Loft Conversion Companies in Millwall

Name: Loft Conversion Company
Brand: MyBuilder
SKU: loft-conversion-company
Rating: 4.4 (12 reviews)

Easily find verified Millwall Loft Conversion Companies. Just post your job to get quotes from MyBuilder's Loft Conversion Companies in Millwall.

Select a service

How it works

Post your job for free

Tell us about your job, and we’ll alert suitable tradespeople in your area. It’s simple and free.

Tradespeople respond

Once your job is posted, you’ll get responses from interested tradespeople through the website.

Review profiles and choose

Browse profiles, work history, and feedback, then choose who you wish to share your details with.

Some of our top rated loft conversion companies in Millwall

1652 Results

Sort by:

Montbron Construction Limited
Rating: 5 out of 5
Loft Conversion Company in Millwall
We have over 15 years experience carrying out a range of projects including domestic extensions, refurbishments and loft conversations and many other aspects of general building. We pride ourselves on the quality of our work and completing projects within the agreed time frame and budget. We always really appreciate the opportunity to discuss your project with you and provide a quote.
Get in touch
Latest review:
Loft Conversion- 12 Nov 2020
I was very happy with the the work completed and with how Montbron tried to understand what it was I was after and fulfilling me needs. I have a beautiful attic space as a result. The work was carried out to a very high standard, they were a pleasure to deal with and I would happily use them again and recommend their services.
A.I.M Property Improvements Ltd
Rating: 4.9 out of 5
Loft Conversion Company in Millwall
We are a family ran building company with many years experience combined. Our team are professional and hard working, we aim to provide the best service at competitive rates to all our customers whether the job is big or small. FREE QUOTES with no obligation! What we do: • Kitchen fitting • Bathroom fitting • Refurbishments • Extensions • Loft conversions • Carpentry • Plumbing • Electrics • Painting & decorating • Plastering & rendering
Get in touch
Latest review:
Restoration & Refurbishment- 25 Sep 2025
We were over the moon with our kitchen once Zihni and his team had finished. We had never used this firm before but we will definitely be using them again for future projects. Zihni is calm, knowledgeable, and went over and beyond in helping us not just complete our kitchen project, but in helping us move into a new home smoothly. We are also really appreciative of the rest of his team, as they were all so serious, professional and perfectionists. Zihni's communication was probably the single reason why the completion of our kitchen was such a success.
CM Building LTD
Rating: 5 out of 5
Loft Conversion Company in Millwall
At CM Loft Conversions, we specialise in luxury loft conversions, home extensions, and full refurbishments for both residential and commercial properties across London. Our dedicated team is renowned for transforming spaces with unparalleled craftsmanship and meticulous attention to detail. Whether it’s a high-end home, a modern office, or a commercial property, we deliver projects that elevate both form and function. By seamlessly blending design innovation with practical solutions, we ensure every project not only enhances the aesthetic appeal of a space but also maximises its value and usability. At CM Loft Conversions, we are passionate about creating bespoke spaces that reflect the unique needs of our clients. From concept to completion, we focus on the fine details and provide a smooth, stress-free experience. Whether you’re looking to transform your home, expand your business premises, or refurbish a commercial unit, our team is committed to delivering results that exceed expectations.
Get in touch
Latest review:
I met Charlie and his team from CM Builders Ltd when they were completing a loft extension and ground floor extension for one of my neighbours. Quotation and budget I was given an estimate subject to drawings as I was on a strict budget that I had to keep to for the build. Charlie was able to help me keep to the budget, both at the final agreed plan and during the build. The project was complex in that whilst it was a loft extension, all of the house was rebuilt. The only thing kept was the external walls and first floor rafters. Whilst the footprint of the first floor was not being changed I wanted to bring it up to current building standards with extra insulation. All of the plumbing and electrics were also replaced including a new boiler. The overall build has come in on budget, save for agreed enhancements that I did not think of at the planning stage and or building regulations such as double ceiling fire plaster boards. There were also items such as the original stairs that I wanted to keep, but Charlie was able to increase the height space in the kitchen making the worktop much more usable for tall people for a larger part of the kitchen. These were suggested to me as potential options as part of the build. Stage payments The stage payments have all been sensible throughout the build and linked to the ongoing work schedule. I have not therefore had any concerns in this regard. Quality of work This was a very complicated build as unlike the ground floor the first and new second floor are “L” shaped. The new 2nd floor included an en-suite and 2 bedrooms. Overall the house has been increased from 2 bedrooms 1 bathroom, to four doubles and 2 bathrooms. The quality of work is excellent and Charlie project manages his team to ensure that they all deliver to a high standard- if it is not done correctlt they do it again, with Charlie spotting any issues. Timeline of build This has generally gone to plan very well. As with any build you have to be realistic as things will happen outside of anyone’s control. When issues have arisen Charlie manages them to a conclusion. Also be realistic if you are having to manage to a tight budget. I had to plan for various stage receipts of cash before I could order the kitchen and bathroom items - make sure you understand how this impacts the build and availability of the work force, recognising that CM Builders have to book kitchen fitters and plumbers. CM Builders are also very helpful in that they have sorted out issues with the brick work of my freestanding garage (nothing to do with the build) and also a neighbour’s wall that could have been dangerous to the public, should it have failed. Conclusion The whole family are very pleased with the outcome and we now have the equivalent of a brand new house that has been built to a very high standard. This has definitely been worth doing both from a valuation perspective and quality of life perspective. I would not hesitate to instruct Charlie and his team again.
