Site Health Report Card

zillow.com

  • Zillow
  • Services · Real estate
  • Online since 2006
  • Checked Sep 30, 2026

“Dream homes. Heavy listings.”

Pica's take. Zillow is where people look at houses they cannot afford, and it loads accordingly: six megabytes of kitchens. Decent locks, moderate guests, and a rental on AWS. Ironically, it rents.

B+88 / 100

Overall health

#77 of 100 sites graded

  • Largest paint

    3.9s

  • Page weight

    6.4 MB

  • Requests

    210

  • Third-party scripts

    26

  • Domain age

    20 yrs

  • Blocklists

    0 / 60

Timed by our own browser

Site Speed

C-
70

Gets there, with notes.

Largest paint (LCP)
3.9s
First paint (FCP)
1.7s
Server response (TTFB)
350 ms
Layout shift (CLS)
0.10
Page weight
6.4 MB
Requests
210

Pica: Six megabytes. Open house, slow door.

Run the Speed Test on zillow.com

A look from the outside

Security Check

B
85

Solid, with a quibble or two.

HTTPS everywhere
Yes
HSTS
Preloaded
TLS
1.3
Content Security Policy
Partial
Mixed content
None
Third-party scripts
26

Pica: Twenty-six outside scripts. Neighbors peeking.

Run the Hack Check on zillow.com

What the internet says about it

Reputation Check

A
95

In excellent shape.

Domain age
20 years
Blocklists
0 of 60
Malware reports
None
Email authentication
DMARC reject
Certificate
Valid · 80 days
Lookalike domains
Plenty

Pica: Twenty years old. Has valued every house on your street, including yours.

Run the Tracker Check on zillow.com

Is it in a good neighborhood?

Hosting Check

A+
100

In excellent shape.

Network
AWS · AS16509
Content delivery
CloudFront + Akamai
IPv6
Yes
HTTP/3
Yes
Shared-IP neighbors
Shared cloud, well kept
Flagged neighbors
0

Pica: Rents on AWS. Ironic, for a real estate site.

Run the TTFB Check on zillow.com

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How we grade. Four checks, weighted equally: speed timed by our own browser, a security look from the outside, public reputation signals, and the network the site lives on. A look from the outside is not a server audit.