NAICS Code 541310: Architectural Services
National industry
SBA small business size standard: $12.5 million in average annual receipts
Definition
This industry comprises establishments primarily engaged in planning and designing residential, institutional, leisure, commercial, and industrial buildings and structures by applying knowledge of design, construction procedures, zoning regulations, building codes, and building materials.
Government contracts for this service: PSC C219 Other Architect and Engineering Services
Code facts
- Part of
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54
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541
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5413
- 54131
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5413
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541
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54
- Contract awards
- 729 In the last 12 months
- Contract obligations
- $724,408,545 In FY2025
NAICS codes and definitions come from the U.S. Census Bureau, size standards from the SBA and contract spending from SAM.gov/FPDS.
Business activities under NAICS 541310
- Architects' (except landscape) offices
- Architects' (except landscape) private practices
- Architectural (except landscape) consultants' offices
- Architectural (except landscape) design services
- Architectural (except landscape) services
- Building architectural design services
Looking for another activity? Search the NAICS code lookup or browse business activities from A to Z.
Contract obligations by fiscal year
| Fiscal year | Obligated |
|---|---|
| FY2027 To date | $8,165,523 |
| FY2026 | $586,586,798 |
| FY2025 | $724,408,545 |
| FY2024 | $966,917,070 |
| FY2023 | $1,796,246,294 |
Top contractors by obligations
| Rank | Contractor | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | National Institute Of Building Sciences | $41,912,184 | |
| 2 | HDR Engineering Inc. | $33,354,828 | |
| 3 | North Arrow, Inc. | $26,577,313 | |
| 4 | AECOM Technical Services, Inc. | $25,847,830 | |
| 5 | Shalom Baranes Associates, P.C. | $23,635,696 | |
| 6 | Zimmer Gunsul Frasca Architects LLP | $21,144,648 | |
| 7 | Flad / Page Design Partnership | $17,935,122 | |
| 8 | Jacobs Engineering Group Inc. | $15,146,914 | |
| 9 | Rex Architecture, P.C. | $14,686,051 | |
| 10 | Annum Architects, Inc. | $13,183,858 |
See the full FY2025 ranking of NAICS 541310 contractors, by parent company.
Top funding agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | General Services Administration | $113,611,659 | |
| 2 | Department of the Army | $71,908,302 | |
| 3 | Department of State | $62,607,884 | |
| 4 | Department of Justice | $53,972,215 | |
| 5 | Air Force | $47,902,844 | |
| 6 | Department of Veterans Affairs | $40,469,914 | |
| 7 | Department of the Navy | $34,598,842 | |
| 8 | Department of Health and Human Services | $29,557,578 | |
| 9 | Smithsonian Institution | $26,360,345 | |
| 10 | Department of Homeland Security | $19,776,283 |
Top PSC codes by obligations
| Rank | PSC code | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | C219 Other Architect and Engineering Services | $201,190,123 | |
| 2 | C211 Architect – Engineer Services (including landscaping, interior layout, and designing) | $168,593,013 | |
| 3 | C1AA Architect and Engineering – Construction: Office Buildings | $42,979,566 | |
| 4 | C1DA Architect and Engineering – Construction: Hospitals and Infirmaries | $26,349,264 | |
| 5 | C1JZ Architect and Engineering – Construction: Miscellaneous Buildings | $26,269,095 | |
| 6 | C1JA Architect and Engineering – Construction: Museums and Exhibition Buildings | $26,167,082 | |
| 7 | R425 Engineering and Technical Services | $23,352,528 | |
| 8 |
C1AZ Architect and Engineering – Construction: Other Administrative Facilities/ |
$17,184,719 | |
| 9 | C212 Engineering Drafting Services | $10,052,032 | |
| 10 | C215 A&E Production Engineering Services (including Design and Control, and Building Programming) | $5,049,929 |
Contract obligations by state
| Rank | Place of performance | Obligated, last 12 months | Share |
|---|---|---|---|
| 1 | District of Columbia | $125,119,045 | |
| 2 | Alaska | $50,792,874 | |
| 3 | California | $46,578,682 | |
| 4 | Virginia | $46,410,799 | |
| 5 | New York | $38,068,054 | |
| 6 | Georgia | $29,460,985 | |
| 7 | Alabama | $17,962,507 | |
| 8 | Massachusetts | $17,284,470 | |
| 9 | Florida | $17,068,616 | |
| 10 | Texas | $15,552,265 | |
| 11 | Maryland | $15,281,737 | |
| 12 | Missouri | $14,678,136 | |
| 13 | Illinois | $12,727,947 | |
| 14 | Washington | $8,261,797 | |
| 15 | Hawaii | $8,227,805 | |
| 16 | Colorado | $7,363,759 | |
