London's Leading Architectural Designers + Consultants for Adding Space + Value at Low Cost
LONDON + HOME COUNTIES
Design Packages & Prices
Transparent, fixed-fee architectural drawings with optional add‑ons
Typically delivered in 7–10 days.
Popular Add-ons
MEASURED SURVEY
£200 / £350 + VAT
Small houses/typical layouts. Larger/complex homes priced on request.
PRE PLANNING ASSESSMENTS
£495 / £995 +VAT
Find out if you are likely to get planning approval for any type of project
ADDITIONAL REVISIONS
£50 / £100 + VAT
Only if you need more than what’s included in your package.
FAST TRACK CONCEPTS
+£150–£250 + VAT
Priority service for early sketches + design plans within 48 / 72 hours
3D VISUALS
FROM £295 + VAT
Small houses/typical layouts. Larger/complex homes priced on request.
THAMES WATER APPLICATIONS
£295 / £595 + VAT
Building over shared drains or a manhole need approval from Thames Water
PARTY WALL PACKS
£995 / £1,495 + VAT
Notices, schedule of conditions and party wall awards
STRUCTURAL DESIGN & CALCS
£600 /£1,200 + VAT
Typical for one or two structural openings. Complex schemes priced separately
Prices shown are for single‑storey extensions and typical conditions in London & the Home Counties. Complex sites (e.g., conservation areas, listed buildings, basements) may require tailored scopes. All prices exclude VAT.
LOFT CONVERSION
BUILDING REGS
Velux / Rooflight: £795 + VAT
Rear / Side Dormer: £995 + VAT
Hip-to-Gable: £1,095 + VAT
L-shape Dormer: £1,295 + VAT
Mansard: £1,495 + VAT
Includes
Technicial drawings, sections and notes for Building Control + Builders
Key construction details & specifications
Pack suitable for tendering + builder pricing