House Extension Services London
A trustworthy home extension company that offers innovative designs and structural precision to London’s homeowners. Our experts provide a variety of designs to choose from for your homes. Our home extension architects in London understand the unique needs of every individual.
Professional Home Extension Drawings London

To unlock the potential of your homes with professional home extension drawings, Plansing has been assisting homeowners for many years. Along with the designs, we also take care of the structural integrity and the planning approval from the local councils for your projects.
Our home extension architects in London, and chartered engineers work together to create precise and detailed drawings for your range of home extensions. Our services undertake the architectural drawings and structural calculations, all under one roof, to assist you in every possible way.
Types of Home Extension We Offer
Expanding your home is more than just adding space; it’s about transforming how you live. This is where Plansing comes to cover the range of home extension services with customised solutions that will fit your lifestyle and preferences. To ensure every extension is built to last, we offer several options that include:

Single Storey Extension
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Create more room for what matters. Perfect for expanding your kitchens, dining or living areas and adds functional space. Our best home extension in London designs will flood your homes with natural light.
Double Storey Extension
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Twice the space and add value. This is an ideal option if you need more space upstairs or downstairs. It benefits growing families, home offices, and large living spaces. We can be your top choice for your house extension needs nearby.


Open-Plan Living Extension
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Our combination of architectural and structural precision helps you create the most innovative open-plan living extensions for your buildings. Our professionals will blend your kitchen, dining, and living space into a great social hub.
Wrap Around Extension
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We combine side and rear extensions to create large, open-plan areas to add more family rooms or increase the space. Our wrap-around extension plans will provide you with maximum ground-floor space.


Side Return Extensions
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A side return extension extends your home into the unused alleyway space along the narrow sideways to your property. This type of extension is often seen in Victorian or Edwardian houses.
Get a Professional Home Transformation With Plansing
Transform your homes with Plansing, a best home extension company in London. Our team prides itself on being a flexible choice for homeowners. There are several reasons to choose, and some of them are listed below:

100% Assurance
Assurance of work by offering quality workmanship without compromising the quality.

Unbeatable Expertise
Find the expertise that is unmatched and can transform the visual charm of your property.

Chartered Architects
Our chartered architects create bespoke designs that combine creativity with functionality.

Building Protection
We prioritise the safety and integrity of your building, ensuring it is in full compliance with building regulations.
Testimonials
GOOD Based on 28 reviews Rumi Das2024-11-06Trustindex verifies that the original source of the review is Google. Following a boundary issue, they helped secure a fair and timely party wall award. Their legal expertise made the entire process smooth, and I’m credibly grateful for their support—it saved me from a lot of stress. Thanks Ra2024-11-04Trustindex verifies that the original source of the review is Google. I hired professional architects and engineers from Plansing for my remodeling project, and what I do is just sit back and watch them showcase their skills. I was happy with the final results. Nazi Finley2024-10-29Trustindex verifies that the original source of the review is Google. I had a result from the first time I used Plansing for my Site survey Project. Having read some of the reviews i was almost in two minds whether to order or not. But I gave them a go - no problems what so ever. Good communication and quick deliver service for Site survey. Cheaper than other sites too Will use again. Moru Flex2024-09-16Trustindex verifies that the original source of the review is Google. Plansing was able to complete our partition wall project on schedule and within budget, even though we had a strict deadline. They always went above and beyond to make sure we were happy, and their crew was really well-organized and productive. Their dedication to high-quality work and their attention to detail really pleased us. Kurt Smith2024-08-16Trustindex verifies that the original source of the review is Google. This is an formal firm to deal with. After the free survey, where the surveyor modified my error on the type of loft support I wanted. No deposit was required. During the time between survey the office team reserved me updated on the process. About a week already they arranged for a primary start and finish to avoid the worst of the heat that was prediction. The loft space took 69sq meters of insulation and 220sq foot of new boarding. Their work is guaranteed for 10 years! I would strongly recommend them.
Owner's reply
Thank you so much for your kind review! We’re pleased to hear that you had a positive experience with our team. Your satisfaction with the insulation and boarding, along with our 10-year guarantee, means a lot to us. Thank you for recommending us, and if you need anything in the future, we’re here to help! Best regards, PLANSING TEAM Antonia Orr2024-07-18Trustindex verifies that the original source of the review is Google. I purchase architectural drawing, the team is knowledgeable and honest, my project completed on the time. Thanks plansing
Owner's reply
"Thank you for your wonderful review, Antonia Orr. We're delighted to hear that you found our team knowledgeable and honest, and that your project was completed on time. Your satisfaction is our top priority, and we appreciate your kind words. We look forward to working with you again in the future!"
FAQs
In most cases, small home extensions fall under permitted development. If your home extension exceeds 50% of the original area of the building, then you will need planning permission for it. You will need to check your local council to be sure.
In general, a home extension takes 3 to 6 months to complete, depending on the size, location, and complexity of the project. Some factors, such as planning approval, weather conditions, or natural disasters, can also affect the timeline.
A well-designed home extension can add worth to your property, attract homebuyers, and be a significant investment in the future. Depending on the quality of work and the local market condition, it often increases up to 15-20% of the value of your property.
If your extension affects a shared wall with a neighbour, you may need a Party Wall Agreement per the Party Wall Act 1996. This legal agreement helps avoid disputes and is often required in London due to closely built properties.
To ensure that your home extension is environmentally friendly, utilise sustainable materials, install energy-efficient insulation, windows, and heating systems, and consider renewable energy sources such as solar systems.
- Initial project plans
- Plans layout
- Technical drawings
- Planning application advice