Top DoD landscape architectural services contractors
In the 12 months ending Oct 5, 2026, the Department of Defense obligated $242.5M in net prime contract dollars under NAICS 541320, up 166.9% from $90.9M in the preceding 12 months. 21 prime contractors received positive obligations, and 7 of them accounted for 80% of that spend.
Prime contracts funded by the Department of Defense. Latest 12 months: Oct 6, 2025 to Oct 5, 2026. Source: USAspending.gov.
DoD publishes contract data to USAspending with a 90-day delay, so the most recent months understate DoD activity.
Obligations by fiscal year
Net prime contract obligations by federal fiscal year (October to September).
Top DoD contractors for NAICS 541320
Ranked by positive obligations in the latest 12 months. Share is of all positive obligations in this market.
| # | Contractor | Latest 12 mo | Prior 12 mo | Share | Rank change |
|---|---|---|---|---|---|
| 1 | CACI, Inc. - Federal | $44.2M | $0 | 18.2% | New |
| 2 | Booz Allen Hamilton Inc | $41.7M | $361K | 17.2% | ▲ 10 |
| 3 | Leidos, Inc. | $36.6M | $23.1M | 15.1% | ▼ 1 |
| 4 | Science Applications International Corporation | $30.5M | $0 | 12.6% | New |
| 5 | Information Systems & Networks Corporation | $21.0M | $0 | 8.6% | New |
| 6 | Trace Systems Inc. | $17.8M | $0 | 7.3% | New |
| 7 | v2x Systems LLC | $10.0M | $0 | 4.1% | New |
| 8 | KBR Wyle Services, LLC | $9.5M | $0 | 3.9% | New |
| 9 | Peraton Inc. | $8.7M | $434K | 3.6% | ▲ 1 |
| 10 | HDR Engineering, Inc. | $7.7M | $26.0M | 3.2% | ▼ 9 |
| 11 | JG&A-TSG JV | $6.4M | $12.9M | 2.6% | ▼ 8 |
| 12 | Alliance WSP JV, LLC | $2.4M | $12.1M | 1.0% | ▼ 8 |
| 13 | Michael Baker International, Inc. | $1.8M | $3.7M | 0.7% | ▼ 7 |
| 14 | Siemens Government Technologies Inc | $1.3M | $0 | 0.5% | New |
| 15 | Makers Architecture and Urban Design LLP | $921K | $3.3M | 0.4% | ▼ 8 |
What changed in the last 12 months
Contractors with the largest change in reported obligations versus the preceding 12 months.
Largest gains
- CACI, Inc. - Federal$0 → $44.2M (+$44.2M) · now #1
- Booz Allen Hamilton Inc$361K → $41.7M (+$41.4M) · now #2
- Science Applications International Corporation$0 → $30.5M (+$30.5M) · now #4
Largest declines
- HDR Engineering, Inc.$26.0M → $7.7M (−$18.3M) · now #10
- Alliance WSP JV, LLC$12.1M → $2.4M (−$9.7M) · now #12
- JG&A-TSG JV$12.9M → $6.4M (−$6.6M) · now #11
New to this market
8 contractors received their first obligations in this market (since FY2022) during the latest 12 months. The largest:
| Contractor | First obligation | Latest 12 mo |
|---|---|---|
| CACI, Inc. - Federal | Aug 21, 2026 | $44.2M |
| Science Applications International Corporation | Dec 11, 2025 | $30.5M |
| Information Systems & Networks Corporation | Jul 6, 2026 | $21.0M |
| Trace Systems Inc. | May 8, 2026 | $17.8M |
| v2x Systems LLC | Apr 22, 2026 | $10.0M |
| KBR Wyle Services, LLC | May 15, 2026 | $9.5M |
| Siemens Government Technologies Inc | Dec 17, 2025 | $1.3M |
| VGS Aircraft Services, Inc. | Jun 2, 2026 | $345K |
Where the money comes from
Funding sub-agencies within the Department of Defense, latest 12 months. The funding organization can differ from the office that runs the requirement.
