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Business Details
24 Years
experience
Professional Loft Conversions & Home Extensions London
Established in 2002, Doran Bros Construction has built a reputation for excellence in loft conversions, residential extensions, and property refurbishment across the UK. With over 30 years of combined experience, our team delivers professional, client-focused solutions tailored to individual needs. We prioritise quality craftsmanship, using premium materials to ensure every project meets the highest standards. Our portfolio includes hundreds of completed attic conversions, rear extensions, and full property renovations, reflecting our commitment to transforming spaces efficiently. Customer testimonials highlight our competitive pricing, punctuality, and ability to deliver complex projects on time and budget.

We maintain transparent communication throughout the process, ensuring minimal disruption to homeowners. Our expertise extends to both traditional and modern construction methods, including rooflight and dormer conversions. Case studies demonstrate our capability to handle large-scale developments, such as complete rebuilds of dilapidated properties. Based in South London, we serve clients across the region with a dedicated, can-do approach. Our repeat business and referrals from satisfied customers underscore our reliability and integrity in the construction industry.
Services
Loft Conversions Residential Extensions Property Refurbishment Landscaping Rooflight Conversions
Details
  • Year established: 2002
Highlights and features
  • We have over 20 years of experience in residential construction and property refurbishment
  • Our team delivers projects on time and within budget with minimal disruption
  • We use premium quality materials for all construction and renovation work
  • Proven track record with hundreds of completed loft conversions and extensions
  • We maintain transparent communication and provide personal service throughout projects
What people say
Delighted with finished space Excellent job Minimum of fuss Professional and friendly Flawless house
Services
Loft Conversions
We specialise in converting unused attic spaces into functional rooms while maintaining structural integrity. Our process includes comprehensive planning, installation of rooflights or dormers, and integration of insulation and electrical systems. Clients benefit from increased property value and maximised living space through our precision-engineered solutions.
Residential Extensions
Our team creates seamless property extensions that enhance both aesthetics and functionality. We handle rear, side, and full property expansions using premium materials and modern construction techniques. Each project includes architectural coordination, foundation work, and interior finishing to create cohesive living spaces that meet planning regulations.
Property Refurbishment
We revitalise properties through comprehensive refurbishment programs covering structural repairs, interior redesign, and system upgrades. Our expertise includes restoring period features while modernising infrastructure, with a focus on energy efficiency and contemporary living requirements across both residential and commercial buildings.
Landscaping
Our landscaping services create functional outdoor spaces that complement property architecture. We implement garden design, patio installation, and boundary solutions using durable materials. Projects integrate drainage systems and sustainable planting schemes to enhance property aesthetics and usability throughout the year.
Rooflight Conversions
We install rooflight systems that maximise natural light in converted loft spaces. This includes Velux window integration, structural reinforcement, and thermal insulation upgrades. Our approach ensures compliance with building regulations while creating bright, airy living areas with minimal roof modification.
Questions
What types of loft conversions do you offer?
We specialise in rooflight conversions, dormer conversions, and full attic transformations using premium materials and modern construction techniques.
How long does a typical loft conversion take?
Most projects complete within 6-8 weeks, depending on complexity, with minimal disruption to homeowners during the process.
Do you handle planning permissions for extensions?
We provide guidance on planning requirements and work with approved contractors to ensure all projects meet local authority regulations.
What areas do you cover?
Based in South London, we serve clients across London and the surrounding regions for all construction projects.
Can you refurbish period properties?
Yes, we specialise in restoring original features while modernising infrastructure in Victorian and other period buildings.
What guarantees do you offer?
All work is carried out to the highest standards with warranties provided for materials and craftsmanship as specified in contracts.
Reviews (3)
Capt Ata
May 14, 2021 Report
Critical:Professionalism
I asked for internal and side extension quotation , and they refused seeing the property at agreed time and date due to parking restriction in front of property.
Robert Bibow
Jul 17, 2020 Report
We and many friends of ours have used Doran Brothers for the last 20 years, to do various construction projects, and they have always been on time and on budget. They are not the cheapest quote we got, but they came well-recommended and they did such a good job on our loft extension that we had them do our downstairs refurbishment (taking out the walls to make a bigger living room), our kitchen extension (side return) and our basement. In every case, they were on time and on budget. PLUS, and this is really important, they gave us great advice and went the extra mile to do a good job. Here is
Sarfaraz Khan
Oct 30, 2016 Report
The best loft conversions they have made for me. I will recommend to all try once doran bros constructions..i am very happy with the service they have provide though the charges was bit higher side but if you are getting good service then its ok for highest cost