| 17 | Tennessee | $5,948,579 | |
| 18 | Nebraska | $5,784,999 | |
| 19 | Arizona | $5,711,675 | |
| 20 | Ohio | $5,625,544 | |
| 21 | Utah | $5,621,110 | |
| 22 | Michigan | $5,250,549 | |
| 23 | Wisconsin | $4,315,568 | |
| 24 | Indiana | $3,699,236 | |
| 25 | Pennsylvania | $3,490,162 | |
| 26 | Minnesota | $3,244,377 | |
| 27 | Oregon | $2,809,463 | |
| 28 | North Carolina | $2,695,323 | |
| 29 | Mississippi | $2,168,445 | |
| 30 | Kansas | $2,069,212 | |
| 31 | Puerto Rico | $1,982,144 | |
| 32 | South Carolina | $1,869,922 | |
| 33 | Oklahoma | $1,737,981 | |
| 34 | Maine | $1,524,953 | |
| 35 | New Mexico | $1,341,832 | |
| 36 | New Jersey | $1,258,028 | |
| 37 | Idaho | $1,120,560 | |
| 38 | Vermont | $1,065,179 | |
| 39 | Louisiana | $830,041 | |
| 40 | U.S. Virgin Islands | $790,816 | |
| 41 | West Virginia | $744,466 | |
| 42 | South Dakota | $600,636 | |
| 43 | Montana | $532,967 | |
| 44 | Nevada | $402,591 | |
| 45 | Iowa | $398,292 | |
| 46 | North Dakota | $324,854 | |
| 47 | Arkansas | $164,842 | |
| 48 | Kentucky | $135,869 | |
| 49 | Connecticut | $114,019 | |
| 50 | New Hampshire | $79,944 | |
| 51 | Wyoming | $10,917 |
Show all 51
Shares are of everything obligated under NAICS 541310 in the last 12 months before deobligations, including work performed abroad or with no place of performance on record.
Contract opportunities
Show 40 more
Latest 50 of 8,483 listed here. See the rest on GovTribe.
Size standard history
Federal Register rules that named this code
Proposed size standard changes
| Proposed rule | Published | Comments |
|---|---|---|
| Small Business Size Standards: Monetary-Based Industry Size Standards | Closed Oct 21, 2025No final rule found |
From the NAICS codes each rule's amendments to 13 CFR 121.201 name. Rules that print their size standard tables as images aren't listed.
Quick answers
What is NAICS 541310?
NAICS 541310 is Architectural Services, a national industry in NAICS 54, Professional, Scientific, and Technical Services.
What is the NAICS code for architects' (except landscape) offices?
The NAICS code for architects' (except landscape) offices is 541310, Architectural Services.
What is the NAICS code for building architectural design services?
The NAICS code for building architectural design services is 541310, Architectural Services.
What is the NAICS code for architectural (except landscape) services?
The NAICS code for architectural (except landscape) services is 541310, Architectural Services.
When did the size standard for NAICS 541310 last change?
The most recent Federal Register rule on record that names NAICS 541310 in the SBA's size standards is "Small Business Size Standards: Adjustment of Monetary-Based Size Standards, Disadvantage Thresholds, and 8(a) Eligibility Thresholds for Inflation" (87 FR 69118), published Nov 17, 2022 and effective Dec 19, 2022.
How much do federal agencies spend under NAICS 541310?
Federal contracts under NAICS 541310 obligated $724,408,545 in fiscal year 2025 and $4,082,324,230 in fiscal years 2023 through 2027.
Who are the largest contractors under NAICS 541310?
The contractors with the most obligated under NAICS 541310 in fiscal years 2026 and 2027 are National Institute Of Building Sciences ($41,912,184); HDR Engineering Inc. ($33,354,828); and North Arrow, Inc. ($26,577,313).
Which agencies buy the most under NAICS 541310?
The agencies that obligated the most under NAICS 541310 in fiscal years 2026 and 2027 are General Services Administration ($113,611,659), Department of the Army ($71,908,302) and Department of State ($62,607,884).
Which PSC codes are used with NAICS 541310?
The PSC codes with the most obligated under NAICS 541310 in fiscal years 2026 and 2027 are C219 Other Architect and Engineering Services; C211 Architect – Engineer Services (including landscaping, interior layout, and designing); and C1AA Architect and Engineering – Construction: Office Buildings.
Where is the work under NAICS 541310 performed?
By place of performance, the states with the most contract obligations under NAICS 541310 over the last 12 months are the District of Columbia ($125,119,045), Alaska ($50,792,874) and California ($46,578,682).
What is the latest contract opportunity under NAICS 541310?
The latest contract opportunity under NAICS 541310 is Indefinite delivery/ indefinite quantity (IDIQ) contract for architect-engineer (a-E) services for facilities with secured spaces located throughout naval facilities engineering systems command area of responsibility, worldwide, solicitation from Naval Facilities Engineering Command (Navy), posted November 5, 2026.
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