Firms Working In Landscape Architecture
Unranked roundup — fewer than 8 firms have enough eligible activity in this window to hold a rank, so a ranking would be a false signal. Listed alphabetically instead.
Score = 1.0 per eligible project completed this year or last, 0.75 for
2–3 years ago, 0.5 for 4–5 years ago, +0.1 per independently-sourced
project (capped at +0.5/firm). Eligible: status: completed
projects with year_completed in the trailing 5 years.
Ties broken by most recent status_verified date. See
About for the full methodology.
Counts reflect the work this index has recorded, not a census of any firm's total output — coverage depth varies by firm — and a position here implies no judgment of design quality.
| Firm | HQ | Eligible projects |
|---|---|---|
| GGN | Seattle, WA | Urban Interpretation — Why a Meadow? (2022), Founders Hall — Signage (2022), Oxbow Farm Trail Wayfinding (2021) |
| Hewitt | Seattle, WA | Renton Market (2026), Vashon Food Bank (2026) |
| Mathews Nielsen Landscape Architects | New York, NY | Stavros Niarchos Foundation Library (2021) |
| OLIN | Philadelphia, PA | Prior Performing Arts Center (2022) |
| SCAPE | New York, NY | Arkansas Museum of Fine Arts (2023), Tom Lee Park (2023) |
| Snøhetta | Brooklyn, NY | Theodore Roosevelt Presidential Library Exhibition Experience (2026), Blanton Museum of Art Grounds Redesign (2024), Joslyn Art Museum Rhonda & Howard Hawks Pavilion (2024), Vesterheim Commons (2023), Ordrupgaard Museum Extension & Landscape (Himmelhaven) (2021) |
| SWA Group | Sausalito, CA | Halperin Park (2026) |