Loft and Basement Conversion Design and Renovation Services

Renovation & Remodeling

Maximize your home’s potential with our expert loft and basement conversion solutions

Bedroom Transformations: Turn your loft into a cozy master suite or guest bedroom.
Home Offices: Create a quiet and productive workspace.
Entertainment Rooms: Design the perfect space for relaxation or hobbies.
Storage Solutions: Optimize your loft with smart storage designs.
Skylights and Windows: Add natural light to brighten and enhance the space.
Custom Staircases: Seamlessly connect your loft with elegant staircase designs.

Basement Conversion Services:

Family Rooms: Transform your basement into a functional and stylish living area.
Home Theaters: Build a dedicated entertainment space.
Gym or Fitness Area: Create a private workout space tailored to your needs.
Wine Cellars: Design a sophisticated space for your wine collection.
Rental Units: Convert your basement into an income-generating apartment.
Laundry or Utility Rooms: Upgrade your basement for practical uses.

Let us help you turn your loft or basement into a beautifully functional space that suits your needs!

Loft Conversion Price Index – London (2025)

Based on a typical 30 sqm (approx. 323 sq ft) loft conversion with dormer and en-suite

Cost Category	Low Spec	Mid Spec	High Spec
Design & Planning	£2,000–£3,500	£3,500–£5,000	£5,000–£8,000+
Build Cost (per sqm)	£1,500–£2,000	£2,001–£2,500	£2,501–£3,200+
Fixtures & Joinery	£3,000–£5,000	£5,001–£8,000	£8,000–£12,000+
Structural Engineering	£1,500–£2,500	£2,500–£4,000	£4,000–£6,000
Total Est. Cost (30 sqm)	£50,000–£65,000	£66,000–£80,000	£81,000–£100,000+

Basement Conversion Price Index – London (2025)

Cost Category	Low Spec	Mid Spec	High Spec
Design & Planning	£4,000–£6,000	£6,001–£8,000	£8,000–£12,000+
Excavation & Shell (per sqm)	£2,500–£3,500	£3,501–£4,500	£4,501–£6,000+
Fit-out (lighting, heating)	£5,000–£10,000	£10,000–£15,000	£15,000–£25,000+
Structural/Waterproofing	£5,000–£10,000	£10,000–£15,000	£15,000–£20,000+
Total Est. Cost (30 sqm)	£95,000–£115,000	£116,000–£140,000	£141,000–£180,000+

Optional Add-Ons & Factors Affecting Cost

Add-On / Factor	Typical Cost Range	Details
Rooflights / Dormers	£1,500–£5,000+ each	Varies by type and glazing
Underpinning (Basement)	£300–£500 per linear metre	Required for foundation stability
Staircase Installation	£2,000–£6,000+	Timber, glass, or steel
Party Wall Agreements	£1,000–£2,500	If applicable to terraced/semi-detached homes
Planning & Building Control	£500–£3,000	Applications and inspections

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