Client: Confidential
Location: London
Sector: Residential Investment / HMO
Service Type: Design & Build | Property Refurbishment | HMO Conversion
Duration: 12 Weeks
Completion Date: September 2025
Project Overview
Bigness Group was appointed to deliver a full HMO Conversion and Refurbishment for a London-based property investor.
The project transformed a standard residential house into a fully licensed House in Multiple Occupation (HMO), designed for modern tenants and compliant with all London HMO regulations.
Our Design & Build team managed every phase — from architectural design and planning submissions to complete interior fit-out, fire safety upgrades, and certification.
The result: a safe, stylish, and high-yield property tailored for professional tenants.
Project Objectives
- Convert a single dwelling into a fully compliant HMO with six self-contained bedrooms.
- Improve energy efficiency, soundproofing, and overall living comfort.
- Deliver a high-quality finish suitable for professional tenants and long-term occupancy.
- Complete within a 12-week construction programme, ready for market launch.
Scope of Works
-
Architectural Design & Planning:
Layout redesign for optimal space use, ensuite integration, and communal flow. -
Construction & Conversion:
Partition walls, insulation, and new fire-rated doors throughout. -
Electrical & Mechanical Upgrades:
Full rewire, LED lighting, emergency lighting, interlinked smoke alarms, and extractor systems. -
Bathrooms & Kitchens:
New modern kitchens with integrated appliances and tiled splashbacks.
Refurbished bathrooms featuring walk-in showers and contemporary finishes. -
Bedrooms:
Fully redecorated, furnished rooms with bespoke joinery and modern lighting. -
Compliance:
Fire safety, building control sign-off, and full HMO certification. -
Exterior & Landscaping:
Front and rear façade cleaning, fencing, and garden redesign to enhance curb appeal.
Challenges & Solutions
Challenge 1 – Maximising Occupancy Without Overcrowding:
The property footprint was limited, requiring smart design to meet all HMO spacing standards.
Solution: Our design team reconfigured circulation routes, allowing six fully functional ensuite bedrooms while maintaining communal comfort.
Challenge 2 – Compliance & Inspections:
Navigating local authority inspections within tight deadlines.
Solution: Bigness maintained early engagement with building control officers and HMO inspectors to ensure full compliance before completion.
Challenge 3 – Noise & Fire Safety Standards:
Upgrading acoustic performance and fire protection in a multi-level structure.
Solution: Installed high-density acoustic plasterboard, soundproof flooring systems, and FD30-rated fire doors with automatic closers.
Results
- Completed on time and within budget despite regulatory complexity.
- Achieved full HMO licence approval on first inspection.
- Delivered a stylish, energy-efficient, and profitable property for the investor.
- Increased rental yield potential by over 45% compared to the original layout.
Key Outcomes
- Demonstrated Bigness Group’s full Design & Build capability from concept to completion.
- Established Bigness as a reliable partner for landlords, developers, and property investors.
- Reinforced the company’s reputation for quality, compliance, and attention to detail in London’s competitive housing market.
Project Highlights:
- Full exterior refurbishment and landscaping
- Contemporary kitchen and dining area
- Ensuite bathrooms with designer tiles
- Modern bedrooms with integrated lighting and furnishings
- Fire safety installations and acoustic upgrades
💬 Client Testimonial
“Bigness Group managed every aspect of the conversion with precision. From planning to completion, their team handled compliance, design, and delivery flawlessly. The finish is exceptional — and the property achieved full HMO licence without delays.”
Sustainability & Safety
- High-efficiency boilers and LED lighting
- Waste reduction through recycling partnerships
- Eco-friendly materials for flooring and paint
- Fully compliant with Bigness Group’s Governance Framework and Health & Safety Standards
Why Choose Bigness Group for HMO Conversions
- Turnkey Design & Build delivery
- In-house planning and architectural support
- Fire safety, electrical, and compliance expertise
- Proven success with HMO investors across London
Project Gallery
