Site Preparation Contractors
Description
この産業は、主にサイト準備活動、たとえば掘削と整地、建物のおよびその他の構造物の解体、および浄化槽の設置に主に従事する事業所で構成されています。建設、非建設、鉱山など、あらゆる種類のサイトの土壌掘削と土地整理が含まれます。オペレーター（クレーンを除く）を備えた建設機械のレンタルを行う事業所も含まれます。 例: 爆破、建物解体 建物の内部の清掃と取り外し 解体用のコンクリートの破壊と切断 新しい権利の道を切り開く 解体、建物と構造物 外部解体請負業者 基礎掘削（つまり、掘削） 基礎掘削請負業者 建設現場の整地 内部解体請負業者 排水請負業者 建設用の土壌移動 建設用機械のレンタル（クレーンを除く）、オペレーター付き 掘削、土壌掘削、または土地整理請負業者 線切りまたは切断（メンテナンスを除く） 浄化槽請負業者 （水下を除く）のトンネル掘削 （危険物を除く）の地下タンクの撤去 建物の解体 建物の完全な解体
Hierarchy
| Code | Title | Description |
|---|---|---|
| 23 | Construction 2-digit sector | The Sector as a Whole The Construction sector comprises establishments primarily engaged in the construction of buildings or engineering projects (e.g., highways and utility systems). Establishments primarily engaged in the preparation of sites for new construction and establishments primarily engaged in subdividing land for sale as building sites also are included in this sector. Construction work done may include new work, additions, alterations, or maintenance and repairs. Activities of these establishments generally are managed at a fixed place of business, but they usually perform construction activities at multiple project sites. Production responsibilities for establishments in this sector are usually specified in (1) contracts with the owners of construction projects (prime contracts) or (2) contracts with other construction establishments (subcontracts). Establishments primarily engaged in contracts that include responsibility for all aspects of individual construction projects are commonly known as general contractors, but also may be known as design-builders, construction managers, turnkey contractors, or (in cases where two or more establishments jointly secure a general contract) joint-venture contractors. Construction managers that provide oversight and scheduling only (i.e., agency) as well as construction managers that are responsible for the entire project (i.e., at risk) are included as general contractor type establishments. Establishments of the "general contractor type" frequently arrange construction of separate parts of their projects through subcontracts with other construction establishments. Establishments primarily engaged in activities to produce a specific component (e.g., masonry, painting, and electrical work) of a construction project are commonly known as specialty trade contractors. Activities of specialty trade contractors are usually subcontracted from other construction establishments, but especially in remodeling and repair construction, the work may be done directly for the owner of the property. Establishments primarily engaged in activities to construct buildings to be sold on sites that they own are known as for-sale builders, but also may be known as speculative builders or merchant builders. For-sale builders produce buildings in a manner similar to general contractors, but their production processes also include site acquisition and securing of financial backing. For-sale builders are most often associated with the construction of residential buildings. Like general contractors, they may subcontract all or part of the actual construction work on their buildings. There are substantial differences in the types of equipment, work force skills, and other inputs required by establishments in this sector. To highlight these differences and variations in the underlying production functions, this sector is divided into three subsectors. Subsector 236, Construction of Buildings, comprises establishments of the general contractor type and for-sale builders involved in the construction of buildings. Subsector 237, Heavy and Civil Engineering Construction, comprises establishments involved in the construction of engineering projects. Subsector 238, Specialty Trade Contractors, comprises establishments engaged in specialty trade activities generally needed in the construction of all types of buildings. Force account construction is construction work performed by an enterprise primarily engaged in some business other than construction for its own account, using employees of the enterprise. This activity is not included in the construction sector unless the construction work performed is the primary activity of a separate establishment of the enterprise. The installation and the ongoing repair and maintenance of telecommunications and utility networks is excluded from construction when the establishments performing the work are not independent contractors. Although a growing proportion of this work is subcontracted to independent contractors in the Construction sector, the operating units of telecommunications and utility companies performing this work are included with the telecommunications or utility activities. |
