Extension Plans London

Extension Plans London: We are your one-stop shop for architectural solutions for home extensions and conversions throughout London. Our services include extension Planning Applications, Building Regulations, Structural Calculations, and Party Wall Surveying services

Quick Enquiry

Complete the form below and we will be in touch to discuss your enquiry shortly.

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Extension Plans for your project in London

Extension Plans London: We provide a range of architectural services for homeowners in London looking to carry our home extensions and loft conversions, including Planning Applications, Building Regulations, structural calculations and party wall surveying.

Fixed Fee

We offer a fixed price on all our planning & building regulation drawings, so you now what you’ll pay.


We believe that simple home extension drawings shouldn’t break the bank and, therefore, offer highly competitive pricing.

Quick Turnaround

We turn our drawing around within 10 working days from the date we receive the property measurements.


We never compromise on quality. Our drawings are fully compliant and just like you’d get from an architect, only cheaper.

Single Storey Extensions

Two Storey Extensions

Two Storey Extensions

Garage Conversions

Basement Extensions

Garden Offices

extension plans london

Extension Architectural Services

We offer a range of professional architectural services for homeowners looking to undertake extensions to their properties, including:

Planning Applications

We prepare fully compliant Planning Application drawings which are ready to submit to your local authority. We also manage the application for you.

Building Regulations

We prepare drawings and notes for Building Regulations applications which are ready to be sent to your building control officer for both Full Plans & Building Notices.

Structural Calculations

We work with highly experienced structural engineers who can provide accurate structural calculations and drawings for your project.

Party Wall Surveying

We have experienced RICS Chartered Party Wall Surveyors who can provide impartial advice on the Party Wall Act and its implications for your project.

About Murrins

Since 2015, Murrins has provided hundreds of homeowners with professional architectural planning and building regulations drawings for their home extensions and conversions.

Our small team consists of RICS Chartered Surveyors and experienced architectural designers with years of experience in residential architectural design. Based in the South East, we work with clients across the country, particularly around Kent, Surrey, Sussex, Essex, and Greater London.

Sample Projects

an image showing a single storey extension with large bi-folding doors and a timber decked patio
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block of flats during a rics level 2 homebuyer survey
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Enquire now about your Project

Get in touch to speak to us about your project, or for a free no-obligation quote.

Or call us on 0207 112 8877, or email your enquiry to contact@murrins.co.uk.

Get in touch

For a free, no-obligation quote for any of our services, simply complete the form and we will be in touch shortly.

Or call us on 0207 112 8877, or email your enquiry to contact@murrins.co.uk.

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Quick Enquiry

Complete the form below and we will be in touch to discuss your enquiry shortly.