Space on Two Levels
A double-storey extension adds space upstairs and down in one coordinated build. Cooksey Renovation manages the agreed shell, services and finishes. The required design sets out how the new structure and existing house connect, with Lance remaining your main contact throughout the project.
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Add a larger living space below and bedrooms or a bathroom above, with both layouts planned as one extension.
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Plan access, routes and services together so the new rooms work with the existing house layout.
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Lance coordinates the shell, services and finishes, keeping you updated throughout the build.
Agreed Scope
Your quote sets out the agreed structure, roof, connections, services and finishes, based on the design for both storeys and the complete project requirements.
Plan a larger kitchen or living room below, with bedrooms or a bathroom above. The layout considers upstairs access, existing stairs, routes through the house and escape provisions, so both floors are designed together.
Foundations, walls and floors follow the structural design for the proposed loads. An engineer assesses any existing structure being relied on; further investigation may be needed. New openings and connections are included where agreed.
The new roofline and junctions need to work with the house. Roofing, insulation, glazing and weather protection are planned for the design, including protection during upper-floor work and making good at the connection.
Plan heating, electrics, plumbing and drainage across both floors before fitting. Bedroom and bathroom requirements are coordinated with the downstairs rooms, followed by agreed plastering, joinery, flooring and finishes.
At the visit, we discuss the rooms you need, plot and access. Required structural assessment, design and approvals inform the scope before a written quotation and build programme are agreed.
Before We Start
Double-storey extension cost and timing depend on the size, structural design, roof connections, site access and specification for both floors.
Size, foundations, floor structure, roof connections and access shape the price. The quote also covers the agreed service changes, room fitting and finishes.
The programme follows design and approvals, then the shell, services and fit-out. Access, weather protection and product lead times affect the order and timing of work.
Welsh planning checks include size, boundaries and upper-floor windows. Building regulations cover the structure, fire safety, insulation and drainage of the proposed extension.
Renovation Examples
The gallery shows examples of Cooksey’s renovation work, including kitchen fitting and bedroom finishes. Discuss these details when planning the inside of your extension.
Our Process
Lance starts with a site visit to discuss the rooms you need, the plot and access. Structural assessment and the required drawings establish how both storeys will be supported and joined to the house. Design and approvals inform the written quote and programme. The shell and weather protection come before services and interior fitting. We discuss disruption and access if you plan to stay, with Lance coordinating the agreed trades.
Helpful Answers
These answers cover upper-floor rooms, structural assessment and approval requirements when planning more space across two storeys for a practical, well-coordinated extension project.
A first-floor-only addition is a different project from building both storeys. Its feasibility depends on the existing structure and roof, assessed by an engineer before the scope is agreed.
Planning permission depends on the proposed extension and Welsh rules for the property. Building regulations are a separate approval, usually needed for an extension. Read how construction work on a home is managed before a start date is set.
They can be planned together within the new upper floor. Plumbing, drainage, ventilation and access are coordinated with the downstairs layout and required fire safety provisions.
They cannot be assumed suitable. If the design relies on existing foundations, their capacity must be assessed for the proposed loads. Investigation or strengthening may be needed before the design and scope are agreed.
From Google
Read homeowners’ experiences of working with Cooksey Renovation.
Our Coverage
We work across the towns below. Projects further afield are considered according to location and the proposed scope.
Discuss the rooms you need upstairs and downstairs at a visit. We review the house, plot and access, then identify required design information before agreeing the extension scope. See Areas We Serve.
Bring your ideas for upstairs and downstairs rooms to the site visit. The plot, access, structural design and connection to the house guide the agreed extension scope.
Plan bedrooms or a bathroom above a larger kitchen or living room. Access between floors, service routes and required structural assessment are considered with the layout.
Discuss how the new rooms should connect to both floors of your home. We review the plot and access, with Lance coordinating the agreed shell, services and finishes.
A site visit reviews the house, plot and rooms you want to add. Required drawings and assessment inform the quote for the agreed structure, roof and interior work.
Consider the upstairs and downstairs layout together, including access and bathroom drainage. The structural design and roof connection help shape the extension scope.
Bring your priorities for both floors to the site visit. We discuss the plot, access and connection to existing rooms, with the required design informing the quotation.
Plan both floors around daily use and routes through the home. The structure, roof and services are coordinated before the agreed fitting and finishes.
Discuss the rooms you need above and below at a site visit. The house, plot, access and required design information guide the agreed two-storey building scope.
We consider suitable double-storey extension projects depending on location and scope. Share your address and plans for both floors so we can confirm project coverage.
Two-storey extension projects are considered according to location and scope. Contact Lance with the property address and proposed rooms to discuss coverage and the next step.
Book a site visit to discuss both floors and your planned room layout. Your quote follows the required design and agreed building scope for the complete extension project.
Cooksey Renovation provides a full range of home improvement services across Barry, Cardiff and Bridgend.
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