| 238 | Specialty Trade Contractors 3-digit subsector | The Specialty Trade Contractors subsector comprises establishments whose primary activity is performing specific activities (e.g., pouring concrete, site preparation, plumbing, painting, and electrical work) involved in building construction or other activities that are similar for all types of construction, but that are not responsible for the entire project. The work performed may include new work, additions, alterations, maintenance, and repairs. The production work performed by establishments in this subsector is usually subcontracted from establishments of the general contractor type or for-sale builders, but especially in remodeling and repair construction, work also may be done directly for the owner of the property. Specialty trade contractors usually perform most of their work at the construction site, although they may have shops where they perform prefabrication and other work. Establishments primarily engaged in preparing sites for new construction are also included in this subsector. There are substantial differences in types of equipment, work force skills, and other inputs required by specialty trade contractors. Establishments in this subsector are classified based on the underlying production function for the specialty trade in which they specialize. Throughout the Specialty Trade Contractors subsector, establishments commonly provide both the parts and labor required to complete work. For example, electrical contractors supply the current-carrying and noncurrent-carrying wiring devices that are required to install a circuit. Plumbing, heating, and air-conditioning contractors also supply the parts required to complete a contract. Establishments that specialize in activities primarily related to heavy and civil engineering construction that are not normally performed on buildings, such as the painting of lines on highways, are classified in Subsector 237, Heavy and Civil Engineering Construction. Establishments that are primarily engaged in selling construction materials are classified in Sector 42, Wholesale Trade, or Sector 44-45, Retail Trade, based on the characteristics of the selling unit. |
| 2389 | Other Specialty Trade Contractors 4-digit industry group | This industry group comprises establishments primarily engaged in site preparation activities and in specialized trades (except foundation, structure, and building exterior contractors; building equipment contractors; and building finishing contractors). The specialty trade work performed includes new work, additions, alterations, maintenance, and repairs. |
| 23891 | Site Preparation Contractors 5-digit NAICS industry | See industry description for 238910. |
| 238910 | Site Preparation Contractors 6-digit U.S. detail | この産業は、主にサイト準備活動、たとえば掘削と整地、建物のおよびその他の構造物の解体、および浄化槽の設置に主に従事する事業所で構成されています。建設、非建設、鉱山など、あらゆる種類のサイトの土壌掘削と土地整理が含まれます。オペレーター（クレーンを除く）を備えた建設機械のレンタルを行う事業所も含まれます。 例: 爆破、建物解体 建物の内部の清掃と取り外し 解体用のコンクリートの破壊と切断 新しい権利の道を切り開く 解体、建物と構造物 外部解体請負業者 基礎掘削（つまり、掘削） 基礎掘削請負業者 建設現場の整地 内部解体請負業者 排水請負業者 建設用の土壌移動 建設用機械のレンタル（クレーンを除く）、オペレーター付き 掘削、土壌掘削、または土地整理請負業者 線切りまたは切断（メンテナンスを除く） 浄化槽請負業者 （水下を除く）のトンネル掘削 （危険物を除く）の地下タンクの撤去 建物の解体 建物の完全な解体 |
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Classification References
- 01土地の分割と売却用の土地を建設業者に提供する作業は、産業237210、土地の分割に分類されます。
- 02水道、下水、石油、ガス、電力、および通信などのユーティリティ（例）の配管および関連する建物と構造の建設は、産業グループ2371、ユーティリティシステム建設に分類されます。
- 03土壌の保持または水中のトンネル掘削は、産業237990、その他の重および土木工事建設に分類されます。
- 04オペレーター付きのクレーンレンタルは、産業238990、すべてのその他の専門職の請負業者に分類されます。
- 05採石場または露天鉱からの鉱物の除去前の活動としての過剰な土壌除去は、産業21、鉱業、採石、および石油・ガス採掘に分類されます。
- 06油田の井戸からの水を取り出す掘削は、米国産業213111、油井の掘削に分類されます。
- 07油田でのタンクの解体は、米国産業213112、石油・ガスオペレーションのサポート活動に分類されます。
- 08オペレーターなしの建設機械レンタルは、米国産業532412、建設、鉱業、および林業機械および設備のレンタルおよびリースに分類されます。
- 09オーバーヘッドユーティリティライン用の木や茂みの刈り込みは、産業561730、ランドスケープサービスに分類されます。
- 10放射性物質を含む地下タンクなどの危険物を取り除く核発電所の廃止および環境修復作業は、産業562910、修復サービスに分類されます。
Index Items
航空またはピックアップトラック、建設、オペレーター付きのレンタル
バックフィリング、建設
バックホー、オペレーター付きのレンタル
爆破孔の掘削（鉱業を除く）
爆破、建物解体
爆破、建設現場
掘削、建物の建設用
建物解体
建物の内部の清掃と取り外し
ブルドーザー、オペレーター付きのレンタル
ケーソン（例：掘削された建物の基礎）の建設
セプショール建設
コンクリートの破壊と切断、解体用
建設機械（クレーンを除く）、オペレーター付きのレンタル
コア掘削とテストボーリング、建設用
クレーワトル、オペレーター付きのレンタル
パイまたは橋の除去
権利の新しい切り開
解体業者
建物および構造の解体
排水業者
基礎の掘削
基礎の掘削、建設用
建設現場の土壌移動
解体エンジニアリング構造（例：油貯蔵タンク）の解体
排水システム（例：セプショール、セプティックタンク）の設置
基礎用の掘削されたピエロ（例：建物の基礎）の建設
基礎用の掘削されたシャフト（例：掘削された建物の基礎）の建設
乾燥井戸の建設
建設用の機械、オペレーター付きのレンタル、クレーンを除く
鉱場サイトおよび関連する建設活動、建設業者
ピエの駆動、建物の基礎
ピリング（例：掘削、キャストインプレース、掘削）、建物の基礎、建設業者
パワーショベル、建設、オペレーター付きのレンタル
電力、通信、およびパイラインの権利のクリアランス（メンテナンスを除く）
ダム、堤防、およびその他の重および土木工事の建設の除去
権利の切り開（メンテナンスを除く）
道路の廃止
セプティックシステム業者
セプティックタンクと排水溝の設置
土壌の圧縮
土壌テストボーリング
建設用のテストボーリング
トンネル掘削（水下を除く）
地下タンク（危険物を除く）の除去
排水溝の設置
建物の完全な解体
解体、建物またはその他の構造
How Item Can Help
Site Preparation Contractors use the Warehouse Management System to track and manage inventory of heavy machinery and materials, ensuring optimal stock levels for rapid project mobilization while reducing storage costs.
The Order Management System streamlines the processing of custom quotes and project requests, enabling real-time delivery scheduling that aligns procurement with tight construction deadlines.
Data Intelligence tools analyze historical project costs and resource utilization patterns to provide predictive insights, allowing contractors to negotiate better material prices and allocate resources more efficiently.
Item.com Tools
External Resources
Census.gov NAICS Detail
Official US Census Bureau definition and scope for NAICS 238910.
National Association of Home Builders
Major industry trade association offering standards, education, and advocacy for construction professionals including site preparation contractors.
US General Services Administration
Federal government agency providing resources, procurement opportunities, and regulations for public construction and site work.
Procore
Leading construction management software platform with specific tools and community resources for site preparation project management.
