Key Phases of a Construction Project: From Design to Handover

In the construction sector, poor management can lead to delays, cost overruns, and ultimately, a loss of profitability. A common mistake is underestimating the inherent complexity of each project, overlooking the need to understand and control every stage. A thorough understanding of the phases of a construction project is not merely a theoretical exercise; it's the foundation for successful execution, resource optimisation, and adherence to timelines and budgets.

From the initial concept to the final handover of keys, every project goes through a series of interconnected stages, where planning precision and execution coordination are critical. This article breaks down these phases, providing practical insights for professionals looking to enhance their control and efficiency.

1. Planning and Design Phase: The Soul of the Project

Before a single shovel moves, the project is built on paper. This phase is by far the most critical, as any error here will be exponentially magnified in later stages.

1.1. Feasibility Study and Preliminary Design

Everything begins with the idea and the evaluation of its potential. A feasibility study is conducted to determine if the project is technically, economically, and legally viable. This includes:

• Site analysis: A topographical survey to understand the land's shape, dimensions, and gradients, and a geotechnical study to determine soil characteristics and bearing capacity. These data are crucial for foundation design.
• Needs definition: Client requirements, building use, necessary area, approximate layout, and desired finishes are established.
• Urban planning regulations: Verification of project compatibility with the local Master Plan (or equivalent) and other local regulations (maximum height, setbacks, buildable area, permitted uses).

With this information, the preliminary design is prepared, consisting of schematic drawings, a descriptive report, and an estimated budget. It serves to visualise the proposal and validate the initial project direction with the client.

1.2. Basic and Detailed Design Drafting

Once the preliminary design is approved, the Basic Project and, subsequently, the Detailed Design are drafted.

• Basic Project: This defines the general configuration of the building, its essential characteristics, its relationship with the surroundings, and the justification for the solutions adopted. It includes layout plans, elevations, and sections, along with a descriptive and justificatory report. It is the necessary document for applying for the municipal building permit.
• Detailed Design: This details absolutely all technical aspects of the project. It contains:
  • Report: Describes the project in detail, including general data, involved parties, applicable regulations, technical characteristics of the building, justifications for compliance with Building Regulations (e.g., structural safety, fire safety, health and hygiene, noise protection, energy saving, and accessibility).
  • Drawings: Architectural (floor plans, elevations, sections), structural (foundations, vertical and horizontal structure), services (electrical, plumbing, drainage, HVAC, telecommunications), and construction details.
  • Specification Document: Establishes the technical, economic, and administrative conditions under which the work will be executed, including material quality and execution procedures.
  • Bill of Quantities and Budget: Quantifies all necessary works and materials, broken down by work packages and chapters, and their associated costs. It serves as the basis for procurement and financial control.
  • Health and Safety Study: A fundamental document that analyses occupational risks on site and proposes preventive and protective measures.

Having a complete and rigorous detailed design is the best guarantee for avoiding improvisations and deviations during construction.

2. Permitting and Procurement Phase: Preparing the Legal and Administrative Ground

With the detailed design ready, it's time to obtain the necessary authorisations and select the parties who will bring the project to life.

2.1. Management of Permits and Authorisations

Obtaining the municipal building permit is an unavoidable step. This process can be complex and vary by local authority, but typically requires:

• Submission of the Basic Project and, in some cases, the Detailed Design.
• Payment of fees and taxes (e.g., Construction, Installations and Works Tax, urban planning fees).
• Obtaining sectoral reports if necessary (environmental, heritage, highways, etc.).
• Approval of the Health and Safety Plan