spareroom.co.uk

Readiness by lane

Green: spareroom.co.uk. Thin bar: Real Estate & Property Listings peer median.

Priority fixes for spareroom.co.uk

Ordered by impact and by how common each practice is among peers.

1. Priority 1 · Harden

   TLS 1.3 negotiated

   Observed: The TLS connection negotiated TLSv1.2.

   Why it matters: TLS 1.3 removes legacy cipher suites and completes the handshake in fewer round trips, so it is both safer and faster for new connections.

   What to do: Enable TLS 1.3 on your CDN or server. Keep TLS 1.2 available for older clients unless you have checked your audience.

   89% of Real Estate & Property Listings peers do this. Limit: Certificate and protocol were observed from one vantage point; CDNs can present different certificates by region.

   Guide: HTTPS and TLS Guide for Website Owners

2. Priority 2 · Harden

   HSTS kept for at least a year

   Observed: The homepage response did not include a Strict-Transport-Security header.

   What to do: Send Strict-Transport-Security on HTTPS responses. Start with a short max-age (for example 300 seconds), confirm every subdomain works over HTTPS, then raise it in steps to 31536000. Add includeSubDomains only when all subdomains are HTTPS. HSTS preload is optional and hard to undo; hstspreload.org itself does not recommend it by default.

   On Fastly: Add the header in VCL or a header rule as described in Fastly's HSTS guide.

   43% of Real Estate & Property Listings peers do this.

   Guide: HTTPS and TLS Guide for Website Owners

3. Priority 3 · Enable

   XML sitemap discoverable

   Observed: No sitemap was listed in robots.txt or found at /sitemap.xml.

   What to do: Generate an XML sitemap of canonical URLs, reference it in robots.txt and submit it in Google Search Console.

   74% of Real Estate & Property Listings peers do this.

   Guide: XML Sitemap Guide: Include Only URLs You Stand Behind

4. Priority 4 · Accelerate

   Static files cached for 30 days or more

   Observed: A same-site stylesheet or script was cacheable for 2 hours, short of the 30-day benchmark.

   What to do: Give versioned (fingerprinted) CSS, JavaScript, fonts and images Cache-Control: public, max-age=31536000, immutable, and change the file name whenever the content changes.

   51% of Real Estate & Property Listings peers do this.

   Guide: Browser Caching Guide for Website Owners

What spareroom.co.uk already does well

Practices fewer than half of Real Estate & Property Listings peers use.

• security.txt publishedsecurity.txt with a contact found.8% of peers
• Content Security Policy presentContent-Security-Policy present.30% of peers
• No render-blocking scripts in <head>Head scripts load without blocking.49% of peers

What we saw

Homepage checked

https://www.spareroom.co.uk/

Homepage response

HTTP 200

TLS

TLSv1.2, HTTP/2

Certificate

GlobalSign, 396-day validity, expiring 2026-12-12

CDN or edge

Fastly, Google edge

DNS operators

Google Cloud DNS

DMARC policy

p=quarantine

Homepage HTML

83 KB, gzip

Images on homepage

26 (svg 19, jpg 19, avif 14, webp 14, png 1)

Limits: homepage only, one location, one moment. Header checks reflect the homepage response; other pages may differ.

Stack and providers

Seen in the homepage response, certificate and DNS. Provider pages compare how their customers configure the same checks.

All 31 checks

Select a gap for the method and fix. How each check works

Compare with other Real Estate & Property Listings sites

• citya.com68
• domovita.by68
• iadfrance.fr67
• immoweb.be67
• movoto.com68

Real Estate & Property Listings readiness benchmark