skip to Main Content
Timeline Of A Home Extension

How Long Does It Take to Build a Home Extension? A Comprehensive Timeline of a Home Extension

Discover the factors that influence the duration of a home extension project and learn about the key milestones in the construction timeline.


Building a home extension is an exciting way to add more space and value to your property. However, one of the most common concerns for homeowners is how long the process will take. In this blog post, we will break down the typical timeline for a home extension project, discuss the factors that can influence the duration, and provide tips for ensuring a smooth and efficient construction process.

Factors Influencing the Timeline of a Home Extension

Several factors can impact the duration of your home extension project. Some of these include:

  • Project size and complexity: Larger and more complex home extensions generally take longer to complete than smaller, simpler projects.
  • Planning permission and permits: Obtaining the necessary planning permission and building permits can add to the project timeline, especially if revisions or appeals are required.
  • Weather conditions: Adverse weather can cause construction delays, particularly during the foundation and framing stages.
  • Contractor availability and workload: Busy contractors may have a longer lead time before they can start your project, and their work schedule can impact the overall duration.
  • Supply chain and material availability: Delays in sourcing materials or labor shortages can extend the construction timeline.

The Typical Home Extension Timeline

While every project is unique, a general outline of the stages and their durations can help you understand the home extension process:

  • Initial consultation and design (2-4 weeks): Discuss your project with an architect or designer to develop initial plans and ideas.
  • Planning permission and building regulations (6-12 weeks): Submit your plans for approval and obtain any necessary permits.
  • Contractor selection (2-4 weeks): Research, interview, and choose a reliable contractor for your project.
  • Finalizing design and materials (1-3 weeks): Refine your design and choose materials, fixtures, and finishes.
  • Site preparation and foundation (1-3 weeks): Clear the site, establish utilities, and pour the foundation.
  • Framing and structure (2-4 weeks): Build the walls, floors, and roof structure for your extension.
  • Roofing, windows, and doors (1-2 weeks): Install the roof covering, windows, and external doors.
  • Plumbing, electrical, and HVAC (2-4 weeks): Rough-in utilities and install heating, cooling, and ventilation systems.
  • Insulation, drywall, and interior finishes (3-5 weeks): Install insulation, hang drywall, and complete the interior finishes, including flooring and painting.
  • Final inspections and cleanup (1-2 weeks): Ensure all work meets building codes and regulations and perform a final cleanup.

Tips for a Smooth and Efficient Home Extension Project

To keep your home extension project on track, consider these tips:

  • Plan ahead: Spend ample time in the planning and design phase to minimize delays and costly changes during construction.
  • Be decisive: Make material and design decisions promptly to avoid waiting on selections.
  • Communicate regularly: Maintain open communication with your contractor and design team to address any concerns or changes as soon as possible.
  • Be prepared for delays: Understand that unforeseen challenges can arise during construction, so be flexible and prepared to adjust your timeline if necessary.


The timeline for a home extension project can vary significantly based on factors such as project size, planning permission, and contractor availability. However, by understanding the general stages of construction and maintaining good communication with your design and construction team, you can help ensure a successful and timely home extension project. Keep in mind that the ultimate goal is to create a beautiful, functional space that adds value to your home and enhances your quality of life.

When it comes to home extensions in Aberdeen, Steen Building Services should be your first port of call. With a reputation for excellence, our team of experienced professionals is dedicated to providing exceptional design and construction services tailored to your specific needs. As a local company, we understand the unique architectural styles and building requirements in the region, ensuring that your home extension seamlessly integrates with your existing property. Our commitment to quality, transparent communication, and customer satisfaction sets us apart in the industry, making Steen Building Services the go-to choice for homeowners seeking a stress-free, efficient, and timely home extension project in Aberdeen.

Check out examples of our work on Facebook and Instagram

You may find these blogs interesting;

How can I estimate the total duration of my home extension project?

While every project is unique, you can get a rough estimate by considering the size and complexity of your extension, the time required for planning permission and permits, and the availability of your chosen contractor. Discuss your project with an experienced professional who can provide a more accurate timeline based on your specific needs and requirements.

Can I speed up the construction process for my home extension?

While some factors are beyond your control, such as weather or material availability, you can help expedite the process by being decisive with design and material choices, maintaining open communication with your contractor, and addressing any issues promptly. However, keep in mind that rushing a project can sometimes compromise quality, so it’s essential to strike a balance between speed and excellence.

What should I do if my home extension project is taking longer than expected?

If your project is delayed, communicate with your contractor to understand the cause and discuss possible solutions. Delays can occur for various reasons, such as weather, material shortages, or changes to the design. Being flexible and understanding can help keep the project moving forward, but also ensure that any concerns are addressed to maintain the quality of the finished extension.

How can I minimise disruptions to my daily life during the home extension process?

Talk with your contractor about establishing a construction schedule that works for both parties, and set clear expectations for noise levels, working hours, and access to your property. Establishing a designated area for construction materials and debris can also help keep your living space organised and minimise disruptions.

Do I need to be present during the construction of my home extension?

While it’s not necessary for you to be present throughout the entire construction process, maintaining regular communication with your contractor and attending key milestones, such as inspections or design meetings, can help ensure your project stays on track and meets your expectations.

How do I handle unexpected issues or changes during the construction process?

Open communication with your contractor is essential for addressing unexpected issues or changes. Be proactive in discussing any concerns, and work together to find solutions that maintain the quality and integrity of your home extension while keeping the project on schedule. Remember that flexibility and adaptability are key components of a successful construction project.

houzz logo
bark logo
yell logo
yelp logo
Back To Top