Thematic Exposure -- 7/10
Zillow is the dominant US real estate search portal with ~50%+ of all real estate web traffic and 221M average
monthly unique users. The company is executing a Housing Super App strategy that vertically integrates search,
agent matching, mortgage origination, and transaction workflows. Enhanced Markets now represent 44% of connections
(up from 21% a year ago). Rentals revenue grew 39% in FY2025 with 63% listing share. The score is capped at 7
because revenue remains heavily tied to a depressed US housing cycle (existing home sales ~4.1M vs. ~6M
normalized), and mortgage vertical integration is still early ($199M FY2025 revenue).
Weight: 25%
Oligopoly Hard Gate: PASS -- Dominant Real Estate Portal
>50% US Real Estate Portal Traffic -- 221M Monthly Uniques -- 63% Rental Listing Share -- 90% Home Tour Software
Zillow is the dominant firm in US real estate search with more than 50% of all portal visits --
over 2x the next competitor. 80% of traffic is organic/direct, indicating deep brand moat that cannot be
replicated via paid advertising.
Competitive threats are diminishing, not growing. Homes.com (CoStar) captured only single-digit share despite $3B+ cumulative investment. CoStar is now slashing Homes.com spending by $350M in 2026 (~35% cut) and will continue reducing through 2030 -- effectively conceding defeat. Redfin (~10M monthly visitors) was acquired by Rocket Companies but starts from a dramatically smaller traffic base.
Agent software penetration reinforces the moat: ShowingTime powers ~90% of all US home tours; Follow Up Boss is used by 80%+ of top-volume agent teams. Agents using at least one Zillow product touch ~80% of residential transactions.
Oligopoly gate: PASS. Zillow exceeds the 50% threshold in real estate portal traffic with widening competitive leads across all key metrics. This is a dominant-firm structure with weakening challengers.
Competitive threats are diminishing, not growing. Homes.com (CoStar) captured only single-digit share despite $3B+ cumulative investment. CoStar is now slashing Homes.com spending by $350M in 2026 (~35% cut) and will continue reducing through 2030 -- effectively conceding defeat. Redfin (~10M monthly visitors) was acquired by Rocket Companies but starts from a dramatically smaller traffic base.
Agent software penetration reinforces the moat: ShowingTime powers ~90% of all US home tours; Follow Up Boss is used by 80%+ of top-volume agent teams. Agents using at least one Zillow product touch ~80% of residential transactions.
Oligopoly gate: PASS. Zillow exceeds the 50% threshold in real estate portal traffic with widening competitive leads across all key metrics. This is a dominant-firm structure with weakening challengers.
Revenue by Segment ($M, Quarterly)
| Segment | Q1 24 | Q2 24 | Q3 24 | Q4 24 | Q1 25 | Q2 25 | Q3 25 | Q4 25 | YoY Q4 |
|---|---|---|---|---|---|---|---|---|---|
| Residential | $393 | $409 | $405 | $387 | $417 | $434 | $435 | $418 | +8% |
| Rentals | $97 | $117 | $123 | $116 | $129 | $159 | $174 | $168 | +45% |
| Mortgages | $31 | $34 | $39 | $41 | $41 | $48 | $53 | $57 | +39% |
| Other | $8 | $12 | $14 | $10 | $11 | $14 | $14 | $11 | +10% |
| Total | $529 | $572 | $581 | $554 | $598 | $655 | $676 | $654 | +18% |
FY2025 total revenue: $2.58B (+16% YoY). For Sale revenue: $1.9B. Rentals revenue: $630M.
Data sourced from Daloopa.
Monthly Unique Users
221M
Q4 2025 avg, +8% YoY
Enhanced Markets %
44%
Of connections, up from 21% YoY
Rental Listing Share
63%
Up from 54% in 2024
ZHL Purchase Volume
$1.5B
Q4 2025, +67% YoY
Real Estate Portal Competitive Landscape
| Competitor | Est. Monthly Traffic | Positioning | Threat Level |
|---|---|---|---|
| Zillow Group | 221M uniques | Dominant portal, Housing Super App strategy, integrated search + agent + mortgage + rentals | -- |
| Realtor.com (News Corp) | ~30M | Official NAR-affiliated portal; smaller traffic base, limited vertical integration | Low |
| Redfin (Rocket Companies) | ~10M | Acquired by Rocket for $1.75B in 2025; brokerage + mortgage combo but dramatically smaller traffic | Medium |
| Homes.com (CoStar) | Single-digit share | $3B+ invested, minimal share gained. Activists called it a "fiasco." Slashing spend by $350M in 2026 | Low (Fading) |
Zillow commands >50% of US real estate portal traffic with 80% organic/direct visits. The most credible
challenger (CoStar/Homes.com) is retrenching after $3B+ of investment yielded minimal share. Competitive
threats are diminishing, not growing.
