Smart Flat Conversion Solutions for Modern Living
Turn one home into multiple income generating units, flat conversion is your smartest property move yet. Ideal choice for landlords, developers and growing families. Our flat conversion London maximises every square foot with bespoke layout planning.
What Is Flat Conversion?
A flat conversion involves transforming a single property into multiple self-contained living units. This process maximises the use of space, often in older buildings or larger homes. Through it, you can create separate flats that can be rented out or sold individually. The conversion usually includes structural modifications, new plumbing, and electrical installation to ensure each flat is fully functional and meets legal requirements.
It is a popular choice for the property investors looking to boost rental income or homeowners seeking to make the most of their property’s potential. With expert planning and design a flat conversion can significantly increase your property’s value.

Explore our full range of flat conversion options
Make the most of your unused attic space by converting your loft into a fully self-contained flat. Ideal for rental income or extended family living, loft to flat conversion adds functionality and value to your home without extending the footprint.


Turn your commercial properties into high-yield residential or mixed used flats. So, if it is an office, shopfront, or warehouse, we reconfigure the space to suit modern living standards. Our team ensures all structural, legal, and planning aspects are covered, making the conversion smooth and compliant with all building regulations.
House to flat
Our flat conversions company converts your single family home into multiple flats and unlock its income generating potential. This is an ideal solution for the landlords or property investors opting to maximise ROI. from planning permission to final finishes, we provide a full turnkey services designed to your property and local authority guideline.


Garage to Flat
Our flat conversion architects london are skilled enough to turn your unused garage into a stylish and compact flat perfect for renting out or independent living. Our team ensures insulation, drainage and layout all meet modern housing standards. A garage conversion is a cost-effective way to increase liveable space and add substantial value to your property.
Basement to Flat
Through our full flat conversion services, the team can modify your basement into a bright, modern flat with the innovative architectural design and structural engineering services. From waterproofing and ventilation to lighting and layout, we create high quality basement flats that will be fully compliant with the local regulations and ideal for letting or guest use.


House to HMO
Let Paramountbuilt turn your property into a fully licensed house in multiple occupation (HMO) to maximise your rental income. The expert team can handle the layout planning, fire safety compliance and local authority requirements to deliver high quality, regulation compliant shared living space specifically designed to the students or professional rental market.
Multi-Unit Conversions
Do you have a large building or property? Our company specialises in converting properties into multiple self-contained units for rental or resale. In case it is a residential, commercial or mixed use property, we plan and deliver efficient multi unit conversions that meet the local UK building codes, ensuring strong return and long term investment value.


Hostel Conversions
Paramountbuilt team can convert your once functional hostel into high demand residential flats or accommodation units. Our team has the expertise in transforming the outdated layouts into the modern and energy-efficient flats designed for the rental market. The team ensures your converted space meets the safety, accessibility, and legal standards for a smooth change of use.
Studio Apartment Conversions
We design and build stylish, space efficient studio apartments, within existing buildings. Ideal for urban locations or impact properties, our studio conversion focuses on innovative layouts, modern amenities, and smart designs. Whether it is for rental, resale, or short term letting, we help you optimise small spaces beautifully.


Student Accommodation Conversions
Let our professional architects convert your property into purpose-built student flats with shared or private facilities. Our team understands what students and universities require, from durable finishes to communal layouts and energy efficiency. We deliver high quality conversions that meet housing standards and appeal to the student rental market year after year.
Our seamless step by step process to plan and design your flat

1.
Site assessment
We begin by visiting your property to assess its condition, dimensions and feasibility for conversion. During this, we listen to your goal, discuss planning constraints and offer expert guidance on how to move forward.

2.
Design & planning
Once the brief is clear, our architects produce detailed drawings and layout options personalised to your space and purpose. We handle planning permission applications and liaise with local authorities, ensuring all designs comply with building regulations and your desired aesthetics.

3.
Structural calculations
Our structural engineers prepare precise calculations and technical reports required for building control approval and construction. From foundations to walls and beams, we ensure every structural element is secure, efficient and optimised to support your flat conversions.

