CoStar Group Inc (CSGP) fair value: what the stock is really worth
As of Nov 5, 2026: fair value (intrinsic value) of CoStar Group Inc stock $6.09, price $32.05, that is 81.0% below the price, quality 56 out of 100. Rating: strongly overvalued. Calculated from audited financials with 13 of our 26 valuation models and 37 quality factors, updated daily.
Keep an eye on it?Free in your watchlist: 5 stocks without an account, 10 with oneYes, for free
69 individual criteria per stock, every one traceableSee the method →
Price vs Fair Value
White line = price, green steps = our fair value per fiscal year. As of Nov 6, 2026.
How to read this chart
60‑month range $26.95 – $99.74 · fair‑value band $3.96 – $10.24 · the $32.05 price screens above the $6.09 fair value. Green steps = our fair value per fiscal year (point-in-time, no hindsight). As of Nov 6, 2026.
Follow CoStar Group in your weekly email
Every Wednesday you see whether CoStar Group is on track or worth a review, plus price against fair value. Free, up to 3 stocks.
We send you a confirmation link. Unsubscribe with one click.
CoStar Group, Inc. provides information, analytics, and online marketplace services to real estate and related business communities in the United States, Australia, Canada, Europe, the Asia Pacific, and Latin America.
Show moreShow less
It offers CoStar Property that provides inventory of office, industrial, retail, multifamily, hospitality, and student housing, and land properties; CoStar Leasing, a data on lease transactions and tools to manage user-entered lease data; CoStar Sales, a database of commercial real estate sales transactions; CoStar Owners provides detailed portfolio information; CoStar Markets to view and report on market and submarket trends; and CoStar Tenant that provides tenant information.
The company also provides hospitality benchmarking that allows hotels to measure performance against competitors; Debt Solutions, a tool for lenders to manage loan portfolios and risk; and real estate and lease management technology solutions, such as lease administration, lease accounting, and transaction management services.
In addition, it offers Apartamentos.com, an apartment marketing sites; LoopNet.com, a commercial property marketing sites; Homes.com, a home for sale listings site; Ten-X, an online auction platform for commercial real estate; Land.com, a marketplace for rural land sales; and BizBuySell.com, a marketplace for operating businesses and franchises for sale.
It serves sales, leasing, and mortgage brokers; property, real estate investment trust, insurance companies, and asset managers; and government agencies, property owners, mortgage-backed security issuers, appraisers, design and construction professionals, pension fund managers, real estate developers, reporters tenant vendors, bankers, building services vendors, mortgage bankers, communications providers, retailers, institutional advisors, hospitality owners, investors, and real estate agents.
The company was founded in 1986 and is headquartered in Arlington, Virginia.
Stock analysis
CoStar Group Inc (CSGP) currently trades at $32.05, while our model-based Fair Value estimate is $6.09, 81% below the price, so the stock looks overvalued today.
Show more
Valuation
Bull case: the Economic Profit group reads highest at a median of $12.53 per share, and 0 of the 13 models we run sit above the $32.05 price.
Bear case: the Asset-Based group reads lowest at $2.68, and 13 of the 13 models stay below the price. Data coverage for this calculation is low.
Scenario range: $3.96 (bear) to $10.24 (bull), the price of $32.05 sits above it. Bear and bull are the same models on cautious and optimistic assumptions, a range, not a price target.
Quality & growth
The Quality Score stands at 56/100 (solid quality), in the Real Estate sector.
Mixed Growth: Revenue is growing, but margins or cash flow do not fully confirm the trend.
CoStar Group Inc reported revenue of $3.2B in FY2025 versus $1.9B in FY2021, a compound +13.7%/yr. Reported net income was $7.0M in FY2025, compounding −60.7%/yr from FY2021.
Key figures
Market cap $13.0B Large · P/E ratio 74.5 · P/S ratio 3.53 · EPS (TTM) $0.4300 · Net margin 4.9% · Return on equity 2.2% · Return on assets (EBIT) 2.8% · Operating margin 8.8%.
