Loft Conversion Companies in Sidcup

Name: Loft Conversion Company
Brand: MyBuilder
SKU: loft-conversion-company
Rating: 5 (7 reviews)

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Some of our top rated loft conversion companies in Sidcup

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Shaped Builders LLP
Rating: 4.6 out of 5
Loft Conversion Company in Sidcup
Shapedbuilder is a locally based London custom residential building company with over 14 years of experience which offers a wide array of building and renovation services, for any job, big or small.
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Latest review:
Bathroom Fitting- 17 Nov 2019
Diagnosed the problem and completed the job. Efficient, clean and professional
R&T Carpentry & Construction
Rating: 5 out of 5
Loft Conversion Company in Sidcup
Ryan - I am a very hard working individual and always provide a pleasant service. I have over 13 years experience in the fields i cover. I am fully insured. We cover a very wide range of works including, loft conversions, extensions, garage conversions, Media walls, custom garden studios, Roofing, porches, carpentry, painting and decorating and some plumbing and electrical works. We always welcome new customers and will be happy to quote any work you require, however big or small. Thank you.
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Latest review:
Conversions - General- 11 Feb 2022
Basic one day job but Ryan was reliable. Quoted within a few days and Job completed within a couple of weeks No problems at all.
shalom property development ltd
Rating: 5 out of 5
Loft Conversion Company in Sidcup
Shalom Property Development ltd is a small construction company based in the Croydon area. We specialize in property refurbishment, house extensions, loft conversions, garage conversions, etc. We also undertake projects like plastering, painting/decorating, electricity, plumbing, tiling, flooring(laminate, wood, bamboo), bricklaying.
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Latest review:
Plastering- 6 May 2025
Amazing guys. Hardworking, tidy, professional. They worked in our house for 3 months and we were super happy with the work and everything. We invited them to do more work later on. 100% probably the most sincere and trustworthy builders we met. Only them. No one else from now on.
DLL CONSTRUCTION LTD
No reviews yet
Loft Conversion Company in Sidcup
I am an experienced builder with over 20 years experience and knowledge in the industry. I operate my company with a true passion for the construction industry, and like to be involved directly with the client/architects in order to satisfy their bespoke requirements no matter how big or small they might be, ranging from general builders works and loft conversions, to full 3 storey + extensions.
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Worsfold construction
No reviews yet
Loft Conversion Company in Sidcup
With 25 years in the building game, specifying in carpentry and carrying out general building works I.e carpentry, landscaping, electrical, plumbing, plastering, decorating and so on - there is much experience behind us. Always professional, on time, competent and honest. We provide Free quotes with a breakdown. Taking this career into not only our jobs but our pride, we expect to meet all our targets while satisfying your needs.
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Arwen building contractor ltd
No reviews yet
Loft Conversion Company in Sidcup
House renovation/ extension We are engaged built of residential, public and commercial buildings. characterized by honesty, and does its best to gain clients’ trust. Returning satisfied clients and new ones gained by recommendation confirm high quality of our services. Each work that is carried out at home can be difficult for clients. For that reason we attempt to minimalize an inconvenience related to building works. We also do our best to maintain the work place as tidy as it is possible while work is being done.
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Leegal Construction and Carpentry Services Limited
Rating: 5 out of 5
Loft Conversion Company in Sidcup
With over 20 years experience in the construction industry, Leegal Construction can complete any type of building work you require, from a small revamp of an existing room to building your brand new dream home! We also offer design ideas to ensure you get exactly what you wish for
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Latest review:
I had asked Lee to build me a media wall with a shelf behind the TV so the Sky Box could sit behind it, I also had asked for an electric fireplace to be fitted underneath the TV. Lee was so helpful leading up to the work being done and was always very quick to respond to any question I had. The wall looks incredible it’s everything I asked for and more. It’s so neatly done and I’ve had so many compliments on it already. Lee was so professional and everything was completed very efficiently. I am in love with it and would definitely recommend Lee and his team to everyone.
G lofts (gra)
Rating: 5 out of 5
Loft Conversion Company in Sidcup
G LOFTS is part of G R Associates building contractors and as been trading for approx- 36 years + within the construction trade Most types of works is under taken from kitchen fitting bathroom fit outs and loft and flat conversion.
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Latest review:
Loft Conversion- 22 May 2015
Hiring a good builder with all your expectation can be a very difficult experience. Especially to those who never done large scale building work. Having herd of people nightmare is one that you always dread that you may be the next victim. With George and Stephen there is probably few of a kind out there. I did three major work with George and I cannot highly thank enough of the quality of their work. George is very knowledgeable in the trade and has huge experience in getting the perfect loft. The added extra quality he has done on the gable end is something special. He is a multi-skilled tradesman and did all the work on his own with electric, plumbing, tiling, rendering etc. He also did good job in my bathroom too but that wasn’t an easy job having a bay window. The other work he did was the rendering whole of my external building. Again I did not expect this sort of rendering but the end results was exceptional. George kept his schedule and timing and finished within the predicted timescale. He was always on time and finished the daily with good clean and tidy of the whole area of his work. There was minimum disturbance throughout the house in the entire 8 week of his work. Lastly the professionalism within his work was always kept to the agreed standard, he always updated me with written work every week which I founded very helpful. I can recommend George to anyone and definitely too friends and family. Thanks again to G Lofts for everything.
Founder Property Limited
Rating: 5 out of 5
Loft Conversion Company in Sidcup
Team of dedicated experienced builders working within your budget. Specialising in : Chimney removal/support RSJ installation. Extensions. Loft conversions. Full renovations. Groundwork. Garden Rooms. Waste removal. Kitchen supply and fit.