VA BUILD LTD
Rating: 5 out of 5
Loft Conversion Company in Millwall
VABuild Limited has been providing building services to both private and commercial clients in London and surrounding areas since 2000. We have an unrivalled reputation for quality and reliability. We always focus to build strong relationships with our customers.
Get in touch
Latest review:
Restoration & Refurbishment- 3 Apr 2016
Vidas and his team did a fantastic job with our property refurb project and I can't recommend him highly enough. He completely stripped out property back to brick and rebuilt if from the ground up. We had some quite particular requirements requiring the removal and creation of new partition walls and Vidas was able to accommodate and direct us in how we could address each requirement. We are very happy with the finish and have had many compliments from other tradesmen on the quality of the work. We did have some minor snagging after the project was complete but Vidas was very accommodating in coming back to rectify these issues. I would highly recommend Vidas and look forward to using him again in any future projects.
Leo81
Rating: 5 out of 5
Loft Conversion Company in Millwall
I am good at what I do and I'll do my best to get your house to look the way you want it to!
Get in touch
Latest review:
Restoration & Refurbishment- 19 Apr 2025
Positively, certain aspects of the finishing, particularly tiling, were carried out to a good standard. However, the overall experience was mixed due to significant issues. There were notable challenges during the project involving basic logistics and site management, leading to considerable inconvenience that seemed avoidable. Furthermore, the quality of workmanship was inconsistent; while some parts were good, other areas involving fittings and fixtures showed a lack of attention to detail in the finish, requiring later adjustments. Communication during the process could also be difficult, particularly regarding problem-solving and planning for materials. While we appreciated the parts done well, the project was let down by these inconsistencies and process issues, leading to some ongoing snagging and disappointment.
i loft Conversions ltd
Rating: 5 out of 5
Loft Conversion Company in Millwall
We are lofts specialist covering East London for over 20 yrs. We pride ourselves on customer satisfaction, quality & speed at sensible pricing. Our team is highly qualified & all works come with trade certificates & a 10 yr guarantee on materials & workmanship. We can create as little as a loft shell, to a fully completed loft from start to finish including; drawings, project mgt, building control to decoration to allow you to sit back & enjoy the progress within as little as 5-6 wks.
Get in touch
Latest review:
Extremely professional. Workmanship is of high quality. Very reliable. He redesigned & rebuilt our kitchen with a utility room & walk in shower room. He rebuilt our shed & converted into a usable work area and redesigned our garden.
apex roofing solitions
Rating: 5 out of 5
Loft Conversion Company in Millwall
Dedicated roofer experince in installing , repairing and maintaing various types of roofing work including roof structures and wood work proven track record of completing projects on time within budget.
Get in touch
Latest review:
Roofing (Pitched)- 14 Apr 2026
Great communication, fast and efficient were done in a day.
Buildmatic Ltd
Rating: 5 out of 5
Loft Conversion Company in Millwall
We are a team of professional architects, interior designers, builders, and contractors with remarkable skills in the complete spectrum of home renovation and improvements. Whether it's a single improvement or a full reconstruction, trust that BuildmaticUK will deliver quality work going above and beyond expectations. HOME IMPROVEMENTS LOFT EXTENSIONS BATHROOMS REFURBISHMENT ROOFS EXTENSIONS BRICKWORK KITCHEN FITTINGS PAINTING AND DECORATING and much much more ..........
Get in touch
Latest review:
"I am delighted with all the work done at our property. Adam was very thorough with the quote, kept us informed of everything that was going on and guided us through the exact process and what to expect, we have had all interior and exterior painted and it looks amazing, they worked so hard while they were here, kept the property as tidy as hey could work was finished on time and kept to the price we agreed on."
PACHO CREATE LTD
Rating: 5 out of 5
Loft Conversion Company in Millwall
Pacho Create specializes in high-quality loft conversions, home extensions, and full refurbishments—transforming homes into beautiful, functional spaces. With a focus on craftsmanship, planning, and client satisfaction, we bring your vision to life on time and on budget. Let me know if you want a more premium, modern, or friendly tone.
Get in touch
Latest review:
Tiling- 24 May 2026
I cannot recommend John from Pacho Create Ltd highly enough. I'm a very particular client with high standards, I was impressed by his care, patience, and professionalism throughout. He clearly takes pride in delivering quality work and paid close attention to every detail. Living in a small flat, I was concerned about dust, but John proactively created a solution to minimise disruption, which I really appreciated. He also gave excellent advice on budget-friendly waterproofing products. We had a challenge with large-format tiles, but John worked closely with me to plan the layout, ensuring a natural, balanced finish. The workmanship is outstanding – minimal wastage, precise alignment, and superb attention to detail. I wouldn’t hesitate to use John again, in fact, I’m already planning to have him back to tile around my bath in the near future. I highly recommend him to anyone looking for a skilled, reliable professional.
Statecraft Building Ltd.
Rating: 5 out of 5
Loft Conversion Company in Millwall
We strive to provide the best building services posible within and outside London. Our company has been built on continuous recommendation, repeat custom and quality workmanship. We offer full building services and you can be sure we`ll take care of the job.
Get in touch
Latest review:
Milen, initially came as I had a leak in my ensuit where the tiles had lost their grout. He was very honest in giving me advice, and regrouted at a very reasonable price. He then came a month later to remove the tiles in the shower and replace the plaster protection board, then retiled. He purchased all the products and gave me advice on the most valuable sustainable tiles. The work was carried out a to very high level, I would most definitely hire Milen in the future, and highly recommend him.
