Our Prices

Thoughtful, sustainable design tailored for your home.

Planning Stage Architectural Drawings

Small Extension (up to 20 m²) - £250 – £350
Includes full planning drawings and revisions.

Medium Extension (20–50 m²) - £400 – £600
Includes full planning pack and revisions.

Large / Two-Storey Extension - £650 – £800

Loft Conversion - £350 – £500

New-Build Single Home - £1,000 – £1,500

Basic LCA for Single House or Extension - £350 – £550
Full Embodied Carbon Report (A1–A5) - £550 – £750
Full Life Cycle Assessment (A–C) - £650 – £900

Life Cycle Assessment (LCA) calculations

Commercial Planning Pack + Early-Stage LCA - £2,500 – £4,000

Small Commercial Unit (Up to 250m²) - £1,200 – £1,800

Medium Commercial (250 to 500 m²) - £2,000 – £3,500

Larger or More Complex Projects (From 500 m²) - From £3,500

Small Commercial (Up to 250m²) - £700 – £1,000
Medium Commercial (250 to 500 m²) - £1,200 – £2,000
Large Commercial Projects (From 500m²) - From £2,000

Commercial LCA

Commercial Projects

Combined Planning + LCA Packages

Domestic LCA

Domestic Projects

Combined Planning + LCA Packages

Domestic Bundle (Extension) - £950 – £1,400
Single New-Build House + Full LCA - £2,200 – £3,000

Please note that VAT is not charged on our fees, as we operate below the VAT registration threshold. This means domestic clients can benefit from a saving compared with VAT-registered practices.

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Contact

Let's talk about your sustainable home project.

Contact

Email:

Phone:

Enquiries@stormarchdesign.co.uk

+44 07494025173