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What to Ask A Home Extension Builder Before Work Begins

What to Ask A Home Extension Builder Before Work Begins Image

We explore what to ask your builder before home extension work begins. Ensure they're fully qualified, insured, and experienced. Protect your project with expert guidance first.

Are You Fully Qualified and Insured?

Before selecting a builder for your home extension, ensure they are fully qualified and adequately insured. Qualifications show that the builder has received proper training and meets the industry standards required to complete your project safely and effectively. Ask to see proof of certifications and training relevant to building works, such as construction NVQs or diplomas.

Equally important is insurance coverage. Builders should have public liability insurance, which protects you if something goes wrong during the project. Without this coverage, you could be responsible for any accidents or damage. Always confirm insurance documents and check expiry dates to ensure all policies remain valid throughout the duration of your building project.

Can I See Examples of Your Previous Work?

Viewing examples of previous work helps you understand the quality, style, and standard of the builder’s finished projects. Ask for a portfolio containing photos or visit completed sites personally if possible. 

This can help you visualise how your extension might look upon completion. Pay particular attention to the quality of finishes, attention to detail, and overall workmanship. If you notice uneven surfaces, poorly fitted fixtures, or any signs of cutting corners, this could indicate lower quality standards.

What to Ask Your Builder Before Home Extension Work Begins

When examining previous work, also consider the scale and complexity of these projects. Are they similar to your planned extension? 

For example, if you are planning a large kitchen extension with detailed architectural elements, check if the builder has successfully completed similar projects. Also, note whether the builder maintains a tidy and safe workspace.

Cleanliness and organisation on-site can reflect the professionalism and discipline of the builder. Don’t hesitate to ask detailed questions about the projects shown to clarify any concerns or specific aspects related to your project. 

This proactive approach ensures your home extension aligns precisely with your expectations and quality standards.

Can You Provide References from Other Clients?

References from previous clients offer valuable insights into the builder's reliability and professionalism. Ask for contact details of past clients and follow up by speaking directly to them. 

Good questions to ask include whether the builder completed the project on time and within budget, if there were any unexpected problems, and how these were handled.

Also, enquire if they would hire the builder again or recommend them to friends and family. Reliable builders will readily offer references, reflecting confidence in their past performance and customer satisfaction. This process will give you peace of mind, confirming that you are selecting a builder who is trustworthy, competent, and capable of delivering high-quality work for your home extension.

Do You Have Experience with My Type of Extension?

Not all home extensions are the same. It is crucial to select a builder who has specific experience with your particular type of extension, whether it's a single-storey kitchen extension, a multi-storey addition, or a loft conversion. 

Builders experienced in specific extensions are familiar with unique challenges, planning permissions, and building regulations associated with these projects. They will be better prepared to handle potential issues efficiently and effectively.

Type of Extension - What to Ask Your Builder

Discuss your extension plan in detail and ask about the builder’s direct experience with similar projects. For example, if your extension involves significant structural changes, verify if the builder has managed such alterations before, including handling steelwork or substantial groundwork. 

Additionally, query how the builder approaches project management, particularly for complex extensions involving multiple tradespeople and tight schedules.

The builder’s familiarity with relevant materials and technologies is also crucial. Ask about the materials they recommend and why, ensuring they align with your aesthetic and durability requirements. 

Experienced builders will suggest suitable solutions tailored to your specific extension type, helping to maximise your home's potential and value.

Will You Handle Planning Permission and Building Regulations?

Planning permission and building regulations are critical elements of most home extensions. Clarify from the outset if the builder will handle these responsibilities on your behalf. 

Experienced builders often manage planning applications, provide architectural drawings, and liaise with local councils to secure approvals. Confirm whether these services are included in their quotation or if they attract extra charges.

Builders familiar with local council requirements can streamline the approval process significantly, potentially saving you time and avoiding bureaucratic delays. If they do not provide these services, ensure you clearly understand your responsibilities regarding obtaining necessary approvals. Knowing this information upfront prevents confusion, delays, and additional unforeseen costs once your project begins.


We provide high-quality home extensions in Croydon. From single to double-storey extensions, we deliver reliable services that can enhance your home’s value, space, and overall appeal.