Original research · Plumbing cohort · 2026-08-26

Plumbing website benchmark. 1,128 sites measured.

Routeless measured 1,128 live plumbing homepages. Among the 1,098 completed mobile PageSpeed runs, median LCP was 7.1 seconds and 6.3% met the 2.5-second benchmark.

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Homepage signal rates use 1,128 valid scans. Lab performance uses completed PageSpeed runs. Field Core Web Vitals was available for 182 domains and is reported separately.

  • 1,128 audited plumbing domains
  • 1,098 successful mobile PageSpeed runs
  • 182 domains with eligible field data
Cohort summary

Four measurements describe the published sample.

Each result keeps the instrument and valid denominator attached. Lab and field performance are shown separately.

Mobile lab · n=1,098 61

median mobile performance score

Lighthouse score on completed mobile runs.

Mobile lab · n=1,098 7.1s

median Largest Contentful Paint

Google defines 2.5 seconds or less as good.

Mobile lab · n=1,098 6.3%

met the 2.5-second LCP benchmark

69 completed runs met the boundary.

Available field data · n=182 9.3%

passed Core Web Vitals in field data

17 eligible domains passed the field assessment.

National comparison

Plumbing websites compared with the full sample.

Both columns come from the same dated snapshot and use the same measurement definitions. The comparison is descriptive: cohort membership and site mix can affect the result.

Swipe to compare all columns →
MetricPlumbing cohortNational sample
Audited domains1,12811,432
Median mobile score6161
Median lab LCP7.1s7.9s
Met 2.5s LCP benchmark6.3%4.6%
Median page weight2.4 MB2.2 MB
Contact form detected40.6%36.9%
Analytics detected68.9%70.4%
Structured data detected80.6%77.9%
Online booking detected3.8%8.4%

The national column covers 11,432 deduplicated domains. Every rate uses its own valid denominator in the public data.

Mobile performance

Lab speed, page weight, requests, and field data.

Lighthouse provides a controlled mobile lab measurement. Core Web Vitals field data reflects eligible real-user Chrome visits and covers a smaller subset.

Swipe to view every performance column →
MeasureResultValid sampleInstrument
Median mobile score61n=1,098Lighthouse mobile lab
Median LCP7.1sn=1,098Lighthouse mobile lab
Median page weight2.4 MBn=1,098Lighthouse mobile lab
Median request count78n=1,098Lighthouse mobile lab
Median CLS0.000n=1,098Lighthouse mobile lab
Met 2.5s LCP benchmark6.3%69 of 1,098Lighthouse mobile lab
Passed field Core Web Vitals9.3%17 of 182Eligible Chrome field data

Lab and field samples answer different questions and should not be merged. A field-data denominator smaller than the audited cohort means Chrome did not expose an eligible public assessment for every domain.

Homepage signals

What the scanner detected across 1,128 homepages.

These rates describe machine-readable evidence on the live homepage. A signal marked not detected may still exist behind an implementation the scanner does not recognize.

Contact form detected

40.6%

458 of 1,128 valid homepage observations

Phone link detected

83.8%

945 of 1,128 valid homepage observations

Online booking detected

3.8%

43 of 1,128 valid homepage observations

Analytics detected

68.9%

777 of 1,128 valid homepage observations

Structured data detected

80.6%

909 of 1,128 valid homepage observations

Sitemap detected

78.0%

880 of 1,128 valid homepage observations

HTTPS served

97.2%

1,096 of 1,128 valid homepage observations

Mobile viewport configured

98.2%

1,108 of 1,128 valid homepage observations

WordPress detected

49.2%

555 of 1,128 valid homepage observations

DIY-site builder detected

24.2%

273 of 1,128 valid homepage observations

Methodology and limits

How to read this industry benchmark.

Cohort 1,128 classified domains

The page publishes only after an industry cohort reaches 100 valid audits in the immutable snapshot.

Instruments Homepage scan and mobile lab test

Homepage fingerprints and PageSpeed runs retain separate denominators. Eligible Chrome field data is a third, smaller sample.

Limits Observed sample, not a census

The results describe this dated cohort. Detection can miss unknown implementations, and differences do not prove that an industry or technology caused an outcome.

Edition 2026 · revision 2 · collected 2026-08-24 through 2026-08-25. The national methodology documents metric definitions, correction policy, and the full snapshot.

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Questions answered by the data

Plumbing website benchmark FAQ.

This edition includes 1,128 audited plumbing websites. Mobile performance figures use the 1,098 sites that completed a PageSpeed run.

The median mobile Lighthouse LCP was 7.1 seconds. 6.3% of the 1,098 completed runs met the 2.5-second benchmark.

40.6% of the 1,128 valid homepage observations had a detectable contact form.

No. This is an observational cohort from the dated Routeless snapshot, not a census of every plumbing website. It supports comparisons within the measured sample and does not establish causation.

The mobile PageSpeed figures are controlled Lighthouse lab measurements. The Core Web Vitals field rate uses eligible real-user Chrome data from a smaller subset of 182 domains. The samples answer different questions and are reported separately.