Case Studies

What coordinated, design-led project management actually delivers — across listed heritage buildings, period homes, and contemporary London residences.

The Expertise Behind Alchemi Renovations

These three developments were delivered through Alchemi Group — our multi-award-winning development management company. The retrofit knowledge, heritage expertise, and design-first approach behind each one now sits inside Alchemi Renovations, applied directly to private homeowners.

CASE STUDY 1 — Westminster Fire Station

60% reduction in carbon emissions. Grade II Listed. BREEAM "Very Good” equivalent.

A landmark Edwardian fire station transformed into 17 residences, combining heritage conservation with a comprehensive sustainable upgrade programme.
How we achieved a 60% reduction in carbon emissions:
- 80% of waste heat recovered through advanced heat recovery units
- 2.9 tonnes of carbon saved annually from solar panel installation
- 10% reduction in unregulated emissions via smart appliances and thermostats

55 Victoria Street, SW1 from Alchemi Group, Stiff + Trevillion and Studio L, London

CASE STUDY 2 — 55 Victoria Street

BREEAM "Excellent." EPC B. RIBA London Award Winner.

Transformation of a 1980s commercial building into loft-style apartments, a residents' gym, and sky garden — achieving BREEAM Excellent and EPC B throughout.
How we achieved BREEAM Excellent:
- MVHR (Mechanical Ventilation with Heat Recovery) throughout
- FSC-certified wood flooring with PEFC chain of custody
- WRAS-approved water-saving taps and fixtures
- A-rated appliances specified across all apartments

Leinster Square, W2 by Alchemi Group, Studio L London and Tate Hindle architects

CASE STUDY 3 — Leinster Square

EPC B in a Grade II listed Victorian building. BREEAM "Very Good." Previously on Westminster's "endangered buildings" list.

A forensic restoration of a row of heritage homes into five townhouses and six apartments. Every heritage detail was restored or remade, while achieving modern energy performance standards.
How we achieved EPC B in a listed Victorian building:
- Solar panels, MVHR ventilation, and LED lighting throughout
- FSC-certified flooring and WRAS-approved fittings
- Low-VOC paint and bamboo carpeting specified
- Secondary glazing installed to preserve original listed sash windows

Explore the full Alchemi Group development portfolio →

Homeowner Case Studies

These projects were managed by Alchemi Renovations — the same expertise, applied directly to private homes across London.

Belgravia Court Exterior Alchemi Renovations Case Studies

Belgravia, SW1

EPC E → B. Platinum Tier future-proof renovation. First major upgrade in over 50 years.

Address: Pimlico, London Size: 1,372 sq ft EPC: Band D → upgraded to C
A mid-terrace freehold, upgraded through our Platinum Tier to improve EPC performance and maximise saleability after damage from long-term renting.
Works included loft and cavity-wall insulation, refurbishment of existing double-glazed windows, full redecoration, new carpets and a garden refresh, with staging and furnishing by Studio L London.
Eco Target:
- Loft and cavity wall insulation
- Refurbishment and replacement of existing double-glazed windows
- Increase the EPC from D to C
- Reuse by upcycling the client's existing furniture

Backyard patio with wooden table and chairs, a grill, stone gravel, trees, and wooden fencing under a partly cloudy sky.

Pimlico, SW1

Sold for £1.18 million — £180,000 above the closest comparable sale. Delivered in 10 weeks for under £100,000. EPC D → C.

Address: Belgravia, London Size: 650 sq ft EPC: Band E (53 points) → upgraded to B
A 1960s apartment featuring a comprehensive Platinum Tier renovation — modernising outdated windows, insulation, electrical systems, and plumbing, combined with a redesigned layout and upgraded specifications. Interior design and decor by Studio L London.
Eco Target:
- Window and door replacement for high-performance glazing
- Cavity wall insulation and loft insulation
- Air source heat pump integration
- Mould remediation and improved ventilation
- Long-term goal: EPC A rating

Leave with a clear pathway for your home and a timeline that works for you.

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Kenning Road retrofit casestudy of Outdoor balcony with a wooden table and six matching chairs, overlooking a cityscape with buildings, greenery, and a construction crane under a mostly clear sky.

Kennington, SE11

Deep retrofit. EPC D → C. Platinum Tier. Maximising ROI for long-term let.

Address: Kennington, SE11 London Size: 1,500 sq ft EPC: Band D → upgraded to C
A first- and second-floor flat above a commercial premises overlooking a major through road.
A deep retrofit under AR's Platinum Tier addressing energy inefficiencies, including layout limitations, sound insulation and environmental impact in order for the client to maximise their return on investment (ROI) after a long-term let.
Eco Target:
- Loft and cavity wall insulation
- Replacement of four single-glazed sash windows with custom double glazing
- Low-VOC paint, refurbished joinery and woodwork
- Biodegradable flooring upgrades

Sustainable interior by Studio L London in Westminster Fire Station

Interiors Case Studies

Through Studio L London, every Platinum Tier project includes award-winning sustainable interior design. These are real materials, real choices, real homes.

DINING & KITCHEN

Grade II listed apartment. FSC-certified herringbone oak. Salvaged vintage furniture. Repurposed kitchen island.

Address: 4 Greycoat Place, London, SW1 Size: 2 bed, 1,436 sq ft
A fully restored and modernised apartment within Westminster Fire Station, designed with an emphasis on sustainable materials and timeless interior detailing.
- FSC® and PEFC-certified herringbone oak flooring
- Low-VOC paints and natural microplastic-free wall finishes
- Salvaged vintage dining furniture and chandelier, repurposed for long-term use
- Repurposed buffet server adapted as a kitchen island
- Locally crafted tap in unlacquered brass, plus real quartzite worktops
- Locally purchased furniture, vintage accessories and art

BATHROOM

WRAS-approved fittings. Locally sourced English sanitaryware. Unlacquered brass designed to age naturally.

Address: 55 Victoria Street, London, SW1 Size: 3 bed, 1,800 sq ft
Part of the 55 Victoria Street development, this family bathroom design was replicated across multiple apartments to combine practicality with eco-conscious detailing.
- Locally sourced ceramic tiles and sanitaryware, made in England
- Unlacquered brass fixtures designed to age naturally
- Natural marble stone finishes
- WRAS-approved taps with flow restrictors
- LED downlighting and wall lights

BEDROOM

Grade II listed Victorian townhouse. Bamboo carpeting. Butterfly Mark-accredited bedding from recycled fibres. Plastic-free delivery.

Address: 7–12 Leinster Square, London, W2 Size: 3 bed, 2,400 sq ft
A guest bedroom within a Grade II listed Victorian townhouse at Leinster Square, designed around comfort, low-carbon choices, and elegant detailing.
- Deep pile bamboo carpeting
- Natural paper weave wallcoverings — one tree planted per roll purchased
- Bedding with Butterfly Mark accreditation, made from recycled fibres
- LED decorative lighting
- Custom upholstered bed in tencel velvet, transported plastic-free

See more award-winning interiors at Studio L London

Leinster Square, W2 —

A Sympathetic Grade II Retrofit

Before → After:

From derelict interiors to restored heritage detailing

The Leinster Square retrofit demonstrates how a forensic interior restoration guided a sympathetic renovation. We reinstated period elements — cast-iron stair spindles, plaster cornicing, limestone stairs — and introduced discreet upgrades including bespoke secondary glazing and LED lighting. The result: a home that retains its historic character while meeting today's comfort and energy standards.