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Construction

CPV 451|Site preparation

Preparation of construction sites, earthworks and site development

Examples

Site setup and securingExcavation and gradingClearing and tree fellingOrdnance clearanceSoil investigationTerrain modelling

CPV Code 451, Site Preparation

What does CPV code 451 cover?

CPV code 451 (Site preparation) covers all services that must be performed before actual construction begins. This includes site setup and securing, earthworks such as excavation, grading and terrain modelling, as well as preparatory measures like clearing, tree felling and disposal of contaminated soil. Ordnance clearance and soil investigations also fall under this code.

These services are essential for any construction project start. Without proper site preparation, no building construction, infrastructure project or civil engineering work can begin. CPV code 451 thus forms the foundation of the entire construction procurement chain.

Who uses this CPV code?

Public contracting authorities such as municipalities, state authorities and federal institutions regularly tender site preparation works. Particularly common areas include municipal construction projects for residential and commercial developments, infrastructure projects requiring extensive earthworks, remediation and demolition projects, and military property clearance.

Typical bidders are civil engineering companies, demolition firms, earthworks contractors and specialised ordnance clearance services.

How does Patterno help?

With Patterno HIT, companies in the site preparation sector find relevant tenders daily across all 4,500+ European procurement portals. Instead of manually searching DTVP, Vergabe24, Staatsanzeiger and dozens of other platforms, Patterno delivers qualified matches straight to the inbox.

Patterno BID for construction goes further: the AI-powered calculation agent supports the processing of bills of quantities. Especially for earthworks with hundreds of individual items (different soil classes, transport distances, compaction levels), automated calculation saves considerable time.

Typical tender volumes

Site preparation typically accounts for 5–15% of total construction volume. For a building project worth EUR 10 million, site preparation can amount to EUR 500,000–1,500,000. For major infrastructure projects, volumes are often significantly higher.

Current Tenders, CPV 451

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Restoration of Damp Marina

Demolition and renewal of shore protection Pier E in Damp marina: Demolition and disposal of the shore enclosure "Pier E" and stern piles, demolition of the existing shore wall with back-anchoring and embankment, pulling of stern piles, installation of new steel piles as pier foundation, profiling and construction of a riprap embankment, construction of the new Pier E with land connections and technical equipment, and placement of new stern piles. The renewal of the shore embankment will be as a riprap embankment with an integrated pier system and optional placement of new stern piles. Georeference: ETRS 1989 UTM Zone 32N; Height reference: m NHN (DHHN2016). The execution period is 87 calendar days.

Kurbetriebe Damp GmbH

·Damp
Deadline:November 23, 2026

Maintenance Dredging for the Port of Waterford

Maintenance dredging for the Port of Waterford: term-measured dredging to maintain depth in the navigational channel, turning circle, and berths at the Port of Waterford, Southeast Ireland. The work is to be executed by a modern Trailing Suction Hopper Dredger with at least two campaigns annually.

Port of Waterford Company

·Waterford
Deadline:November 23, 2026

Modernization and expansion of the wastewater treatment plant in Marczyce

Modernization and expansion of the wastewater treatment plant in Marczyce (plots no. 11/5, 180/1) as Stage I, while maintaining operation of the old facility (plot no. 12/12) and decommissioning it after commissioning the new installation. The service is provided under a "Design and Build" contract and includes comprehensive project design with conceptual, cost, and technological documentation, along with detailed Technical Specifications for Execution and Acceptance of Construction Works (STWiORB/WWiORB), obtaining all necessary approvals, permits, and legal documents. The facility must ensure full technological functionality for a capacity of 12,500 PE (Population Equivalent) and an average daily flow rate of 1,630 m³/d. Land and technical reserves for future expansion must be provided, including physical technical reserves for future connections such as blind flanges, shut-off valves, free connection stubs on pipelines and collectors, power reserves on main distribution boards, free cable routes, and a minimum 25% spatial and signal reserve in control cabinets and the SCADA system. The construction work includes a new mechanical-biological wastewater treatment plant, reception of up to 100 m³/d of delivered wastewater and its buffering, and safe reception of increased instantaneous flows during heavy rainfall up to 280 m³/h (77.8 l/s). The continuous operation of the existing facility on plot no. 12/12 must be maintained, followed by its complete decommissioning and maintenance after stable commissioning of the new installation. A complete system for discharging treated wastewater to the recipient must be implemented, primarily into the Czerwonka stream. A detailed hydrological analysis and capacity analysis of the existing outlet to the Czerwonka stream must be performed. Optionally, the construction of an alternative, complete pressure-gravity system to the Podgórna stream is foreseen if the existing outlet is insufficient. This system includes a pressure pipeline 250PE SDR11 PN16 and a gravity section Dn400 PVC SN8 with a DN 400 outlet structure in a stone wall at km 3+311 of the Podgórna stream, running through plot no. 11/5 (Marczyce) and plots in Podgórzyn (no.: 355/2, 509/5, 627/4, 468/1, 473/14, 462/9, 330/8, 532/2, 536/3 and 536/2). Another option is the removal of conflicts with overhead MV 20 kV lines.

Gmina Podgórzyn

·Podgórzyn
Deadline:November 12, 2026
€149,024

Restoration of the Korģe watercourse in Aloja, Limbaži

Restoration of the state-significant Korģe watercourse in Aloja parish, Limbaži municipality.

Valsts sabiedrība ar ierobežotu atbildību “Zemkopības ministrijas nekustamie īpašumi”

·Rīga
Deadline:November 23, 2026

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