BUILDING ANDREW & GREG LTD
Rating: 5 out of 5
Loft Conversion Company in Millwall
Welcome to our profile, we are a company specializing in all kinds of renovation and construction works, all the works shown in the photos are made by us, we are diligent and open to all kinds of innovative ideas of our clients, in our opinion there are no impossible things to do, you have to Just think and take action, all the best A&G
Get in touch
Latest review:
Bathroom Fitting- 2 Mar 2021
Greg and Andrew are nice guys and got the job completed to a good standard.
hawa construction
Rating: 4.8 out of 5
Loft Conversion Company in Millwall
At Hawa Construction. we bring over two decades of experience in construction and renovation, serving clients across Bangladesh, Dubai, Oman, Saudi Arabia, and now proudly operating in the UK since 2020. Our team is highly skilled and diverse, working nationwide to deliver exceptional results for both commercial and domestic projects. We specialize in a wide range of construction services, ensuring every project we undertake is completed to the highest standard. Our reputation is built on trust, reliability, and customer satisfaction, supported by years of positive reviews and successful projects. What We Offer: Painting & Decorating • Interior and exterior painting • Specialist finishes and custom designs • Wallpaper installation and removal Drylining & Partitioning • Partition wall installation • Ceiling fixing • Plasterboard wall creation and finishing Plumbing Services • Full plumbing installations and repairs • Bathroom and kitchen plumbing • Leak detection and fixing Electrical Services • Electrical installations and rewiring • Lighting design and installation • Fault-finding and repairs Flooring • Wooden flooring installation • Laminate, vinyl, and tiling services • Floor repairs and refinishing Kitchen Extensions & Renovations • Bespoke kitchen design and installation • Structural alterations for extensions • Cabinet fitting and appliance integration Loft Conversions • Dormer and mansard conversions • Velux window installations • Complete loft transformations General Construction • New builds and property extensions • Renovation and refurbishment • Structural repairs Other Services • Roofing and guttering • Landscaping and outdoor • Brickwork and masonry With over 20 years of hands-on experience across multiple countries, we’ve honed our craft to deliver superior workmanship tailored to your needs. Our team combines technical expertise with an unwavering commitment to quality, ensuring that every project exceeds expectations. We take pride in maintaining clear communication, working closely with our clients from start to finish. Whether it’s a small home improvement or a large-scale commercial project, Hawa Construction. is your trusted partner for exceptional results.
Get in touch
Latest review:
Handyman- 6 Jun 2026
The Handyman did an excellent job of cutting nicely 2 venerian blinds over the window and door in the utility room. Will definetely use for more jobs in the future and recommend him for his versatility.
JH CITY PROPERTY CONSTRUCTION
Rating: 5 out of 5
Loft Conversion Company in Millwall
JH City Property is a London-based renovation company delivering high-quality residential and commercial projects. With over 18 years of experience, we specialise in full property refurbishments, including painting and decoration, flooring, kitchens, bathrooms, roofing, and structural works. All projects are carried out by our in-house team, ensuring consistency, reliability, and attention to detail from start to finish. We focus on practical design, durable finishes, and delivering work to a high professional standard. We offer free site visits and quotations, and can also provide initial estimates from photos or floor plans.
Get in touch
Latest review:
We had the outside of our house painted by JH City Property Construction and honestly they done such a good job. The house looks completely fresh and clean now. The team were really friendly, turned up on time every day and kept everything tidy while working. They also took their time with all the preparation instead of rushing through it, which definitely shows in the final result. The paint finish came out really smooth and neat, especially around the windows and front of the house. We’re really happy with how everything turned out and would happily use them again in the future.
Buildstead Development Ltd
Rating: 5 out of 5
Loft Conversion Company in Millwall
Our team at Buildstead has over 25 years of experience in the construction industry covering a wide range of project types. We truly are your "one-stop shop" when it comes to your project. From design to build, we pride ourselves on our integrity, the quality of our work and the working relationship we enjoy with our clients. With full project management included, you will be kept up to date at each step along the way ensuring complete peace of mind.
Get in touch
Latest review:
Kitchen Fitting- 5 Nov 2020
An incredibly positive experience from start to finish. I found Robbie and team were hard workers, very likeable and provided brilliant results. Comms throughout were excellent. With Robbie happy to discuss the job over the phone beforehand and put our minds at ease. A big shout out to the team for undertaking this work during COVID. We understand the pressures this places on our tradespeople and we thank Robbie and his team for their diligence and commitment to wearing masks in our home and working safely. A brilliant experience.
SH Electricals & Maintenance LTD
Rating: 5 out of 5
Loft Conversion Company in Millwall
At SH Electricals, we take pride in providing outstanding electrical solutions to our customers. Each project, regardless of how big or small is given our utmost attention, from the Design stage up until Certification & Maintenance stages. Our specialties are, but not limited to - Consumer Unit Upgrades - Complete Property Rewiring - Electrical Compliance – Inspection & Testing - Fire Alarm & Emergency Lighting inc Testing / Maintenance - CCTV Systems
Get in touch
Latest review:
Electrical- 13 Apr 2018
Great guys, completed the job with great flexibility. Fantastic communication throughout the whole process with great advice. Thoroughly recommended. Thanks guys!
Sutlej construction
Rating: 5 out of 5
Loft Conversion Company in Millwall
I can do the all building work as a part time work if anybody want to do any building works let me know thanks
Get in touch
Latest review:
Handyman- 25 Mar 2026
Happy with the work completed.