Thematic Pillars
Pillar 1: Digital Real Estate Marketplace Dominance (Strong)
Zillow is the undisputed #1 real estate portal in the US with widening traffic leads. The CoStar/Homes.com
competitive threat is receding as CoStar slashes spending. Rocket/Redfin acquisition creates a new
competitor but Redfin starts from a much smaller traffic base (~10M vs. 221M). 80% direct/organic traffic
indicates brand strength that is extremely difficult to replicate via paid advertising.
Pillar 2: Housing Transaction Verticalization (Emerging, High Potential)
Enhanced Markets now represent 44% of connections (up from 21% a year ago), targeting 75%+.
Zillow Home Loans purchase origination volume was up 67% YoY in Q4 2025 to $1.5B while the industry was flat.
Purchase origination volume has grown 2.6x over two years. Buyers who use both ZHL and Premier Agent transact
at an 80% higher rate. BuyAbility has enrolled 3.6M users. Loan officer productivity up 11% even while adding
40% more LOs. For Sale revenue per total transaction value: ~$8.5-10 per $1,000 of transaction value.
Pillar 3: Rental Marketplace Growth (Strong, Fast-Growing)
Rentals revenue grew 39% YoY in FY2025, guided to ~30% in 2026. Zillow now holds 63% of
rental listings (up from 54% in 2024), with 2.5M average monthly active rental listings -- the most in
the category. Multifamily revenue grew 58% in FY2025 with multifamily properties up 44% to 72,000.
31M average monthly unique rental visitors per Comscore. Clear path to $1B+ annual rentals revenue target.
Highest ROI advertising spend among property managers per company surveys.
Pillar 4: Agent Software Ecosystem / Platform Lock-In (Strong)
ShowingTime powers ~90% of all US home tours. Follow Up Boss is used by 80%+ of top-volume agent teams.
Zillow Showcase is on 3.7% of new listings (up from 1.7% YoY), targeting 5-10%. Zillow Pro (beta) expanding
nationwide in H2 2026 -- could meaningfully expand the serviceable addressable market. 7M+ AI-powered
"smart messages" sent by agents in 2025. Agents using at least one Zillow product touch ~80% of residential
transactions, creating deep structural lock-in.
Mid-Cycle Revenue Opportunity
Existing Home Sales: ~4.1M Today vs. ~6M Normalized -- ~30-40% of Thematic TAM Locked Behind Macro Recovery
The US housing market remains depressed with existing home sales stuck at ~4.1M annualized vs. a normalized
level of ~6M. This means roughly 30-40% of the thematic TAM is locked behind a macro recovery that has not
yet materialized. Affordability is improving but mortgage rates remain elevated.
At mid-cycle (6M existing home sales): Management targets ~$5B revenue with ~45% EBITDA margins -- implying ~2x current revenue with dramatic margin expansion. For Sale revenue outperformed the housing market by 1,300 basis points in FY2025, demonstrating the ability to grow through the cycle via Enhanced Markets, Showcase, and vertical integration.
This is the key tension: Zillow has genuine thematic strength and widening competitive leads, but the full realization of its Housing Super App vision is partially gated by a housing market recovery that remains uncertain in timing.
At mid-cycle (6M existing home sales): Management targets ~$5B revenue with ~45% EBITDA margins -- implying ~2x current revenue with dramatic margin expansion. For Sale revenue outperformed the housing market by 1,300 basis points in FY2025, demonstrating the ability to grow through the cycle via Enhanced Markets, Showcase, and vertical integration.
This is the key tension: Zillow has genuine thematic strength and widening competitive leads, but the full realization of its Housing Super App vision is partially gated by a housing market recovery that remains uncertain in timing.
FY2025 Revenue
$2.58B
+16% YoY
Mid-Cycle Target
~$5B
At 6M existing home sales
Mid-Cycle EBITDA Margin
~45%
Significant expansion from current
For Sale vs. Market
+1,300 bps
FY2025 outperformance
Thematic Risks / Offsets
| Risk | Description | Severity |
|---|---|---|
| Housing market cyclicality | Existing home sales stuck at ~4.1M vs. ~6M normalized. Thematic upside partially gated by macro recovery. Affordability improving but rates remain elevated | High |
| Regulatory / legal overhang | RESPA case around Zillow Home Loans, CoStar $1B copyright lawsuit, FTC scrutiny. Management says no expected material financial impact | Medium |
| Mortgage vertical integration risk | ZHL is still small (<$200M annual revenue). Mortgage is capital-intensive and cyclical. Vertical integration may face pushback from agent partners | Medium |
| Private listing networks | Some agents/brokerages pushing for off-MLS listings. Currently <1% of listings but could grow. Zillow has enforced listing access standards | Medium |
| AI disruption risk | Generative AI could change how consumers search for homes. However, the regulated, local, high-stakes nature of real estate makes this less susceptible to general-purpose AI disruption | Low |
The primary thematic risk is cyclical exposure to a depressed US housing market. Zillow outperforms the market
cycle via Enhanced Markets and vertical integration, but ~30-40% of the TAM remains locked behind a macro recovery.
