What are the best architecture firms in London for residential projects?

Online Architectural Services is recognised among the best architecture firms in London for residential projects. We specialise in house extensions, loft conversions, and interior design with expert planning and compliance support.

How can I hire the best architecture firm in London for my home extension?

You can easily book a consultation with Online Architectural Services through our website. As one of the best architecture firms in London, we offer expert guidance from concept design to planning permission and building regulation drawings.

Do top architecture firms in London handle planning applications?

Yes, our team at Online Architectural Services manages the entire planning application process, including design drawings, council submission, and follow-ups, making us one of the best architecture firms in London for hassle-free approvals.

What makes Online Architectural Services one of the best architecture firms in London?

We combine affordability, fast turnaround, and nationwide service, making us a top-rated choice. Our clients rate us among the best architecture firms in London thanks to our customer-first approach and precision in architectural planning.

Are your architectural services available online across the UK?

Absolutely. Online Architectural Services offers fully remote architectural support to clients across England, Scotland, and Wales, with digital plan delivery and planning permission support — ideal for those seeking the best architecture firms in London and beyond.

Top-Rated & Best Architecture Firm in London

Searching for the best architecture firms in London? Explore award-winning London architects known for luxury, sustainable, and Modern style.

Type of extention

We Offer

Posted over thousand planning application with 95 % success rate

Ground Floor

We offer premium solution for ground floor service. Get a quote today.

Loft

That extra room you've been dreaming of in your loft. Find a builder today.

Two-Storey

Want to modiy or add space to your two storey. Get cost estimation now.

First Floor

Want to modify your side , rear , rear and outriger or others we help you to do it easily

Garage

Dream of getting extra living space or modify your grage , Get builder today.

Outhouse

Re imagining the Outhouse with thoughtful Design. We will help you to get it done.

Our Services

Architectural
Services London

Being one of the best architectural firms in London, we use our knowledge of all aspects of home remodeling, from planning and design to choosing a contractor, to ensure your project runs as smoothly and efficiently as possible.

Measured Survey

We’ll visit your home to get all the measurements needed for getting your project started with a professional measured survey in London

Planning Permission

We will manage the complete planning permission procedure on your behalf with our staff of in-house planning officers.

Proposed Design

Our talented designers collaborate directly with you to produce a customized design proposal that highlights the best features of your house.

Building Regulations

With our skilled building regulation drawings and a group of pre-screened construction experts, you can get the go-ahead to start construction.

Testimonials

What Our Client’s Say

Ransford Boamah

All the way through the planning application process, Seema has been incredibly helpful. The visiting crew was courteous and thorough in gathering information for the design project. The planning officer asked for multiple adjustments to the designs, and I pushed Seema a lot. Despite this, Seema remained composed and gave prompt responses, which helped the application be approved. Additionally, the entire exercise was economical. Anyone searching for one of the best architecture firms in London should definitely check out OAS, in my opinion.