Question 1

Is this every GAF permit?

Accepted Answer

No. These are the 3,497 permits across 25 metros where "GAF" was detected by name in the permit description — not a complete census of GAF installations. Many GAF jobs never name the brand in the permit text, and we only count covered metros. Treat the counts as a high-confidence floor of detected mentions, not a total.

Question 2

How is "GAF" detected in a permit?

Accepted Answer

We run named-entity recognition over the permit description and scope text and keep only high-confidence matches. A permit is attributed to GAF when the brand is named explicitly in that text; permits that installed GAF equipment without naming it are not counted.

Question 3

What can I do with this?

Accepted Answer

Use the metro, segment, and contractor breakdowns to see where this brand is being installed and replaced, and which contractors install it — equipment-replacement intelligence drawn from the permits that name the unit (mostly residential and small-commercial). Per-permit signal (address, scope, contractor, status, geocode, DQ flags) is queryable per row via the API.

Address	Metro	Issued
849 E 118th Dr, Los Angeles, CA 90059	Los Angeles	2009-05-18
8326-8330 W Blackburn Ave, Los Angeles, CA 90048	Los Angeles	2009-08-20
3205 W Los Feliz Blvd #5, Los Angeles, CA 90039	Los Angeles	2007-09-05
2566 N San Fernando Road, Los Angeles, CA 90065	Los Angeles	2011-10-07
11110 W Magnolia Blvd, Los Angeles, CA 91601	Los Angeles	2010-03-24
540 N Crane Blvd, Los Angeles, CA 90065	Los Angeles	1999-12-17
1702 N Lagoon Ave, Los Angeles, CA 90744	Los Angeles	2010-03-04
3070 W Pico Blvd, Los Angeles, CA 90006	Los Angeles	1997-06-27
745 High Summit Trl, Fort Worth, TX 76131	Fort Worth	—
2611 N Rokeby St, Los Angeles, CA 90039	Los Angeles	1997-08-21

GAF — permits where it was detected.

Where GAF was detected, by metro.

Where GAF was detected, by segment.

Contractors most often named alongside GAF.

A sample of permits where GAF was detected.