4.
Construction support
Our team remains actively involved throughout the building process, working with your contractors or builders to ensure the project runs smoothly. We provide technical support, respond to queries, and carry out site inspection if needed.
Get a quote to unlock the full potential of your property.
Let’s turn your unused space into smart, stylish and profitable living units. No matter if it is a loft, basement, garage or the entire house, our expert team handles everything. With year of experience and track record of successful conversions, we are here to make the process smooth and stress-free.
Benefits of Flat Conversion to Maximising Income and Property Value
Flat conversions are a very smart way to enhance space usability, here is why:
- Generate multiple income streams from one property.
- Turn your unused areas into livable spaces.
- Design each unit to suit market demand or tenant needs.
- Many conversions qualify under permitted development rights.
- Accommodate extended families or build a profitable portfolio.

Flat conversion design ideas to inspire smart and functional living
Open plan living areas
Create a sense of space and flow by combining kitchen, dining and lounge areas into one seamless open-plan layout.
Split level layouts
Use split level floors to define areas, add interest and make the most of vertical space in lofts or basements.
Compact ensuite bedrooms
Design small but functional bedrooms with private ensuite bathrooms to boost appeal for professionals, students or short-term rentals.
Smart built in storage
Maximise every inch by integrating underbed drawers, built-in wardrobes, or staircase storage to keep flats clutter free and functional.
Natural light maximisation
Use skylights, large windows, and glass partitions to flood the space with daylight and make compact flats feel brighter and bigger.
Dual-use furniture
Incorporate fold-away beds, extendable tables, and storage sofas to create flexible, multi-functional spaces without compromising on comfort or style.
Why homeowners and developers trust us for expert flat conversions?

Years Of Industry Experience

Complete Design To Build Support

Personalised Conversion Solutions

Planning And Regulation Experts

Fully Compliant Structural Drawings

Transparent Communications

High Return On Investment

Trusted By Landlords & Developers
Testimonials
GOOD Based on 27 reviews Asif Mahmood2025-03-23Trustindex verifies that the original source of the review is Google. Here are a few points that impressed me about this team: Same-day Zoom consultation, Transparent communication, Two-day work delivery timeline, Fast response to emails and calls. Highly recommended ⭐️ Moni Smith2025-03-22Trustindex verifies that the original source of the review is Google. Great Team, highly recommended for remodelling and renovation work Sally Kipping2025-03-20Trustindex verifies that the original source of the review is Google. Great team came to do our calculations quickly. Very helpful. Great value for money. Thank you! Paul Haslam2025-03-19Trustindex verifies that the original source of the review is Google. Extremely professional, polite and efficient. I will be using their services again, in fact they will be doing my Party Wall agreement. sam Ryan2025-03-19Trustindex verifies that the original source of the review is Google. I had an excellent experience working with Summit and Amber, their in-depth knowledge of structural drawings and their expertise to deal with building control makes them unique in market. Highly recommended for Renovation and Construction needs. Jenna Last2025-03-18Trustindex verifies that the original source of the review is Google. They are really good at their work, I am glad I hired this company for my dormer and extension work. Derek tompsett2025-02-27Trustindex verifies that the original source of the review is Google. Very happy with the service and Sophie put things in layman's terms so as to make a novice happy !! mark wiggins2025-02-26Trustindex verifies that the original source of the review is Google. very prompt and full report
FAQ’S
Permitting a flat conversion will generally require planning approval in most instances, particularly when the property’s use or layout is changed. Additional confirmation of the requirements can be obtained from the local authority.
The average duration of a flat conversion in London is approximately 3 to 6 months. This is, however, dependent on the size and complexity of the property, as well as the planning requirements. Additional factors such as waiting for contractor availability, permission sought, and structural changes required greatly affect the duration.
Yes, a flat conversion and house extension can be done in one project as long as there is adherence to the necessary planning permissions and building regulations. This method enhances the available space while also adding greater value to your property.
For most cases, hiring an architect when converting a flat is necessary as they are critical in completing the design in a functional and planning compliant manner. They are essential in meeting space required, building regulations, and making the approval process easier.
Changes in the use of buildings are likely to involve the grant of an advance planning permission which we commonly refer to as a planning permission. A change from a single unit indoor dwelling to flats will in most cases need planning permission. A Building Regulation approval will also be needed to address adequacy of structural integrity, fire safety, insulation, access, among other things.
Yes, all flat conversions must comply with UK Building Regulations regarding fire safety, interference, sound suppression, ventilation and structural integrity of the framework. For construction, one must obtain permission from building control and follow the legally established safety measures and operational standards throughout.
Yes, of course! Every flat conversion we deliver is designed around your vision, your space and your needs. You can choose how your space functions and looks. From the custom layouts and finishes to features, our architects will work with you to tailor areas that capture your lifestyle or even investment goals.