Exploring the Pros and Cons of Working with Small On-Site Builders vs. Large Prefab Companies for Your Garden Room Project

When it comes to building a garden room, you have a multitude of options available to you. One crucial decision you’ll face is whether to work with a small company that builds bespoke structures on-site or to opt for a larger company that specializes in prefabricated garden rooms. Both options have their unique advantages, and in this blog post, we will delve into the pros and cons of each approach. By the end, you’ll be equipped with the knowledge needed to make an informed decision that best suits your specific requirements.

Small On-Site Builders: The Personal Touch


  • Customisation and Flexibility: One of the major advantages of working with a small company that builds bespoke garden rooms on-site is the unparalleled level of customisation and flexibility. These builders can tailor the design, size, layout, and features of your garden room to meet your exact specifications. This personal touch ensures that your garden room is a true reflection of your style and needs.
  • Attention to Detail: Smaller companies often pride themselves on their meticulous craftsmanship and attention to detail. With a dedicated team of skilled craftsmen working on-site, you can expect a higher level of precision in the construction process. Every element, from the choice of materials to the finishing touches, can be carefully curated to create a garden room of exceptional quality.
  • Direct Communication and Collaboration: Working with a small company typically means you’ll have direct access to the builder and the team involved in your project. This direct communication fosters a collaborative relationship, allowing you to easily discuss any ideas, concerns, or changes throughout the construction process. It also enables quick decision-making and a greater sense of involvement in the project.
  • Cost Efficiency: Smaller companies are often leaner in their operations, which can translate into cost efficiencies. With fewer overhead expenses and a more focused approach, small on-site builders may offer competitive pricing for their bespoke garden rooms. This can be particularly advantageous for those looking for high-quality craftsmanship and customization without breaking the bank.
  • Accommodating Difficult Access: Small on-site builders excel in accommodating challenging access requirements, especially in areas with limited or steep access, such as gardens in urban environments like London. They have experience working in tight spaces and can find innovative solutions to transport materials and equipment to the construction site. This capability eliminates potential logistical obstacles and ensures that your garden room can be built even in areas with poor access.

Large Prefab Companies: Speed and Convenience


  • Speedy Construction: Prefabricated garden rooms are constructed off-site, often in factory-controlled environments. This allows for a streamlined process and faster construction time. Since the components are pre-made, they can be quickly assembled on your property, reducing the time spent on-site and minimizing disruption to your daily routine.
  • Quality Control: Established prefab companies have robust quality control measures in place to ensure consistency and adherence to building standards. The controlled factory environment allows for precise manufacturing techniques, minimizing the risk of errors or inconsistencies in the final product. This means you can expect a high level of quality and durability from a prefabricated garden room.
  • Convenience: Prefabricated garden rooms offer a convenient solution, as the majority of the construction takes place off-site. This minimises the impact on your property and reduces the disruption to your daily life. Additionally, prefab garden rooms can often be delivered and installed within a shorter timeframe compared to on-site construction.


  • Limited Customisation: While some prefab companies offer customisation options, they are usually more limited compared to what you can achieve with on-site builders. The range of design choices, sizes, and layouts may be more restricted, which may not suit those seeking a highly personalised garden room.
  • Higher Cost: Large prefab companies can sometimes be more expensive compared to working with small on-site builders. The standardized designs and manufacturing processes can lead to higher upfront costs, although it’s important to consider the long-term value and durability provided by prefabricated garden rooms.


When deciding between a small on-site builder and a large prefab company for your garden room project, it’s essential to consider your priorities and budget. Making a like-for-like comparison is crucial, as it allows you to evaluate the specific offerings and benefits of each option.

Small on-site builders provide the personal touch, attention to detail, direct communication, cost efficiency, and the ability to accommodate difficult access requirements. They offer a bespoke experience that is tailored to your needs and can often provide competitive pricing.

Large prefab companies offer speedy construction, quality control, and convenience. They excel in delivering standardized designs with a focus on efficiency and durability.

Bespoke doesn’t always mean more expensive. Small on-site builders, with their ability to customize every aspect of your garden room and their cost-efficient operations, can often offer competitive pricing without compromising on quality. It’s vital to discuss your requirements and budget with both types of companies to get accurate quotes and understand the full scope of their services.

Ultimately, the decision should be based on your individual needs, desired level of customization, timeline, and budget. Consider the pros and cons outlined in this blog post, seek recommendations, review portfolios, and communicate with different companies to make an informed choice that aligns with your vision for your garden room. Whichever route you choose, a beautiful and functional garden room awaits, adding value and enjoyment to your outdoor space.