Building · 2026
Mayo Clinic Ozmun & Waterman Building
Rochester, MN · near Mayo Clinic St Marys Hospital (0.6 mi)
What this outcome means
The FAA studied the proposal and concluded it would not be a hazard to air navigation. A no-hazard determination is not permanent — it carries an expiration date, and if the structure is not built by then the case has to be re-filed.
The proposal, in the filer's words
"Revised submission for 2026-AGL-2333-OE per Ashley / Marla email request 3-23-2026 for new 6 points. New 6 points provide general area of building. Right side is talller than left side. Mayo Clinic is building an expansion to the existing Gonda Building on its downtown campus in Rochester Minnesota. The building will be a hospital and clinic. The new structure will physically connect to the current Gonda Building and extend westward from the existing facility.\nThe building will be constructed in phases. The initial phase (Day 1) will have a maximum height of 360' feet above ground level = 1 366' AMSL. Ozmun left side is 240' tall. The building is structurally designed to allow for a future vertical expansion to a maximum height of 458' feet above ground level = 1 464' AMSL. As part of this submission approval is requested for both the initial construction height and the ultimate maximum build-out height.\nPrimary construction materials will include curtain wall systems glass metal panels a structural steel frame with concrete floor decks and TPO/PVC roofing systems.\nGeographic coordinates identifying the proposed building location:\npoint # lat_dms lon_dms latitude_dd longitude_dd\n1 N44°01'18.38\ W92°28'14.08\" 44.02177222 -92.47057778\n2 N44°01'20.66\" W92°28'14.08\" 44.02240556 -92.47057778\n3 N44°01'18.38\" W92°28'05.95\" 44.02177222 -92.46831944\n4 N44°01'18.62\" W92°28'15.10\" 44.02183889 -92.47086111\n5 N44°01'20.41\" W92°28'15.10\" 44.02233611 -92.47086111\n6 N44°01'19.58\" W92°28'05.95\" 44.02210556 -92.46831944\n7 N44°01'20.66\" W92°28'06.86\" 44.02240556 -92.46857222\n8 N44°01'21.79\" W92°28'04.79\" 44.02271944 -92.46799722\n9 N44°01'24.13\" W92°28'04.79\" 44.02336944 -92.46799722\n10 N44°01'24.13\" W92°28'02.98\" 44.02336944 -92.46749444\n11 N44°01'20.01\" W92°28'01.82\" 44.022225 -92.46717222\n\nProject Crane Construction Notice submission Crane Aeronautical Study number 2025-AGL-16458-OE. Will also have Waterman Crane submission.""
Filing details
- Case number (ASN)
- 2026-AGL-4925-OE
- Structure
- Mayo Clinic Ozmun & Waterman Building
- Type
- Building
- Category
- Building
- Height above ground
- 360 ft
- Height above sea level
- 1,366 ft
- Site elevation
- 1,006 ft
- Notice of
- New Construction
- Duration
- Permanent
- Marking & lighting
- —
Timeline
- Filed
- March 24, 2026
- Determined
- May 5, 2026
- Determination expires
- November 5, 2027
A determination that lapses before the structure is built has to be re-filed. The FAA does not send a reminder.
Who filed it
- Sponsor
- Larry McKillop Cannon Design
- Representative
- Larry McKillop on behalf of Mayo Clinic
Names are shown as they appear in the FAA's public record. How we handle names
Location
- Coordinates
- 44.021772, -92.470861
- Degrees / minutes / seconds
- 44°01'18.4"N 92°28'15.1"W
- County
- Olmsted
- Open in a map
- Google MapsOpenStreetMap
Other filings within 5 miles
Organisation-sponsored 2026 filings whose coordinates sit near this one.
About this record
This page is a readable copy of a public record published by the FAA's Obstruction Evaluation / Airport Airspace Analysis system. It is not the official record and may lag it. For the authoritative case status, search this ASN at the FAA's OE/AAA portal. If something here is wrong, email support@idea-engine.studio and we will correct it.
Source: FAA Obstruction Evaluation / Airport Airspace Analysis (OE/AAA) public archive (oeaaa.faa.gov), data as of September 12, 2026. Compiled by LOS Analyzer (Idea Engine LLC). This is not an official FAA record or an FAA determination; the FAA's portal is authoritative. LOS Analyzer is not affiliated with or endorsed by the FAA.
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