Competitive moat
Our AI-assisted moat analysis scores the competitive advantage at 36 out of 100 (low confidence).
What moves the price
The share trades about 55% below its 52-week high and 19% above its 52-week low, currently below its 200-day average.
For context, the median of 10 Real Estate peers we cover trades at −16% fair-value upside, at −81%, CSGP screens richer than that median.
Fair Value models
The price assumes far more growth than our models allow for, so the models scatter widely ($0.2900 to $12.53). Read the Fair Value as a cautious anchor, not a price target; the Growth Forecast section shows what the price assumes.
Bear$3.96Fair Value $6.09Bull$10.24
Price $32.05 · Downside -81.0%
Model ⓘEach model values the company its own way (discounted cash flow, earnings, assets, dividends). The fair value above starts from their evidence-weighted blend, not from a single model. In cyclical trough or peak years, after dilution or a stock split it is adjusted afterwards, so it can sit above or below the models. Based on fiscal year 2025 figures (about 10 months old). Earnings retained since then ($0.3652 per share) are deliberately not added.Bear ⓘBear = the cautious scenario: the same model computed with conservative anchors (lower growth, margins and valuation multiples). Together with Bull it frames a plausible valuation range, not a price target.BaseBull ⓘBull = the optimistic scenario: the same model computed with favourable anchors (higher growth, margins and valuation multiples). Together with Bear it frames a plausible valuation range, not a price target. If a model's bull case is above four times its base value, the table shows that limit with a > sign (like the overall Bull above): beyond it no assumption holds.Coverage ⓘCoverage = how well-backed THIS model's estimate is for this stock (0–100): how complete and reliable its input data are, and how well the model fits the company. The final Fair Value is an evidence-weighted blend, so better-evidenced models count more. Green ≥70, amber 50–69, grey below 50.
In the last 6 months, one officer or director bought shares worth $2.5M, on Aug 4, 2026. Over the same period, 2 people sold shares worth $253,110.
SaleCynthia Cammett CannChief Accounting Officer2× since Nov 13, 2025: 6,629 shares, avg. $41.34$274,017Aug 7, 2026
SaleJohn W HillDirector2× since Nov 13, 2025: 5,750 shares, avg. $45.26$260,265Aug 5, 2026
BuyAndrew C FloranceFounder and CEO, Director3× since Feb 27, 2026: 210,450 shares, avg. $35.57$7.5MAug 4, 2026
BuyLouise S SamsDirector1,000 shares at $48.36$48,360Mar 6, 2026
BuyRachel C GlaserDirector1,000 shares at $44.94$44,940Mar 2, 2026
BuyFrederick G. SaintPresident, Marketplaces20,000 shares at $45.33$906,600Mar 2, 2026
Plus 12 other filings such as grants, option exercises or tax withholding. They are not market purchases or sales.
Sales are often planned (taxes, diversification, 10b5-1 plans). Purchases with their own money are seen as the stronger sign. For information only: not part of the quality score or Fair Value.
Growth Quality ⓘGrowth is valuable only when reinvestment earns attractive returns (Aswath Damodaran): sustainable growth depends on return on capital, reinvestment and efficiency. Basis: total company revenue over the periods shown on the cards (3Y/5Y/all years), not per share, so a merger can show up as a growth jump; per-share earnings growth is in the value-creation card.85/100
Revenue is growing, but margins or cash flow do not fully confirm the trend.
Revenue growth 1 year
+18.7%
Revenue growth 3 years ⓘMeasures the company's TOTAL revenue from reported annual statements: compound average growth per year (CAGR) from the fiscal year 3, 5 or N years back to the most recent comparable fiscal year. Not per share: buybacks do not change this number, and a merger can appear as a growth jump. Per-share growth (which does include buybacks) is in the value-creation card.
+14.2%
Revenue growth 5 years ⓘMeasures the company's TOTAL revenue from reported annual statements: compound average growth per year (CAGR) from the fiscal year 3, 5 or N years back to the most recent comparable fiscal year. Not per share: buybacks do not change this number, and a merger can appear as a growth jump. Per-share growth (which does include buybacks) is in the value-creation card.