4.4

Top rated Loft Conversion Companies

Our Loft Conversion Companies in Millwall, are rated 4.4 out of 5 based on 12 reviews from customers like you.

Quality screening

Easily find verified local tradespeople. Just post your job to get quotes from tradespeople near you across the UK.

What services are offered by loft conversion companies in Millwall?

Converting a loft often entails many jobs - some of which you likely haven’t even considered! Fortunately, a professional loft conversion company in Millwall will be able to handle multiple services, ensuring your transformed loft is fit for purpose.

Some of the services loft conversion companies can provide include:

Full loft conversions: Complete design and build projects when structural alterations are needed
Dormer loft conversions: Add extra headroom and floor space with a dormer extension
Velux or rooflight conversions: Ideal for lofts with good existing height; minimal structural change required
Hip-to-gable conversions: Extend the sloped roof to create more usable space
Mansard conversions: A major structural change offering maximum space.
Loft storage conversions: Add flooring, lighting, and insulation for clean, usable storage
Skylight or roof window fitting: Install natural light solutions like Velux windows
Staircase installation: Design and build bespoke stair access to your new loft
Insulation, heating, and ventilation upgrades: Ensure comfort and compliance with energy standards
Design and planning services: Architectural drawings, planning permission, and building regulation approval

Post your job to MyBuilder and you'll be matched with loft conversion companies in Millwall who are interested and available to help. And with the reviews of past customers and the freedom to compare the quotes of similar tradespeople, all in the same place, the ball’s in your court.

