Get a fixed quick quote for your single storey extension project from £120. If you are planning a single storey extension and need a more dependable figure than a rough online range, this quick quote is designed to give you a clearer route into a full BoQ cost breakdown.
It suits homeowners, builders and designers who want to test budget realism before design assumptions, client expectations or procurement decisions drift too far from the likely cost of the work.
Clear entry point for pricing this project scope.
Useful when you want stronger cost clarity before extension design assumptions and budget expectations drift.
If you proceed, the service is still a full estimate with complete BoQ cost breakdown.
Need a clearer extension price before you commit?
If you want a stronger pricing basis before the design, builder shortlist or client expectations drift in the wrong direction, this quick quote is a sensible next step.
Who this quick quote is for
This quick quote is for people pricing a side, rear or similar single storey extension where the project is real enough to need better numbers, but not yet at the stage of a full measured estimate.
What the quick quote covers
Clearer budget basis
A stronger pricing basis than broad square-metre assumptions for the extension scope you actually have in mind.
Scope review
Realistic allowance for key labour, materials, buildability and extension cost drivers.
Next-step estimate support
If you proceed, the next step is your full estimate with complete BoQ cost breakdown.
Allow for party wall professional fees and lead time
An extension may fall under the Party Wall etc. Act 1996 if it involves work to an existing party structure, building at or astride the boundary, or certain excavation near a neighbouring building. Whether the Act applies depends on the proposed work and the adjoining properties.
Consent may avoid the need for an award. If a dispute arises and surveyors are appointed, use these illustrative early allowances for one straightforward adjoining-owner matter in England or Wales:
- One agreed surveyor appointed for both owners: £1,200–£1,500 total
- Each owner appoints a separate surveyor: £2,400–£3,000 combined
These are working budget allowances, not quotations or a statutory fee scale. Check whether VAT, notice preparation, a schedule of condition and the award are included. Allow more for multiple adjoining owners or ownership interests, basement or deep-foundation work, design queries, access restrictions, monitoring, engineering input or third-surveyor involvement.
The Act generally provides for at least two months’ notice before notified party-structure work and at least one month before notified line-of-junction or excavation work. These are notice periods, not the full programme. For early planning, allow around three months before the relevant construction work and more where an award, several adjoining owners or complex ownership is likely. Confirm the project-specific timetable before fixing the start date.
Quick Quote is the fast order-and-pay route to book professional estimating work for a clearly defined extension. Upload Plans suits bespoke or less clearly defined projects.
What to provide
- drawings or sketch layout
- approximate floor area
- brief specification notes
- site constraints or access details
- whether structural steel, glazing or kitchen relocation is involved
How it works
Send your project details
Send over your drawings, sketch or basic scope details.
We review the scope
We review the extension and return a fixed quick quote basis.
Move into the full estimate
If the project is suitable, the next step is your full estimate with a complete BoQ cost breakdown.
Why people use this instead of guessing
Single storey extensions are often judged too heavily on square-metre folklore. In reality, structure, glazing, kitchen works, drainage, access and tying into the existing house can shift the number quickly. A quick quote helps you move forward with a stronger pricing basis before the wrong budget becomes the working assumption.
Frequently asked questions
Can you price rear and side extensions?
Yes. The quick quote is intended to suit common domestic single storey extension layouts.
What if the drawings are still evolving?
That is common. A quick quote is often most useful precisely when the scope is real but still being refined.
How is this different from a full estimate?
It is a fast route to engage the team for the same full BoQ cost breakdown service, not a reduced or rushed version.
What happens after the quick quote?
If the project looks viable, the next step is your full estimate with a complete BoQ cost breakdown rather than a rushed or stripped-back service.
For broader context, see our building cost calculator, our article on building regulations and extension costs, or go straight to the single storey extension quick quote route.