+14.4%
Start year 2020 (pandemic). Over 10 years: +16.4% a year
Revenue growth 28 years ⓘMeasures the company's TOTAL revenue from reported annual statements: compound average growth per year (CAGR) from the fiscal year 3, 5 or N years back to the most recent comparable fiscal year. Not per share: buybacks do not change this number, and a merger can appear as a growth jump. Per-share growth (which does include buybacks) is in the value-creation card.
+24.0%
’14
’15
’16
’17
’18
’19
’20
’21
’22
’23
’24
’25
What shareholders gained per year (last 5 years) ⓘWhat the business itself delivers per year: earnings growth per share plus the dividend yield. This is what you get IF the market keeps valuing the stock the same way: it contains no assumption about the market changing its mind. Computed per share, so buybacks count and a merger does not pass as growth. For a company that pays no dividend it is pure earnings growth per share. Period: earnings growth per share as CAGR over the last 5 reported fiscal years (annual statements), plus the current dividend yield. The start value is the median of the three years around the start, so a single crisis year (a pandemic or a write-down) does not distort the rate. Basis: adjusted.
−47.2%
Earnings growth per share plus dividend.
Earnings per share, growth per year−47.2%
Dividend (yield on the price)0.0%
Pace: 5 vs 10 years ⓘTwo data points, not a trend model: earnings growth per share over the last 5 fiscal years against the last 10. Labelled "steady" when both rates are within 3 percentage points of each other, otherwise picking up or flattening. Shown only when ten years of history exist.−53.2% vs −22.2%, slowing
Profit margin 2020 to 2025 ⓘOperating margin then vs now, from reported annual statements. A falling margin after a boom year is the classic peak-earnings signal: the growth rate then leans on an inflated base.17% → −2%
Pace: the 5-year rate starts in 2020 (pandemic)
Growth Forecast
A lot of optimism in the price
The price assumes more growth than the company has delivered so far and more than analysts expect.
What the price assumes ⓘThis turns our valuation around: instead of asking what the share is worth, it asks what growth the current price requires. It uses the cash the company keeps after all spending (free cash flow), the same discount rate as our models, five years of growth, then slowing evenly to 2 % a year by year ten. Compared with the analysts' sales forecasts extended to the same five years (at least three analysts, for context only, it does not enter the Fair Value): within 3 percentage points counts as "in line" (amber), below that little optimism (green), above that a lot of optimism (red).
+61.3%
Yearly growth needed for the next five years to justify today's price.
What forecasts expect ⓘAnalysts publish sales forecasts for the next two fiscal years. For the years after that, growth slows evenly to 2 % a year by year ten (2 % is the long-run rate our models use). Projected years are marked as such.
+10.5%
Yearly sales growth analysts expect, extended to five years.
After inflation (USA: IMF forecast 2.4% a year to 2030, 3.1% from 2016 to 2025) that is about +57.6% a year for the price and +7.9% for the forecasts.
News mood ⓘNews mood, the average tone of recent news (100 articles), rated against how stocks are usually covered. 🚀 Hype = unusually upbeat · 🙂 Positive = above average · 😐 Neutral = typical · 🙁 Negative = below average · 😨 Very negative = unusually downbeat. It reflects the tone of coverage, not our valuation.Positive
Recent news coverage is more positive than average.
AI conclusion: The entrenched data network provides a key strength through broad subscription adoption, while persistently low net margins and softer real estate activity represent the main weakness.
Main risk: Ongoing class-action and competitor antitrust suits could force changes to exclusive contracts or data practices and expose the company to remedies that increase competition or costs for its listing and information services.
Bull case: CoStar could leverage its proprietary data assets and AI investments to deepen product differentiation and retain or expand its role as the industry standard even amid legal or competitive pressures.
Bear case: Sustained antitrust remedies or successful cheaper alternatives could erode customer exclusivity and data network effects, leading to slower subscription growth or margin compression over the cycle.
