Expand your space.
Elevate your home.
Enhance your lifestyle.
Crafting exceptional living spaces with architectural precision, premium materials, and meticulous craftsmanship.
About Us
Why choose us?
Located in Surrey, and with over 20 years of experience, Thames Lofts & Extensions specialise in designing and building high-end loft conversions, bespoke home extensions and premium rennovations.
Our service ensures every project is delivered seamlessly, from initial concept through to completion, with uncompromising attention to detail.
Our service ensures every project is delivered seamlessly, from initial concept through to completion, with uncompromising attention to detail.
Bespoke Craftsmanship
Transform unused loft space into a sophisticated bedroom suite, home office, or luxury living area. Dormer, Mansard, Hip-to-Gable & Velux specialists.
Architect-Led Design Process
From elegant rear extensions to striking wrap-around designs, we expand your home with architectural integrity and premium finishes.
Planning & Permissions Handled
Comprehensive refurbishments tailored to your lifestyle, integrating structure, design, and luxury interior details.
Premium Materials & Finishes
A seamless, end-to-end process that covers architectural design, planning permission, structural engineering, and project management.
What we offer
Velux Conversion
Velux loft conversions, also known as roof-light conversions are a popular choice. The roof line remains unaltered because the windows are installed fitting flush to the original roof line.
Pitched Roof Dormer
A Pitched Roof Dormer makes for an attractive addition to your property. Rear facing dormers are usually covered under ‘permitted development’ but front facing dormers will require planning permisison.
Full Rear Dormer
A Full Rear Dormer extends the entire width of your roof at the back of the property, creating significant additional space with a flat roof and vertical walls.
Mansard
A Mansard conversion alters the structure of the roof itself, with a steep rear slope and a flat roof, maximizing internal loft space - ideal for a period property or urban home.
Rear Extension
Extend your home into your garden to create a bright, open-plan space. A rear extension is perfect for larger kitchens or living areas.
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Side Extension
Make the most of unused side space with a side extrension. It’s an easy way to widen your kitchen and add valuable extra room.
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Wrap Around Extension
Combine rear and side extensions for maximum impact. A wraparound extension transforms your space.
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Over Garage Extension
An over-garage extension is an ideal way to add room to a home without compromising on outdoor space.
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Our Process
Carefully planned. Expertly delivered.
From initial conversation to final handover, our process is deliberately structured and carefully managed. We plan thoroughly, communicate clearly, and execute with precision, ensuring your project is delivered on time, within budget, and to a very high standard.
01 - Consultation & Site Visit
01
Consultation & Site Visit
We start by discussing your ideas, needs, and budget. Then we visit your property to assess feasibility and offer tailored advice.
02 - Quotation & Proposal
02
Quotation & Proposal
You'll receive a detailed quote outlining the scope of work, estimated costs, and time-lines. We're happy to revise it based on your feedback.
03 - Design & Planning
03
Design & Planning
Our designers will create drawings based on your vision. These can include 3D visuals, layout plans, and structural considerations.
04 - PLanning Permission
04
Planning Permission (if required)
We'll handle all necessary planning applications and liaise with local authorities on your behalf.
05 - Building Regulations
05
Building Regulations
We ensure all plans comply with building regulations. Structural engineers are brought in for calculations where necessary.
06 - Contract Agreement
06
Contract Agreement
Once plans are approved and details finalised, we sign a contract outlining work schedules, payment stages, and warranty terms.
07 - Pre Start Preperation
07
Pre Start Preperation
We organise materials, arrange scaffolding, and set a start date. You'll receive a detailed time-line of the construction phase.
08 - Construction Begins
08
Construction Begins
Our team start with structural work, followed by roofing, insulation, plumbing, electrics, interior finishes - all with minimal disruption.
09 - Project Management
09
Project Management
A dedicated project manager oversees the job, keeping things running smoothly, and updating you regularly on progress.
10 - Final Inspection & Handover
10
Final Inspection & Handover
Once completed, we conduct a thorough check and address any snags. You'll receive all certificates and documentation.
11 - Aftercare & Guarantee
11
Aftercare & Guarantee
We offer ongoing support and a workmanship guarantee, giving you peace of mind long after the project is complete.
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Questions & Answers
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Frequently Asked Questions
Whether you're planning a loft conversion, home extension, or full renovation, we understand that you may have questions about the process.
Our FAQ section brings together the most common queries from homeowners we've helped, giving you an understanding of timelines, costs, planning requirements, and what to expect when working with us.
Our FAQ section brings together the most common queries from homeowners we've helped, giving you an understanding of timelines, costs, planning requirements, and what to expect when working with us.
01 - How long does a loft conversion or extension take?
01
How long does a loft conversion or extension take?
A typical loft conversion takes 6–10 weeks, depending on the type and structural complexity. A home extension usually takes 10–16 weeks, with larger or double-storey builds requiring more time. Before work begins, we provide a clear programme outlining each phase of the project.
02 - Do I need planning permission?
02
Do I need planning permission?
Not always. Many loft conversions and some extensions fall under Permitted Development. If your home requires planning approval, our team handles the entire process — architectural drawings, planning submissions, building control, and structural calculations.
03 - Will the work disrupt my home?
03
Will the work disrupt my home?
Some disruption is unavoidable, but we plan every project to minimise impact. For loft conversions, our team often works externally for several weeks, significantly reducing disruption inside the home.
04 - How much does a loft conversion or extension cost?
04
How much does a loft conversion or extension cost?
Costs vary based on size, structural requirements, materials, and level of finish. Get in touch to arrange a personalised quote.
05 - Do you manage the design and architectural work?
05
Do you manage the design and architectural work?
Yes. We offer a comprehensive design and building package and see the project through from idea to handover.
06 - Do you work with listed buildings or conservation areas?
06
Do you work with listed buildings or conservation areas?
Yes. We have experience designing and building projects for listed properties and homes in conservation areas, we can guide you through the regulations to ensure compliance.
07 - What materials and finishes do you use?
07
What materials and finishes do you use?
We work with trusted suppliers and use high-quality materials suited for long-lasting, luxury finishes.
This includes premium glazing systems, insulation, roofing materials, timber, and bespoke joinery options.
This includes premium glazing systems, insulation, roofing materials, timber, and bespoke joinery options.
08 - Can you create custom interiors?
08
Can you create custom interiors?
Absolutely. Our team can deliver bespoke interior solutions, if you can imagine it, we can build it.
09 - Will I need a party wall agreement?
09
Will I need a party wall agreement?
f the work affects a shared or boundary wall, a party wall agreement may be required.We help you determine if one is needed and guide you through the process with qualified surveyors.
10 - Can I stay in my home during the build?
10
Can I stay in my home during the build?
In most cases, yes - especially with loft conversions where early work is external.
For larger extensions or full renovations, temporary relocation may be more comfortable, but we will advise based on your specific project.
For larger extensions or full renovations, temporary relocation may be more comfortable, but we will advise based on your specific project.