Average costs of loft conversion companies in Millwall

Loft conversions tend to be charged on a project basis, rather than by the hour, as they often involve weeks or even months of work.

The cost of your loft conversion depends on a few things, including the style of loft conversion and materials you choose and the size of your property.

That being said, here are average prices for common types of conversion work:

Full loft conversions: £45,000–£70,000+
Dormer loft conversions: £55,000–£85,000+
Velux or rooflight conversions: £25,000–£45,000
Hip-to-gable conversions: £50,000–£80,000+
Mansard conversions: £70,000–£100,000+
Loft storage conversions: £10,000–£20,000
Roof window fitting or skylight installation costs: £1,000–£2,500 per window
Staircase installation costs: £2,000–£5,000
Insulation, heating, and ventilation upgrades: £2,000–£6,000
Design and planning services: £1,500–£4,000

Take a look at our guide to loft conversion costs to get a more detailed breakdown of the different options available when using a Millwall loft conversion company.

Find a loft conversion company in Millwall with MyBuilder

When you’re planning major work like a loft conversion, you’ll want to find the right tradesperson for the job. The great news is, MyBuilder has already done all the time-consuming work for you.

All you need to do is post your job on MyBuilder, completely for free, and we’ll share it with loft conversion companies near you in and around Millwall.

Step 1: Post your job on MyBuilder

Provide a detailed description of your loft conversion project, including the type of conversion you want, any structural changes, preferred materials, and your ideal timeline. Once posted, local loft conversion companies in Millwall can view your job and register their interest.

Step 2: Review and compare Millwall loft conversion companies

Browse the profiles of interested loft conversion companies. On MyBuilder, you can view photos of previous projects alongside customer reviews, compare quotes, and see the types of conversions they specialise in.

Step 3: Contact and discuss your project

Once you’ve reviewed local Millwall loft conversion companies, you can reach out to those that interest you to ask questions, clarify details, and request more specific quotes. At this stage, be sure to discuss vital aspects like planning permission, design options, and estimated timelines to ensure the company meets your requirements.

Step 4: Hire the right Millwall loft conversion company

Once you’re satisfied with their experience, quotes, and approach, you can confirm your hire and start planning your loft conversion.

You can also take a look at our loft conversion specialist hiring guide to help inform your choice. All tradespeople undergo checks at registration - such as verifying ID documents, company details, and certifications for regulated jobs and doing skill assessments - allowing you to hire with confidence.

Questions to ask local loft conversion companies in Millwall

Choosing the right loft conversion company for your job requires finding someone who understands your home and your goals.

Find out which company can share your vision by asking the following questions:

What experience do you have with loft conversions in Millwall?

A local loft conversion company in Millwall will know the types of properties and building styles common in your area, as well as the planning and building regulations that apply. Ask about similar projects they’ve completed locally.

Are you insured, and do you offer a warranty for your work?

Insurance protects your home during the loft conversion process, while a warranty shows the company’s confidence in the quality and durability of their work.

How do you handle planning permission and building regulations?

Established loft conversion companies in Millwall should understand local planning rules and building regulations. Ask how they’ll manage permissions, inspections, and compliance to avoid delays or legal issues.

What is included in your quote?

Ensure the quote covers all essential aspects of the loft conversion: structural work, windows or skylights, staircases, insulation, labour, and any additional fees. Understanding this upfront prevents unexpected costs later.

Do you manage the project from start to finish?

Some Millwall loft conversion companies offer full project management, coordinating architects, builders, and tradespeople. Others may only handle part of the conversion. Clarifying this early on helps you understand what support to expect.

FAQ: Common questions about loft conversions in Millwall

How long does a loft conversion take?

Typically, a loft conversion can take between 6 and 12 weeks, depending on complexity, planning permissions, and any structural work required. Be sure to discuss the timeline with any potential loft conversion companies in Millwall before agreeing to start the work.

Do I need planning permission for a loft conversion in Millwall?

Many loft conversions fall under permitted development, but some require planning permission, especially if you’re adding a dormer, extending the roof, or living in a listed building. A professional Millwall loft conversion company can advise and handle permissions for you.

Will a loft conversion affect my home insurance?

Yes, you’ll need to update your home insurance to cover the conversion. Inform your provider about structural changes, additional rooms, and any changes to utilities or heating systems.

Can I stay in my home during the loft conversion?

Many loft conversions allow you to remain in your home, though noise and dust are inevitable. Some Millwall loft conversion companies offer strategies to minimise disruption, but in complex projects, temporary relocation may be advisable.