CoStar has secured subscriptions from every major commercial real estate brokerage in Canada, underscoring its role as the standard for property data and analytics. At the same time, office leasing volumes continue to lag historical levels despite some recovery. Our models see the stock as overvalued. Will the entrenched data network sustain steady subscription growth through the cycle, or will softer real estate activity weigh more heavily on results?
Price, fair value, quality and upside side by side.
Free, no sign-up
Peer GroupⓘHow this stock ranks against its industry: the green marker is this stock, the band is the typical 25–75% peer range, and the tick is the median.Real Estate Services · 473 stocks
Beats the industry median on 3/14 measures
Overall it trails its industry peers.
Valuation
Quality Score56 · Below median
Fair Value upside−81.0% · Bottom 25%
Profitability
Return on equity (12 months)2.2% · Below median
Return on assets0.1% · Bottom 25%
Net margin (12 months)4.9% · Below median
Operating margin (12 months)8.8% · Below median
Growth and dividend
Revenue growth (quarter YoY)14.2% · Above median
Balance sheet
Debt / equity0.12× · Below median
Valuation Multiplesvs Real Estate Services median · lower = cheaper
For bloggers, editors and developers: paste this into your site or blog (a “Custom HTML” block in WordPress), it shows the current fair value and links back here. Free, plain HTML, and welcome. Full data streams (CSV/JSON) at /developers.
Cite: Fair Value Calculator (2026). "CoStar Group Inc Fair Value". https://www.fairvalue-calculator.com/stock/CSGP
Frequently asked questions
Is CoStar Group Inc (CSGP) overvalued or undervalued?
As of Nov 6, 2026, our model estimates a fair value of $6.09 versus a price of $32.05, about 81% lower (overvalued).
What is the fair value of CSGP?
Our model-based fair value for CoStar Group Inc is $6.09 (as of Nov 6, 2026), built from audited fundamentals. The current price: $32.05.
What is the quality score of CSGP?
CoStar Group Inc has a Quality Score of 56/100. It measures business quality (profitability, growth, cash flow, balance-sheet strength, investment discipline, share issuance). Market factors such as price momentum and volatility do not enter the number; they are shown separately in the detail view.
What is the price target for CoStar Group Inc (CSGP)?
Our model-based price target is the fair value of $6.09 (as of Nov 6, 2026) from 13 valuation models. Cautious scenario $3.96, optimistic scenario $10.24. It is a calculation from audited fundamentals, not an analyst target.
What is the CoStar Group Inc stock forecast for 2026?
Our models put fair value at $6.09, about 81% lower versus a price of $32.05 (overvalued). Cautious scenario $3.96, optimistic scenario $10.24. The calculation is refreshed regularly with new filings.
What is the revenue of CoStar Group Inc (CSGP)?
CoStar Group Inc reported trailing-twelve-month revenue of about $3.7B (latest available figure, as of Nov 6, 2026).
What growth is priced into CoStar Group Inc (CSGP)?
For today's price to be fair in a discounted-cash-flow model, CoStar Group Inc would have to grow free cash flow by +61.3 % per year for five years (discount rate 8.8 %, then slowing evenly to 2 % perpetual growth by year ten). Over the last 5 years revenue grew +14.4 % per year. As of Nov 6, 2026.
What discount rate (WACC) does the fair value of CSGP use?
Our models discount CoStar Group Inc at 8.8 %: a base by market capitalisation (large), damped by beta 0.80, country premium for USA. The same rate applies in all 26 models.
What is a reverse DCF?
A reverse DCF turns the usual calculation around. Instead of deriving a value from assumptions, it takes today's price as given and asks: what free-cash-flow growth would a company have to deliver for exactly this price to be fair? The result is not a forecast but the expectation already priced in. For CoStar Group Inc that is +61.3 % per year a year over ten years, using the same discount rate (8.8 %) and the same formula as our fair value.
How much growth has CoStar Group Inc (CSGP) delivered so far?
Over the past 5 years revenue at CoStar Group Inc grew +14.4 % a year. The price currently implies +61.3 % per year free-cash-flow growth a year. Comparing the two shows how much confidence is in the price: if it demands more than has been delivered, the business has to accelerate for the maths to work.
