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Loft Conversion drawings London

The easiest way to add additional bedroom which can accommodate an ensuite or home office, these conversions can increase your property value by 15-25% according to Nationwide Building Society research. Often possible under Permitted Development, no planning permission is required in many cases, however a lawful development certificate is highly recommended for any type of loft conversion.

 

Dormer Loft Conversion with Black Slate Cladding – Loft Conversion Plans by AC Design Solution
loft conversion
loft conversion

Expert Loft Drawings

We have drawn loft conversion plans for almost all different types of properties, Edwardian, new build and conservation properties.

loft conversion

Details Matter

The details matters, we model your property to make sure staircase fit correctly, bathrooms are adequate sized for your loft conversion.

loft conversion

Building Regulation 

We meticulously detail every aspect from staircase placement to dormers, ensuring building regulation compliance and accurate builder quotes.
loft conversion
loft conversion

TRUSTED BY 1000’s OF HOMEOWNERS, CONTRACTORS & DEVELOPERS THROUGHOUT LONDON

Over 1,247 completed projects with a 4.9 out of 5 average client rating and 98% planning approval success rate demonstrate our expertise in delivering quality architectural drawings and building regulation drawings that get approved across Greater London.

Included as standard Traditional
Architects
AC Design
Solution
Fixed, transparent pricing
2 Free design changes
Immediate project start subject to T&C'S
3D property scanning within the price
Remote, hassle-free meetings on Teams or Zoom
Planning & building control guarantees
Transparent build cost analysis
Clear timeline & progress tracking

WHY LONDON HOME OWNERS CHOOSE US

Our loft conversion specialist team understands the unique challenges of London properties, from Victorian terraces to modern developments in London. We combine local planning knowledge with technical expertise to deliver your loft conversion plans that work for your specific situation and local council requirements.

WHY CHOOSE AC DESIGN SOLUTION

We provide survey within 7 days with quick response times and designs completed in 2 weeks for fast turnaround. Our CIAT-qualified technicians maintain professional standards while our extensive local planning experience means we know London and surrounding areas councils inside out. All services come with fixed-price loft packages and no hidden costs.

PROVEN RESULTS

Our design experience spans 15+ years creating successful loft conversions throughout London. We maintain a 98% approval rate on first submission and consistently achieve 4.9 out of 5 average rating from over 1,000 completed projects, helping clients convert your loft space efficiently. We also offer building regulation drawings

Rear view of a residential property featuring a newly built single-storey extension and multiple loft conversions with dormer windows. The extension includes a pitched roof and modern rendered finish, complementing the upper-floor alterations. The property is surrounded by wooden fencing, showcasing a completed refurbishment and expansion project.
loft conversion

OUR DRAWING SERVICES

Professional drawings for london homes

We provide comprehensive architectural drawings and technical drawing and planning services for all types of home improvements, specializing in loft conversion plans and house extension projects across London. Our London team delivers precise, regulation-compliant plans for your home that ensure your project runs smoothly from concept to completion.

Loft conversion plans

Our expert loft conversion drawings london service includes everything needed for a successful project. Complete architectural drawings cover every aspect of your conversion while structural calculations ensure safety and compliance. Building regulation drawings streamline the approval process, and planning drawings support guides you through any required permissions. Technical specifications provide builders with clear construction guidance for your proposed loft conversion.

Building Control drawings - Bishops avenue
loft conversion

CALL US TODAY ON 020 8152 4006

Need Planning Advice? Read Our Expert Insights

5 Things to Know Before Doing a Hip to Gable Loft Conversion

5 Things to Know Before Doing a Hip to Gable Loft Conversion

A hip-to-gable conversion removes the sloped hip end of your roof and replaces it with a vertical gable wall, creating significantly more usable loft space and headroom than other conversion types but usually requiring planning permission.
Do You Need Planning Permission for a Loft Conversion? Everything You Need to Know

Do You Need Planning Permission for a Loft Conversion? Everything You Need to Know

The article discusses whether planning permission is needed for a loft conversion. Many lofts fall under permitted development, but some require planning approval if they exceed size limits or are in conservation areas. Building regulations apply to all loft conversions.
Simply Loft Conversion: UK Homeowner’s Loft Guide

Simply Loft Conversion: UK Homeowner’s Loft Guide

Discover various types of loft conversions—from dormer and hip-to-gable to Mansard and Velux—and learn how your roof’s pitch affects each option. this article will show you how to budget for your loft conversion and how to reduce costs.
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Check some of our customers review

Super efficient, good communication, and very quick turn around of the structural report which Buildings Control approved. Really happy and would use again. Thanks Guys
loft conversionGodwin Temisa
09:41 17 Apr 25
With excellent communication and quick turnaround, they designed a floor plan that will allow more light to come to the bedrooms. I am impressed by how they sectioned the rooms and even managed to create a large study. Based on my experience, I would like to recommend their service.
loft conversionAlisha S
20:53 24 Mar 25
Had a great experience with AC Design, the customer service was great and they responded to our questions promptly. Turnaround for designs were quick too. I especially appreciated having a call with the engineer as it helped us understand why the designs were constructed in a certain way. Highly recommend this company if you require structural drawings done
loft conversionGang Hu
22:55 03 Feb 25
We had a great experience with AC Design Solutions. They responded to our request for structural drawings and calculations swiftly and the whole work was delivered very quickly with excellent quality. Highly recommended.
loft conversionAaron Stone ltd
15:36 21 Nov 24
AC design solution have done an amazing job with helping me on a party wall issue. Zaeem has designed exactly what we require and I would recommend them to others.

