Building construction phases: guide to proper planning and activity management

The construction of buildings is a complex process that requires careful planning and meticulous management of the various phases of building construction. This article provides you with a detailed guide on the phases of building construction, from initial planning to final testing.

Enhancing this immersive guide, we’ve curated an exclusive video demonstration showcasing how a BIM management system works, simplifying complex workflows and bringing unprecedented efficiency to every stage of construction—transforming traditional building processes into an intelligent, integrated ecosystem of design and execution.

Prepare to unlock the secrets of architectural innovation and construction excellence!

The phases of building construction

The construction of a building can be divided into two main phases:

1. design phase – in which the works to be carried out, the timelines, costs, and potential risks are defined;
2. executive phase – the most operational part, in which the design forecasts are realized, with the need to adapt to the variables that emerge on site.

In this article, we will focus mainly on the executive phase, which is related to the physical construction of the building. If you want to delve into the design phase, I recommend reading the dedicated article “What are the 5 stages of architectural design?” that illustrates it in detail.

Construction site phase for building construction

What are the phases of a construction project?

A construction project is not limited to the installation of materials: it is a structured path that develops through several successive steps. Each phase has a specific role and contributes to the realization of the final work, from site preparation to final testing. Knowing the order and characteristics of these phases is essential for correctly planning timelines, costs, and resources.

Phases of building construction

Pre-construction phase: site preparation and setup

Site preparation is the first fundamental step for any construction project. It includes:

• removal of vegetation and land clearing, to ensure a clean and stable base;
• land leveling, necessary to create a uniform surface on which to build.

After site preparation, the necessary equipment (cranes, concrete mixers, etc.) is brought on site, and fencing is set up to prevent unauthorized access and to protect workers and materials present on the site.

Excavation and initial new construction works

The ground is excavated to remove the soil necessary to create a solid base for the foundations. This process is crucial to ensure the stability of the entire structure.

Once the excavation is completed, the ground is leveled, and the construction of the foundations begins. These can vary depending on the project and the type of soil, but they always serve the same purpose: to support the entire building. Formwork is also prepared to contain the concrete until it fully hardens.

Building foundations

Structural phase: construction of the skeleton and floors

This phase includes the construction of the columns and/or load-bearing walls, which will support the various floors of the building. After the vertical structures, the construction of the floors that separate the different levels of the building, as well as the stairs and elevator shafts, is carried out.

Roofs and vertical closures: completion of the building envelope

The roof is the terminal element of a building and serves to protect the building from the elements. It can be of various types, such as flat roof, gable or hipped roof, butterfly roof.

I recommend reading the article “How to design a roof, the guidelines” so you can learn more about this architectural element.

Regarding infill walls, it is important to remember that they are not load-bearing, which means they do not directly support the weight of the building. This implies that infill walls are responsible for covering the empty spaces between the load-bearing structures of the building, acting as a protective barrier and defining the external envelope of the building itself.

MEP systems: electrical, HVAC, and plumbing installation

Plumbing, electrical, gas, and telephone systems are necessary for the operation of the building. The electrical network is laid out, and the necessary devices are installed.

HVAC (heating, ventilation, and air conditioning) systems are also installed to ensure a comfortable environment.

Safety and health planning on site

Safety is a fundamental aspect of every phase of the process. In this phase, prevention and protection plans, signage, and operating procedures are implemented to minimize risks for workers and ensure a safe working environment.

Final phase: finishes, terminal systems, and testing

Finally, the installation of finishes is carried out, which includes:

• plastering, to smooth and protect surfaces;
• frames (doors and windows), to complete the envelope;
• flooring, with various materials depending on the project;
• painting, for protection and aesthetic appeal.

In completion, testing and functional tests of the systems and structures are performed to ensure compliance with regulations and quality standards.

The construction phases of a house compared to a commercial building

The construction of a house and that of a commercial building largely follow the same main phases (design, foundations, structure, systems, and finishes). However, the differences are significant in terms of size, complexity, and regulatory requirements.

In residential buildings, priorities mainly concern comfort, energy efficiency, and aesthetic quality. Construction times are generally shorter, and the scale of the intervention is reduced.

In commercial buildings, however, additional aspects come into play: the management of spaces open to the public, higher structural loads, fire safety, accessibility, and the integration of complex technological systems. For a dedicated in-depth article, you can read this article on commercial building construction.

House vs Commercial Building: priorities

Common challenges in every phase of construction

Every phase of the construction process presents obstacles and critical issues that must be addressed with expertise:

• pre-construction: delays in permits, zoning constraints, and land-related issues;
• excavation and foundations: unforeseen geotechnical issues or adverse weather conditions that slow down work;
• structure and envelope: difficulties in managing material supplies or quality checks;
• MEP systems: coordination among different installation teams and potential design conflicts;
• finishes: tight deadlines and the need to maintain high execution quality.

Careful management and good coordination among designers, contractors, and suppliers are essential to reduce the impact of these challenges on work progress.

How to monitor and document work progress with BIM

Site monitoring is crucial to meet project timelines, costs, and quality. The use of BIM (Building Information Modeling) allows for complete and real-time control over all construction activities.

With integrated digital tools, it is possible to:

• compare the actual state of work with the planned schedule;
• accurately document progress, changes, and approvals;
• improve communication among all parties involved;
• reduce errors and data duplication.

If you want to explore how digital technology can revolutionize site management, I recommend reading this article on BIM construction management.

The construction phases of a building are a complex process that requires planning, coordination, and adaptability. From site preparation to final testing, every step is crucial to ensure safety, quality, and efficiency.

Today, the support of digital technologies, particularly BIM, enables a more precise and collaborative management of the entire lifecycle of the project.

Discover how to improve the management of your construction projects with the BIM Management System useful for organizing and managing the entire process.

FAQ – Phases of building construction

What is the difference between the design phase and the execution phase?

The design phase serves to define objectives, timelines, costs, and risks in advance, while the execution phase pertains to the actual construction, with all the variables that arise directly on site.

What does the pre-construction phase include?

It is the preparatory phase in which the site is set up, the land is cleared and leveled, and equipment and fencing are installed to ensure safety and operational order.

Why are foundations considered critical?

Foundations are responsible for transferring the loads of the structure to the ground, ensuring stability for the entire building regardless of type or size.

How does building a house differ from constructing a commercial building?

Residential buildings focus on comfort, energy efficiency, and aesthetics, while commercial buildings must meet additional requirements such as fire safety, accessibility, and management of public spaces.

What are the most common critical issues in a construction project?

Each phase can present obstacles: zoning constraints in pre-construction, unforeseen geotechnical issues during excavation, delays in material supply for the structure, and coordination difficulties among installers during the installation of systems.

How does BIM improve site management?

BIM allows for real-time monitoring of progress and changes, documenting each phase, comparing work with the schedule, and reducing errors through clearer communication among designers, contractors, and suppliers.