How fast is the sector of CoStar Group Inc (CSGP) growing?
The median revenue growth in the sector is +2.8 % a year. That is the yardstick for the growth priced into CoStar Group Inc (+61.3 % per year a year): it shows whether the expectation is within the usual range or beyond it.
What is the free cash flow yield of CoStar Group Inc (CSGP)?
The free-cash-flow yield on the price is 0.32 %: that much free cash flow CoStar Group Inc produces per unit of market value. When it exceeds the discount rate of our models (8.8 %), the business already earns more than its cost of capital demands, and the price needs little additional growth.
What is the intrinsic value of CoStar Group Inc (CSGP)?
Intrinsic value and fair value mean the same thing: what the business is worth on its numbers, independent of the share price. For CoStar Group Inc it is $6.09 per share (as of Nov 6, 2026), against a price of $32.05. It is the blended result of 13 valuation models (cash flow, earnings, asset, dividend).
Is CoStar Group Inc stock overvalued or undervalued in 2026?
As of Nov 6, 2026, CSGP trades above its calculated fair value: price $32.05, fair value $6.09, a gap of about −81% (overvalued). The calculation is refreshed with each new quarterly report, so the verdict can change during the year.
Is fair value the same as the market price of CSGP?
No. The price is what the market pays today ($32.05); the fair value is what the company's own numbers justify ($6.09). For CoStar Group Inc the two are $25.96 per share apart. That gap is exactly why we show both numbers side by side.
How much is CoStar Group Inc worth?
The market values CoStar Group Inc at about $13.0B (market capitalisation, as of Nov 6, 2026). Per share that is $32.05; our models calculate a fair value of $6.09 per share.
What do the bullish and bearish scenarios say about CSGP?
Our models span a range for CoStar Group Inc: cautious scenario $3.96, base $6.09, optimistic $10.24 per share (as of Nov 6, 2026, price $32.05). The range comes from different growth and margin assumptions, not from analyst opinions.
What is the P/E ratio of CSGP?
CoStar Group Inc trades at a price-to-earnings ratio of 74.5 (as of Nov 6, 2026). A P/E on its own says little: it compares the price with ONE year of profit, while our fair value of $6.09 is built from several models across several years. Median P/E at fiscal year-end, 5 fiscal years (2021 to 2025), reported earnings, FY2025 ex one-offs: 106.5. Other multiples: PEG 0.1, P/B 1.6, P/S 3.5, EV/EBITDA 21.2.
What is the PEG ratio of CSGP?
The PEG ratio of CoStar Group Inc is 0.09 (P/E divided by earnings growth, as of Nov 6, 2026). That is below 1, so growth is priced more cheaply than the earnings multiple alone suggests.
How solid is the balance sheet of CoStar Group Inc (CSGP)?
Balance-sheet figures for CoStar Group Inc (as of Nov 6, 2026): return on equity 2.2%, debt of 0.12 per unit of equity. They feed the Quality Score of 56/100, which measures business quality independently of the share price.
How far is CSGP from its 52-week high?
CoStar Group Inc trades at $32.05, about 55% below its 52-week high of $70.44 and 19% above the low of $26.95 (as of Nov 5, 2026). Distance from the high says nothing about value: that is what the fair value of $6.09 is for.
Which stocks are comparable to CoStar Group Inc?
From the same area (Real Estate) we also value CBRE Group, Cellnex Telecom, S.A, KE Holdings, Swire Properties Limited, among others. Each of them has its own fair-value calculation on this site using the same models, so the comparison is like for like.
Is CoStar Group Inc stock attractive at the current price?
The data as of Nov 6, 2026: price $32.05, calculated fair value $6.09 (−81%), Quality Score 56/100, from 13 models. Whether that fits your horizon and risk tolerance is your call. We provide the calculation, not investment advice.
How is the fair value of CSGP calculated?
We run CoStar Group Inc through 13 models from four families: discounted cash flow, earnings models, asset and balance-sheet models, and dividend models. Every model gets the same audited fundamentals; the result is the weighted average of $6.09, with the spread shown as a cautious and an optimistic scenario.