Zubear was very friendly and approachable and understood what was required. Thank you to the AC Design Team.
loft conversionZayn Ahmed
21:22 25 Jul 23
I received a fantastic and outstanding service from AC Design Solutions. They are very professional and skilled in their trade. I will definitely recommend AC Design Solutions to all my family and friends and anyone looking for a professional, skilled, and reliable company to work with.
loft conversionMarcin Kozub
10:24 23 Nov 22
Professional help. And cost effective approach.
loft conversionEleftheria Vagi
12:26 26 May 22
Fantastic experience working with the team at AC Design Solutions. Very caring and considerate to my plans and what I wanted to achieve with my rear extension. I would highly recommend to anyone looking for a reliable, well priced and creative team with sound technical knowledge as well.
loft conversionmidsummergirl
13:24 04 Apr 22
A good company to deal with. They responded swiftly from the start until the end and talked me through what I needed to do in regards to a through lounge at my property.
AC Design did the structural calculations for our single storey extension and also drawing for build over agreement. I can say the communication with Zubear was very smooth and professional. Everything was done on time and very professional. I would use them in future for sure.
loft conversionAndrew meatyard
08:11 23 Sep 21
I was looking for a cost competitive service for floor plans and structural calculations. AC Design Solutions provided a good quotation but I had never dealt with them before so was obviously cautious about conducting business totally online. I conducted some research and then instructed AC and have been impressed with the professionalism and attention to detail. I would recommend them and shall be using them for the next stage of my project.
loft conversionMICHAEL ROSEN
19:23 18 Mar 21
We were recommended to use AC Design Solutions at short notice and are delighted we chose them. Our assignment became time critical and they pulled out all the stops to get the work done on time.
We would be delighted to appoint them again for future work if the need arose. Good value for money too.
MR
loft conversionWaqar Asghar
22:42 27 Jul 20
We highly recommend AC Design Solutions who we used to design our 2 storey extension in a conservation area. We had looked at their previous work and spoken to neighbours who had previously used their services. As we live in a conservation area we wanted to hire someone who would not only understand the local requirements and regulations but also someone that had the experience and off course was reasonably priced.

From first contact to final approval stage, Zaeem was extremely helpful and always made himself available to us.

We highly recommend AC Design Solutions for any off your architectural planning and design requirements.
loft conversion

CLEAR, FIXED-PRICE PACKAGES

Fixed-price loft conversion plans

Our complete loft conversion plans package can range from as little as £900 which can include all technical documentation and professional support from initial survey through to final approval. This fixed-price loft package ensures no surprise costs during your extension or loft conversion project.

 

 

Complete drawing & planning

Your comprehensive drawing and planning package includes existing and proposed floor plans that clearly show the transformation. Section drawings and elevations provide detailed views of the conversion while structural calculations ensure structural integrity. Building regulation drawings meet all current standards, and planning drawings are included if required. Construction details and specifications give builders everything they need for accurate implementation of your plans for your project.

Architectural drawings package

Our professional architectural drawings cover every aspect of your loft conversion. Architect plans provide detailed layout and design specifications while structural drawings include load calculations and support details. Building regulation drawings ensure compliance with all current standards, and construction details provide clear specifications for builders to follow when planning a loft conversion.

DETAILED DRAWINGS PACKAGE

A single storey extension is one of the most popular home improvement projects. Our single storey extension drawings include all necessary details for building control approval. Whether it’s a kitchen extension, rear extension, or garage conversion, we provide complete building regs drawings that satisfy all regulatory requirements while being cost effective.

loft conversion

Dormer loft conversion

Our dormer loft conversion service creates additional headroom and floor space by extending your roof outward. Dormer loft designs maximise your usable space while maintaining your property’s character.
loft conversion

Hip to gable loft conversion

Hip to gable conversions transform sloping roof sections into vertical walls, significantly increasing floor area.

loft conversion

Mansard loft conversion

Mansard loft conversion projects involve altering your roof slope to create maximum space. Mansard loft designs typically require planning permission but offer the greatest space increase.
loft conversion

L-shaped loft conversions

L-shaped loft conversions work perfectly for properties with complex roof layouts. Our MCIAT in London specialize in creating innovative architectural designs

MCAIT QUALFIED 

TYPE OF LOFT CONVERSION SERVICES

What’s Included in Every Project

Complete Design Package:

  • Architectural floor plans and elevations
  • Structural calculations and engineering
  • Building regulation compliance drawings
  • Planning application support (if required)

OUR DESIGN AND PLANNING PROCESS

PROPERTY SURVEY

Comprehensive assessment of your loft space, structural requirements, and planning constraints completed within 10 working days of booking. Our detailed survey identifies opportunities and challenges to inform the loft conversion design process.