| Funding sub-agency | Latest 12 mo | Prior 12 mo | Change |
|---|---|---|---|
| Department of the Air Force | $124.3M | $4.4M | Up $119.9M (2727.9%) |
| Department of the Army | $70.7M | $75.3M | Down $4.6M (6.1%) |
| Department of the Navy | $22.4M | $9.3M | Up $13.1M (141.3%) |
| U.S. Special Operations Command | $17.8M | $250K | Up $17.5M (7026.4%) |
| Immediate Office of the Secretary of Defense | $7.2M | $0 | New |
Potential recompetes
Large awards in this market whose current period of performance ends in the next 18 months. Treat these as research leads: options, extensions, and follow-on vehicles often change the timing.
| Award | Incumbent | Obligated | Current end |
|---|---|---|---|
| W912DW22F0018 | Bluestone Environmental Group, Inc. REMEDIAL INVESTIGATION/ FEASIBILITY STUDY AND ECOLOGICAL AND HUMAN HEALTH BASELINE RISK ASSESSMENT AT THE FORMOSA MINE SUPERFUND SITE, RIDDLE, OREGON | $3.0M | Dec 19, 2026 |
| 47QFWA26F0004 | Booz Allen Hamilton Inc B52 SPO B1 SPO CERP WEAPONS WLCMT | $33.0M | Jan 19, 2027 |
| W912BV24F0322 | Alliance WSP JV, LLC REAL PROPERTY MASTER PLANNING AND ENTERPRISE PROGRAM SUPPORT, INSTALLATION MANAGEMENT COMMAND (IMCOM) HEADQUARTERS (HQ) BASE TASK 1-4 AND OPTION 13. | $10.5M | Jan 29, 2027 |
| 47QFCA26F0025 | Booz Allen Hamilton Inc FORWARD UNITY IN STRATEGIC INFLUENCE AND OPERATIONAL NETWORKING INITIAL AWARD | $5.9M | Feb 28, 2027 |
| W31P4Q26F0112 | KBR Wyle Services, LLC ONE ACQUISITION SOLUTION FOR INTEGRATED SERVICE PLUS (OASIS+) SYSTEMS ENGINEERING AND TECHNICAL ASSISTANCE (SETA) | $8.3M | Jun 21, 2027 |
| W58RGZ26F0207 | Science Applications International Corporation HARDWARE-IN-THE-LOOP (HWIL) AVIATION SYSTEMS BRIDGE. | $5.5M | Jun 30, 2027 |
| M9549426F0006 | Information Systems & Networks Corporation MCICOM UNACCOMPANIED HOUSING PROPERTY MANAGEMENT SUPPORT SERVICES. | $21.0M | Jul 13, 2027 |
| 47QFCA26F0030 | CACI, Inc. - Federal APOLLO BASE AWARD THE NAICS FOR THIS AWARD IS 541990 | $44.2M | Aug 31, 2027 |
| 47QFLA26F0022 | Trace Systems Inc. ENTERPRISE ACQUISITION OF GEOSPATIAL LEVERAGED EQUIPMENT AND INTEGRATION (EAGLE-I) - TASK ORDER AWARD | $17.8M | Sep 9, 2027 |
| W912BV24F0316 | HDR Engineering, Inc. ARMY GARRISON HAWAII MASTER PLANNING SUPPORT | $7.7M | Sep 27, 2027 |
Common questions
Who are the top DoD contractors for NAICS 541320?
In the latest 12 months, CACI, Inc. - Federal ($44.2M), Booz Allen Hamilton Inc ($41.7M), Leidos, Inc. ($36.6M) received the most DoD obligations for landscape architectural services.
How concentrated is this market?
The eight largest primes held 87.1% of positive obligations, and CACI, Inc. - Federal alone held 18.2%. 8 contractors won their first obligations in this market during the latest 12 months.
Are any large DoD NAICS 541320 contracts ending soon?
10 of the largest awards in this market reach their current end date in the next 18 months. The first is W912DW22F0018 (Bluestone Environmental Group, Inc., $3.0M obligated), ending Dec 19, 2026. An end date is a research lead, not a confirmed recompete: options and extensions often move it.
Related markets
Figures are net obligations on prime contracts (award types A–D) from USAspending.gov, grouped by funding agency and the NAICS code on each award. Net obligations include deobligations and corrections, so they can differ from positive-obligation totals. See methodology.
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