Is it still worth investing in stocks now?
The global stock market currently sits 15.5% above its aggregate fair value. CoStar Group Inc itself currently trades above fair value. An expensive market is no reason to stay out and no reason to buy everything at once: keep a broad savings plan running, buy single stocks only with money you can do without, and hold part of your money liquid while the market is high. The full picture including sectors is on is it worth investing now.
What is the share price of CoStar Group Inc (CSGP)?
The closing price on Nov 5, 2026 was $32.05. Our model-based fair value is $6.09, about 81% lower (overvalued). We carry closing prices from our data provider, not a live tick.
What should I pay attention to with CoStar Group Inc right now?
The price sits above even our optimistic bull case ($10.24). The favourable scenario is already priced in. The large gap to fair value rests on thin data (low evidence): fewer applicable models and a shorter history. Read it with extra caution. Solid but not exceptional quality (56/100) and above fair value, neither a clear bargain nor a standout compounder. A fairly wide model range ($3.96 to $10.24) leaves room in how you read the outcome.
Where does the earnings growth of CoStar Group Inc (CSGP) come from?
Earnings per share at CoStar Group Inc grew +14.1 % a year from 2014 to 2025. Broken into its drivers: revenue per share +13.1 %, EBIT margin −11.7 %, tax rate +1.7 %, residual (interest, one-offs) +12.4 %. The four rates multiply to the earnings growth rate, they do not add up. Start and end are three-year averages so a single exceptional year does not distort the result.
Key figures of CoStar Group Inc
How large is the market capitalisation of CoStar Group Inc (CSGP)?
The market capitalisation of CoStar Group Inc is $13.0B. The stock-market value of the whole company: share price times number of shares. It is what the market asks for the entire business today.
What is the P/S ratio of CoStar Group Inc (CSGP)?
The price-to-sales ratio of CoStar Group Inc is 3.53 (last twelve months). Price to sales: market value relative to yearly revenue. Useful when profit is thin or distorted.
What are the earnings per share of CoStar Group Inc (CSGP)?
Earnings per share at CoStar Group Inc are $0.4300 (price ÷ EPS = P/E 74.5). Earnings per share over the last twelve months: total profit spread across every single share.
What is the net margin of CoStar Group Inc (CSGP)?
The net margin of CoStar Group Inc is 4.9% (last twelve months). How much of every unit of revenue ends up as profit. 10% means 10 cents of profit per dollar of sales.
What is the return on equity of CoStar Group Inc (CSGP)?
The return on equity (ROE) of CoStar Group Inc is 2.2% (last twelve months). Profit relative to shareholders' equity, how efficiently the company works with its owners' money.
What is the EBIT return on assets of CoStar Group Inc (CSGP)?
On an EBIT basis the return on assets of CoStar Group Inc is 2.8% (avg 5y). Operating profit (EBIT) relative to everything the company owns, as a multi-year average. It describes the business model rather than one good or bad year.
What is the operating margin of CoStar Group Inc (CSGP)?
The operating margin of CoStar Group Inc is 8.8% (last twelve months). Profit from the core business (before interest and taxes) relative to revenue.
How fast is revenue growing at CoStar Group Inc (CSGP)?
Revenue at CoStar Group Inc is growing +14.2% versus a year earlier (3y avg +14.2%). How much revenue grew versus a year earlier (YoY). The 3-year average next to it puts the single year in context.
How fast are earnings growing at CoStar Group Inc (CSGP)?
Earnings per share at CoStar Group Inc are growing +12.6% versus a year earlier. How much earnings per share grew versus a year earlier.
How much net cash does CoStar Group Inc (CSGP) hold?
CoStar Group Inc holds more cash than debt, $589M net (fiscal year 2025). The company holds more cash than debt, a safety cushion.
Free · no account needed
Watch CoStar Group Inc in the live analysis
One click puts CoStar Group Inc on your watchlist: fair value and trend at a glance, plus comparison, the diversification check and the 27,000+ stock screener.
Thin data
Nov 6, 2026