Loft + extension, designed together, £3,150 fixed.
If you're doing the loft and the extension at the same time, designing them as one job is cheaper, faster and avoids the coordination headaches that come from running two parallel sets of drawings.
+ £199 admin fee. Larger or non-standard projects priced individually.
What's included.
Everything you need to submit to Building Control and hand to a builder. No part of the pack is "extra", the price you see is the whole pack.
- Everything in the Loft Conversion package
- Everything in the Home Extension package
- A single coordinated set of drawings, no inconsistencies between the two scopes
- One Building Control full-plans submission (instead of two)
- Structural calcs covering both scopes, checked against each other
- Two rounds of revisions across both scopes
- £150 saving vs. booking the two packages separately
What it doesn't cover.
The things below sit outside the package, either because they're a different profession (Party Wall surveyors, builders) or because not every project needs them. We'll flag what applies to you before you book.
- Planning permission applications, where required
- Party Wall award fees (paid to surveyors directly)
- Building Control submission fee (paid to the council)
- On-site construction or project management
- Listed building or conservation area consents (priced separately if needed)
Bolt these on if you want them.
Same fixed-price approach as the package itself. No hidden extras.
3D render£300
Expedited turnaround£250
What people usually ask before booking.
Do I have to do both projects at the same time to get the combo price?
Yes, the saving comes from doing one site visit, one coordinated design pass and one Building Control submission. If you're staging the work over a year or more, two separate packages usually fit better.
What if I drop one scope partway through?
We charge the appropriate single-package price for whatever's been completed, with a fair credit for the design work already done on the dropped scope. Nothing punitive.
Does this include a 3D render?
No, the render is an optional £300 add-on regardless of package. If you'd like one of the extension, the loft, or both, just let us know at booking.
How long does the combo pack take?
21 working days standard (or 10 working days with the expedited add-on). Longer than a single package because it covers more scope, but materially shorter than running two separate jobs in parallel.
Book the combo, fixed price, no quote-after-a-call.
Drop your postcode in. If we cover it, you get an instant yes and a booking link. If we don't, you get an honest no.