Double-storey extensions in Kingston upon Thames
A double-storey extension creates a proposal across two levels. The downstairs space, rooms above, circulation and connection to the roof all need to work together. Falcon can discuss the building scope alongside formal design arranged through the design partner. For your Kingston upon Thames enquiry, focus on your property, with New Malden examples correctly labelled.
Prepared by Falcon Design & Build · Updated 8 September 2026
New Malden · Kitchen island and fitted units viewed from the rear of the room.
Plan the upstairs and downstairs together
Double-storey and two-storey refer to the same topic here. This is a coordinated addition at ground and first-floor level. It is distinct from converting space already within the roof, or adding a single level behind the house.
Write a separate room brief for each floor and then put the plans side by side. Check how someone would enter each new room. Extra floor area is less useful if the connection removes a room or creates a long circulation route you do not want.
Discuss support, foundations and the relationship with the existing building before assuming an upper floor can sit on an earlier extension. Any previous drawings or structural records help identify what needs investigation; they do not replace a current assessment.
Include the roof connection, window positions and views from the neighbouring properties in the design brief. Explain the rooms you need to keep using during work on each level. Agree the sequence around the actual proposal rather than treating upstairs as a repeat of downstairs.
Prepare the Kingston property brief
Use Kingston’s heritage map to check the property’s boundary.
Bring a plan of each level and describe the new room connections. A Kingston upon Thames two-storey brief should not use single-storey gallery work as evidence of an identical completed proposal.
Use nearby examples to explain preferences while keeping the actual project address central. The New Malden galleries show specific Falcon extensions and fitted rooms; their labelled location and scope stay attached to each reference. For your Kingston upon Thames home, sketch the existing rear or side rooms, the additional space and the garden connection you want. Check the exact property on Kingston's heritage map rather than applying an Old Town label broadly. The designer can then assess your proposal independently of the gallery. This makes the quote conversation clearer because the desired finish, the new building work and the changes to existing rooms are identified separately, with no assumption that another project's unseen structure, price or programme transfers to yours.
Confirm the council using the property postcode and give the designer any relevant map or decision reference. A named area is a starting point for checking this address, not an assessment of the whole town. Treat sketches and examples as discussion material until the property-specific work has been reviewed.
Separate the design, building work and purchases
Our team offers practical guidance on layouts and finishes. Formal drawings and planning work are arranged and coordinated through the design partner. Practical guidance is not the production of architectural drawings; agree the professional scope and fees for your proposal.
Falcon supplies agreed first-fix materials and carries out the agreed building and fitting work. You buy agreed second-fix items, such as kitchen units, bathroom fittings and flooring, with guidance. The quote should say who supplies and fits each item, and how changes will be agreed.
Keep product choices and required delivery dates with the scope. Confirm dimensions and compatibility before buying items that affect preparation or services. If a choice changes, ask how that affects the agreed work before treating it as a like-for-like replacement.
How Falcon organises a projectDefine the budget and the programme together
The cost depends on the assessed scope, existing condition, design and chosen specification. Compare Falcon’s contract price with your total project spend: add homeowner purchases and any professional, application or other fees outside the building quote. Ask for the VAT treatment and exclusions to be explicit.
Time on site is only one part of the programme. Keep design work, property checks and approvals, lead time, procurement and construction separate when discussing dates. Explain any move, school or household commitments as requirements to discuss, not a start or completion date already agreed.
Related Falcon work and project references
Begin the project discussion with drawings and photographs of your own home. The existing Falcon galleries show specific extension and room work in New Malden and Camden. Those photographs are not presented as a completed double-storey extensions project.
Send existing drawings or safely taken property photographs to explain what you have. A finished picture can help describe a preference, but it cannot show the hidden construction or settle which alterations are suitable.
View the labelled Falcon project galleriesWhat to bring to the first conversation
Include your actual property postcode and describe the existing plans of both floors, roof views and records of any earlier addition. In the Kingston upon Thames brief, distinguish facts you know from ideas you want assessed. Keep your property, with New Malden examples correctly labelled with the drawings, and identify any decisions already made so their effect on the connected work can be discussed.
Say which drawings or decisions already exist and what still needs to be explored. Include the wider project if several services are involved. The enquiry form keeps the page you came from and lets you choose the project type that best describes your current plans.
Can a first floor be added above my existing extension?
It needs an assessment of the existing construction and the proposed loads, layout and approvals. Send any earlier drawings, but leave the support solution and feasibility to the professional review.
What should I make clear in my Kingston upon Thames property enquiry?
Bring a plan of each level and describe the new room connections. A Kingston upon Thames two-storey brief should not use single-storey gallery work as evidence of an identical completed proposal.
Does this town page establish permission for my project?
No. The property, proposed work and relevant current rules need their own review. Use the linked council resource as a starting point and arrange formal design and planning work through the partner as agreed.
Can I change the project type when I enquire?
Yes. Choose the work you actually have in mind, including Combination / not sure if needed, and enter the real property postcode. The page context helps explain what you were reading; it is not a substitute for your project details.
Falcon project · Fitted kitchen in New Malden
Discuss your Kingston project
Send the actual postcode, your priorities and any existing drawings. Include connected work so the scope can be discussed together.
Tell us about your project and our team will contact you to discuss the next step.
Prefer to talk it through?