Score Rationale
| Factor | Assessment | Impact |
|---|---|---|
| Dominant market position | >50% US real estate portal traffic; 221M monthly uniques; widening competitive leads | +2.5 |
| Competitive threats fading | CoStar/Homes.com retrenching after $3B+ yielded minimal share; most credible challenger conceding | +1.0 |
| Rental marketplace growth | 39% YoY growth, 63% listing share, multifamily +58%; clear path to $1B+ revenue | +1.5 |
| Enhanced Markets / verticalization | 44% of connections (from 21%), ZHL originations +67% YoY, 2.6x volume growth over 2 years | +1.0 |
| Agent software lock-in | ShowingTime ~90% of tours, Follow Up Boss 80%+ of top teams, ~80% transaction touch rate | +1.0 |
| Housing cycle dependency | Existing home sales ~4.1M vs. ~6M normal; ~30-40% of TAM locked behind macro recovery | -1.5 |
| Mortgage still early / small | ZHL <$200M annual revenue; Super App vision proven but not at scale; capital-intensive | -0.5 |
| Legal / regulatory overhang | RESPA/RICO litigation, CoStar copyright suit, FTC scrutiny -- tail risks | -0.5 |
7/10 — Zillow scores a 7 reflecting genuine
thematic strength as the dominant US real estate platform, tempered by meaningful cyclical exposure to a
depressed housing market.
The score is anchored by three facts:
(a) Clear oligopoly leader with widening leads. Zillow holds >50% of US real estate portal traffic with 221M monthly uniques -- more than 2x the next competitor. 80% organic/direct traffic indicates deep brand moat. The most credible challenger (CoStar/Homes.com) is retrenching after $3B+ of failed investment.
(b) Multiple compounding growth vectors. Rentals (+39% YoY, 63% listing share), Enhanced Markets (44% of connections, targeting 75%+), and mortgage origination (+67% volume growth) are genuine high-growth vectors within a dominant platform. For Sale revenue outperformed the housing market by 1,300 bps in FY2025.
(c) Deep structural moats. Agent software lock-in (ShowingTime ~90% of tours, Follow Up Boss 80%+ of top teams) means agents using at least one Zillow product touch ~80% of residential transactions. This creates a flywheel that is extremely difficult to replicate.
Why 7 and not 8+: Revenue remains heavily tied to the depressed US housing cycle. Existing home sales at ~4.1M (vs. ~6M normalized) means ~30-40% of the thematic TAM is locked behind a macro recovery that has not materialized. Mortgage vertical integration is still early and small ($199M FY2025 revenue). The Housing Super App vision has proven concept but is not yet at scale. Revenue growth of 16% in FY2025 is solid but not extraordinary for a category-defining platform. A housing recovery would push this toward an 8-9.
The score is anchored by three facts:
(a) Clear oligopoly leader with widening leads. Zillow holds >50% of US real estate portal traffic with 221M monthly uniques -- more than 2x the next competitor. 80% organic/direct traffic indicates deep brand moat. The most credible challenger (CoStar/Homes.com) is retrenching after $3B+ of failed investment.
(b) Multiple compounding growth vectors. Rentals (+39% YoY, 63% listing share), Enhanced Markets (44% of connections, targeting 75%+), and mortgage origination (+67% volume growth) are genuine high-growth vectors within a dominant platform. For Sale revenue outperformed the housing market by 1,300 bps in FY2025.
(c) Deep structural moats. Agent software lock-in (ShowingTime ~90% of tours, Follow Up Boss 80%+ of top teams) means agents using at least one Zillow product touch ~80% of residential transactions. This creates a flywheel that is extremely difficult to replicate.
Why 7 and not 8+: Revenue remains heavily tied to the depressed US housing cycle. Existing home sales at ~4.1M (vs. ~6M normalized) means ~30-40% of the thematic TAM is locked behind a macro recovery that has not materialized. Mortgage vertical integration is still early and small ($199M FY2025 revenue). The Housing Super App vision has proven concept but is not yet at scale. Revenue growth of 16% in FY2025 is solid but not extraordinary for a category-defining platform. A housing recovery would push this toward an 8-9.
Data sourced from Daloopa, Zillow Group FY2025 earnings calls, and third-party market research as of April 2026.