INTIAL DESIGN

Concept development that maximise space while ensuring compliance with building regulations. Loft plans are completed within 2 weeks and focus on optimizing your loft’s potential while meeting all technical requirements for your new loft space.

PLANNIG APPLICATION MANAGEMENT

Expert handling of planning permission applications and building regulation drawings submissions. Our team manages all communication with local council authorities and ensures applications are complete and accurate for fast planning approval.

TECHNICAL DRAWING PACKAGE

Final professional architectural drawings that provide complete documentation for your loft conversion. These detailed plans for home improvement ensure builders have everything needed for accurate construction while meeting all regulatory requirements.

Rear view of a residential property featuring a newly built single-storey extension and multiple loft conversions with dormer windows. The extension includes a pitched roof and modern rendered finish, complementing the upper-floor alterations. The property is surrounded by wooden fencing, showcasing a completed refurbishment and expansion project.
loft conversion

ABOUT AC DESIGN SOLUTION

From builders to designers

We started as builders who understood the frustration of poorly designed plans. This hands-on experience taught us what works in practice, not just on paper. Today, we’re London’s trusted specialists for loft conversion plans that builders can actually work with, helping create your beautiful loft space.

Planning Success

With a 98% approval rate on first submission, our understanding of local planning requirements ensures your application has the best chance of success. We know what planning officers look for and design accordingly, whether you’re planning an extension or adding a loft conversion.

Results we acheived

From single-bedroom additions to complex multi-room conversions, every project receives the same attention to detail and exceptional professional standards. Our proven track record speaks for itself with over 1,000 successful projects completed across London , consistently delivering outstanding results.

Completed Projects

Over 1,247 completed projects clearly demonstrate our proven expertise and unwavering reliability. Each individual project adds to our comprehensive understanding of what works in London’s diverse housing stock, benefiting every future client seeking expert architectural drawings

Design Experience

Our 12 years of experience creating london loft conversion projects across the capital means we understand the unique challenges of different property types. From Victorian terraces to modern apartments, we’ve successfully designed conversions that maximise space while meeting planning permission

Avg. Client Rating

Our 4.9 out of 5 average client rating reflects our commitment to quality service and customer satisfaction. We maintain this high standard through professional communication, accurate drawings and calculations, and reliable project management.

Most frequently asked questions

Q. Do I need an architect for my project?

Not necessarily. Our qualified architect technicians can handle All loft conversion projects at a fraction of traditional architect costs while maintaining professional standards and regulatory compliance for any type of conversion.

Q. Do I need planning permission for a loft conversion?

Many planning applications aren’t needed as most loft conversion projects fall under Permitted Development rights. We assess your specific situation and advise on requirements during our initial survey, whether you’re planning a loft conversion or considering extension or conversion options.

Q. What's included in your fixed price?

Everything needed for approval including survey, drawings and planning services, calculations, applications, and revisions. Our fixed-price loft package ensures no hidden costs or surprise fees during your project.

Q. Do you handle the entire planning process?

Yes, we manage everything from initial assessment through to final planning approval. We keep you informed at every stage while handling all communication with local council authorities through our comprehensive planning services.

Q. What areas do you cover?

All London boroughs and surrounding areas within the M25. We have extensive experience with local planning authority requirements across the region and understand the specific challenges of different areas, from central London to North west london

Q. Why are your prices lower than architects?

We specialize specifically in loft conversion and house extension projects, allowing us to streamline our process and pass savings to clients while maintaining quality. Our focused expertise means efficient service at competitive prices.

Q.How long does the process take?

Survey within 7 days of booking, loft conversion design completed in 2 weeks, and typical planning approval within 6-8 weeks for applications requiring permission. Most clients can start construction within 8-10 weeks.

Q.Designs in 2 weeks

Our streamlined loft conversion design process means we can deliver your loft conversion drawings within 2 weeks of completing the survey. This fast turnaround keeps your project moving forward quickly.

Q.Do loft conversions add value

Research consistently shows that well-executed loft conversion projects can add 15-25% to property values. In London’s property market, this often exceeds the total project cost, making loft conversion one of the smartest home improvements you can make.

Q.How long does it take to get planning permission?

Standard planning permission applications take 6-8 weeks for local council review. However, many loft conversion projects qualify for Permitted Development rights and don’t require planning permission, allowing you to start work much sooner with just building regulation drawings.

Q.Do i need a certificate of lawful development to convert my loft ?

While not always legally required, we recommend obtaining a Certificate of Lawful Development for Permitted Development projects. This provides legal certainty and protects your investment by confirming your loft conversion complies with planning and building regulations.

Get your instant online quote now!

Put £2000* back in your pocket compared to hiring a traditional architect—perfect for financing that new kitchen.