A double-storey property extension in the UK is a fantastic way to add significant space and value to your home. This type of extension allows homeowners to expand their living space across two floors, often adding additional bedrooms, bathrooms, or extended living and kitchen areas. Here is a comprehensive overview of the process, timeline, required documentation, and the benefits it brings to both your property's value and everyday life.

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Process of a Double-Storey Property Extension

1. Initial Consultation and Design: The process begins with an initial consultation, where we discuss your needs, budget, and vision for the extension. A detailed survey of your property is carried out, followed by the creation of architectural designs that align with your requirements. During this phase, you will have the opportunity to refine and approve the designs.

2. Planning Permission: In the UK, most double-storey extensions will require planning permission, as they significantly alter the exterior of the property. Our team handles the submission of planning applications, ensuring that the designs comply with local council regulations and planning guidelines. The approval process typically takes about 8-12 weeks, depending on the local council.

3. Party Wall Agreement: If your property shares a boundary with a neighbor, a party wall agreement may be required before construction can begin. This legal agreement ensures that both you and your neighbors are aware of the planned works and any potential impact. We assist in preparing and securing this agreement as part of our service.

4. Building Regulations Approval: In addition to planning permission, a double-storey extension must comply with UK building regulations, which ensure the safety and structural integrity of the new build. This involves structural calculations, inspections, and approval from building control. Our team manages this process, ensuring a smooth progression through each stage.

5. Construction Phase: Once all permissions and approvals are in place, the construction phase begins. This typically involves groundwork and foundations, followed by the erection of the new structure, roofing, and connection to the existing building. Once the external shell is complete, interior works like plumbing, electrical installations, plastering, and finishing are carried out.

6. Final Inspection and Handover: After construction is completed, a final inspection is carried out to ensure compliance with building regulations and quality standards. The finished extension is then handed over to you, ready for use.

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Timeline

The total duration for a double-storey extension can vary depending on the complexity of the project and the speed of planning permission approvals. Generally, the entire process can take around 5-8 months, broken down as follows:

• Planning and Design Phase: 2-3 months (including obtaining planning permission)

• Construction Phase: 3-5 months (depending on the size and scope of the extension)

This timeline can be influenced by factors such as weather conditions, availability of materials, and any unforeseen site-specific challenges.

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Necessary Documents

For a successful double-storey extension, the following documents are typically required:

• Planning Permission Approval: As issued by the local council after submission of architectural plans.

• Party Wall Agreement: If applicable, this document formalizes the agreement between you and your neighbors.

• Building Regulations Approval: To confirm compliance with safety and structural standards.

• Structural Calculations: Prepared by a structural engineer, ensuring the extension’s stability and durability.

• Detailed Construction Plans: Including all design elements and technical specifications.

Our team manages the preparation and submission of these documents, ensuring a seamless and hassle-free process.

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Value Added to the Property and Lifestyle

A double-storey extension is a substantial investment that can significantly enhance both the value of your property and your quality of life. Here’s how:

• Increased Property Value: On average, a well-executed double-storey extension can increase the value of a property by 15-25%, depending on the location, quality of the build, and how well it blends with the existing structure. This makes it a valuable addition for those considering selling their home in the future.

• Enhanced Living Space: The added space can transform the way you use your home. It allows for the creation of additional bedrooms, a larger kitchen-dining area, or even a home office, making your living arrangements more comfortable and suited to your lifestyle.

• Tailored Functionality: With a double-storey extension, you can tailor the new space to meet your family's needs, whether it’s creating a luxurious master suite, a spacious open-plan living area, or a much-needed extra bathroom. This customization makes daily living more convenient and enjoyable.

• Improved Aesthetic Appeal: A well-designed extension not only increases space but can also enhance the overall look and feel of your property, giving it a more modern and appealing appearance that complements its original character.

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In summary, a double-storey extension is an ideal choice for homeowners looking to expand their living space without moving. It provides a practical solution to accommodate a growing family or changing lifestyle needs, while also offering a sound investment by boosting property value. With careful planning, expert guidance, and attention to detail, this type of project can truly transform your home.