theSierraIndex
UPDATED 2026-10-05
SI
INDEX
Answer Share · Roofing contractors

Los Angeles, CA

Share of responses, across 4 AI models and 4 question types, in which each company is named when a user asks for advice on roofing contractors services in this market (154 responses measured).
Market concentration
59.1%
Concentration — the share of responses naming one of the top 3 companies shown below.
Answer Share by company
Company Share of responses Answer Share Citation Share
All In Roofing
31.8% 0.6%
Bilt-Well Roofing
29.9% 1.1%
Roof Repair Specialist
25.3% 1.5%
Benefit Roofing
21.4% n/d
Rafael & Iris Roofing
18.2% n/d
Top Roofing Inc
14.3% n/d
Clear View Roofing & Construction
13.0% n/d
Smart Roofing Inc
9.7% 0.2%
Power Roofing
9.7% 0.3%
J&M Roofing
9.7% n/d
Jordan Roof Company
9.7% n/d
Kayhan’s Roofing
8.4% n/d
How we collected the data and how to read it

How we collected this data

Every week, the same frozen set of 4 question phrasings is sent to OpenAI, Anthropic, Google Gemini, and Perplexity — through each provider’s official API, with active web search, never through a consumer chat interface.

Same market, same questions, repeated on a fixed schedule — not a single sample. No AI model is paid or influenced; this page reports what each one already says.

How to read the numbers

Answer Share — the share of measured responses that name a given company. 55.6% means the company appeared in 55.6% of the responses collected for this market.

Market concentration — the share of responses naming at least one of the top 3 companies: how fragmented or concentrated the answers are for this market.

Citation Share — the share of citations linking directly to a company’s own website, among companies whose domain we’ve matched. Shown as n/d where we haven’t matched a domain, or 0% where the domain is known but never cited directly — AI models often cite a review aggregator instead of the company’s own site.

The date at the top of this page is when this market was last measured. Numbers refresh weekly.

Methodology: 4 AI models (OpenAI, Anthropic, Google Gemini, Perplexity), 4 question phrasings per measurement, data collected via official APIs with active web search. No payment influences this ranking. Read the full methodology →