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Latest review:
Restoration & Refurbishment- 9 Jan 2023
I was very happy with the work completed.
Bohemian Builders
No reviews yet
Loft Conversion Company in Sidcup
My name is Pavel, I have over 20 years of experiences in building trade. I can provide any type of work (carpentry, tiling, plumbing etc.) My focus is provide best possible job with hight level of standard and great attention to details. All this aspects leads to have happy customers and not needing to coming back to the job for repairs.
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Limelight Building Co Ltd
Rating: 5 out of 5
Loft Conversion Company in Sidcup
Limelight Ltd specialise in roofing and refurbishment of residential and commercial property throughout London, Kent, Surrey and Sussex. Our strong traditional values are based upon trust, integrity and commitment to our clients. The foundation of our success has always been the development and care of long term relationships, not only with clients, but also with our employees and suppliers
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Latest review:
Groundwork & Foundations- 18 Apr 2020
Hired Jeff to remove old shed, and prepare a new 2.8m x 4.8 m base. Jeff was very easy to communicate with, answered all my questions, the team turned up as planned on time, worked hard, completed all works requested, and ensured that any mess they made was fully cleaned up. Left all the old shed broken up, as requested. Jeff and the team were great and very please with the result. Highly reccomended
Crimson Design & Build Ltd
Rating: 5 out of 5
Loft Conversion Company in Sidcup
As a contractor I've been in the building business for five years now and my reputation is growing from strength to strength. So far all my jobs have been referrals from previous customers. I've expanded my team and they all know meeting customers's expectations is number 1 priority.
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Latest review:
Firoj and his team renovated a bathroom for me in March 2015. He gave me a fixed cost for his labour and what turned out to be a very accurate estimated cost for all the parts/materials at the outset. He also gave me a completion time of 9 days with 1 extra day for 'spillovers' and 'unforseen delays'. He finished the job at exactly 9 days and still came around on the 10th day to see how everything was working. The quality of his work was excellent, to say the least. He attention to detail was admirable, as was his commitment to delivering a finished product that would last several years. This focus on detail and longevity is something that really sets Firoj apart from other builders, who often see such jobs as just another task to be completed before moving onto the next job. I have no hesitation in recommending him. Several months later my bathroom still looks great and everything works.
Arthur's Brickwork
No reviews yet
Loft Conversion Company in Sidcup
I am builder for 20 years. My career began in Russia ,where I built private houses and also was doing bricklayers restoring jobs(17 century buildings).I have taken the photos of my jobs and can send it on your e-mail.
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All Aspects Group Ltd
Rating: 5 out of 5
Loft Conversion Company in Sidcup
All Aspects Construction is a multi-disciplinary contractor who specialise in the construction, refurbishment and maintenance of commercial and domestic buildings. We focus on delivering the very best craftsmanship in all services delivered and a quality end product through sustainable construction all within an approachable and professional manner.
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Latest review:
Painting & Decorating- 30 Apr 2019
Thoroughly recommend this Company, very professional, industrious, thorough, and exceptionally helpful, left the working areas clean and tidy, definitely value for money, delighted with the job of work carried out.
Kingswood
No reviews yet
Loft Conversion Company in Sidcup
Hi, I’ve been a bricklayer for over 20 years working for a range of building companies. I currently work for a maintenance company working on properties in south east London I have experience of all aspects of building including walls and chimneys. loft conversations and extensions. Please get in touch for more information
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Regents Roofing Limited
Rating: 5 out of 5
Loft Conversion Company in Sidcup
four family generations of roofers servicing the roofs of this nation since 1955, assuring your roof is watertight through all conditions. No job is too big or small, and we will never leave you stressed or unsatisfied. Providing the Greater London/Essex and surrounding areas with services such as: roof repairs new roofs tiling flat roofing Guttering fascias & soffits chimney work skylights/velux all things roofing
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Latest review:
Fascias & Soffits- 29 Sep 2026
Connor was friendly, professional and provided a very reasonable quote. He fixed my leaking guttering quickly and even went the extra mile by adding a downpipe. Really pleased with the work and service. I’ll definitely be using Connor again in the future and would highly recommend him!

Top rated Loft Conversion Companies

Our Loft Conversion Companies in Sidcup, are rated 5 out of 5 based on 7 reviews from customers like you.

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What services are offered by loft conversion companies in Sidcup?

Converting a loft often entails many jobs - some of which you likely haven’t even considered! Fortunately, a professional loft conversion company in Sidcup 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 Sidcup 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 Sidcup

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 Sidcup loft conversion company.

Find a loft conversion company in Sidcup 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 Sidcup.

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 Sidcup can view your job and register their interest.

Step 2: Review and compare Sidcup 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 Sidcup 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 Sidcup 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 Sidcup

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 Sidcup?

A local loft conversion company in Sidcup 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 Sidcup 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 Sidcup 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 Sidcup

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 Sidcup before agreeing to start the work.

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

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 Sidcup 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 Sidcup loft conversion companies offer strategies to minimise disruption, but in complex projects, temporary relocation may be advisable.