EstimationCompetitive AnalysisMarket SizingCostar
Why You Want to Work HereEasy

Tests motivation and your ability to articulate a clear fit for the Research Analyst role.

Product-Market FitCompetitive AnalysisCostar
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4
Behavioral & Leadership38 questions · ~304 min
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5
More topics3 questions · ~24 min
Data Collection and Validation ExperienceEasy

Explain how you have collected data from source systems and validated it before loading it into analytics tables.

ToolsData ModelingQualityCostar
Handle Datasets With Missing EntriesMedium

Evaluates your data cleaning and handling strategy for incomplete research datasets.

Data WranglingCase WhenQualityCostar
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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Top Customers by Sales RevenueEasy
Practice
Practice drill

Use GROUP BY and SUM to rank the top 10 customers by total revenue from a single sales table.

RankingGroup ByAggregationsHousecall ProEquifaxXYZ
SQL Average Selling PriceMedium
Practice
Practice drill

Calculate weighted average selling prices by product using a date-range join, aggregation, and NULL handling.

leetcodesqlCostarCostar Group
Basic SQL and String ReverseEasy
Practice
Practice drill

Reverse Costar property search strings with PostgreSQL and flag rows whose stored expected value does not match.

sql queriesstring manipulationCostar
The finish line: interview-readyComplete all 50 questions plus 3 hands-on drills to finish this plan.