SKYDB Building database

Tall buildings worldwide, with heights, construction status and the companies involved.

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Tall buildings, tracked.

SKYDB is collecting verifiable information about buildings.

company #931249671

J.F. Ahern Co.

active fire protection engineering

Activity Rankings

Object dataJoin to edit

Status active
Rolefire protection engineering
CityFond du Lac, WI
CountryUnited States
Source: SKYDB | As of: 2026-10-27

Location

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Statistics

Buildings by decade

Click any bar to drill into that completion decade.

2 11.1% 2020s 13 72.2% 2010s 2 11.1% 2000s 0 0% 1990s 0 0% 1980s 0 0% 1970s 0 0% 1960s 0 0% 1950s 1 5.6% 1940s 0 0% 1930s 0 0% 1920s 0 0% 1910s 0 0% 1900s

By status

Completed: 18 (100%)
  • Completed 18

By primary use

residential: 6 (30%) office: 6 (30%) lodging: 3 (15%) education: 2 (10%) Other (3): 3 (15%)
  • residential 6
  • office 6
  • lodging 3
  • education 2
  • Other (3) 3

By floor count

1-9 floors: 17 (94%) 10-19 floors: 1 (6%)
  • 1-9 floors 17
  • 10-19 floors 1

By height

Under 50 m: 5 (71%) 50-99 m: 2 (29%)
  • Under 50 m 5
  • 50-99 m 2

Source: SKYDB | As of: 2026-10-27

J.F. Ahern Co. Buildings View all