Insights

Turnkey Architecture Extension Architecture offers end-to-end turnkey solutions across RIBA Stages 0-7, indicating potential opportunities to upsell integrated services such as planning, design, engineering, and delivery coordination to clients seeking a seamless project workflow.

Balanced Growth With a 11-50 employee base and revenue in the $1M–$10M range, the firm is positioned for mid-market projects and regional expansion, presenting sales potential in scaling project sizes, additional service lines, or platform partnerships to support growth.

Accessible Expertise The combination of planning consultants, architects, and engineers suggests cross-selling prospects for multidisciplinary engagements, including planning advice, feasibility studies, and integrated design reviews to improve proposal success and investment returns.

Digital Footprint Active use of multiple digital channels and a cloud-based tech stack indicates readiness for marketing automation, client portals, or BIM-enabled collaboration tools to enhance client experience and project efficiency.

Sustainability Focus Emphasis on natural light, warm interiors, accessibility, and holistic experiences points to opportunities in sustainable design services, daylighting analysis, accessibility compliance, and energy-efficiency strategies for prospective clients.

Extension Architecture Tech Stack

Extension Architecture uses 8 technology products and services including QuickBooks, Microsoft Clarity, AutoCAD, and more. Explore Extension Architecture's tech stack below.

QuickBooks

Accounting And Finance

Analytics

Cad & Graphics

Cad & Graphics

Cookie Compliance

Design

Video Players

Web Analytics

Extension Architecture Email Formats	Example	Percentage
First@extensionarchitecture.co.uk	John@extensionarchitecture.co.uk	100%

Extension Architecture Email Formats

Example

Percentage

First@extensionarchitecture.co.uk

John@extensionarchitecture.co.uk

100%

Frequently Asked Questions

What is Extension Architecture's phone number?

You can contact Extension Architecture's main corporate office by phone at

+44-20-7801-****

. For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is Extension Architecture's official website and social media links?

Extension Architecture's official website is extensionarchitecture.co.uk and has social profiles on LinkedIn.

How much revenue does Extension Architecture generate?

As of August 2026, Extension Architecture's annual revenue is estimated to be $1M - $10M.

What is Extension Architecture's NAICS code?

Extension Architecture's NAICS code is 54131 - Architectural Services.

How many employees does Extension Architecture have currently?

As of August 2026, Extension Architecture has approximately 35 employees across 2 continents, including Europe and Asia. Key team members include Founder: Y. K., Managing Director: Y. K. and Social Media Manager: A. S. Explore Extension Architecture's employee directory with LeadIQ.

What industry does Extension Architecture belong to?

Extension Architecture operates in the Architecture and Planning industry.

What technology does Extension Architecture use?

Extension Architecture's tech stack includes QuickBooks, Microsoft Clarity, AutoCAD, SketchUp, CookieYes, Figma, Vimeo and Piwik PRO Core.

What is Extension Architecture's email format?

Extension Architecture's email format typically follows the pattern of First@extensionarchitecture.co.uk. Find more Extension Architecture email formats with LeadIQ.

When was Extension Architecture founded?

Extension Architecture was founded in 2010.

Extension Architecture

Q: How many employees does Extension Architecture have currently?

Extension Architecture has approximately 35 employees.

Q: What technology does Extension Architecture use?

Extension Architecture's tech stack includes Figma, Really Simple Discovery, Yoast SEO, WhatsApp Business, jQuery UI.

Q: What is Extension Architecture's NAICS code?

Extension Architecture's NAICS code is 54131 (Architectural Services).

Architecture and PlanningEngland, United Kingdom11-50 Employees

Extension Architecture is a London-based architectural and planning practice located at 231 Roehampton Lane, 1st Floor, London SW15 4LB, United Kingdom. The firm employs a team of planning consultants, architects and engineers and guides clients through the RIBA Stages 0-7 with turnkey, end-to-end solutions. With 16 years of experience, the practice emphasizes transforming spaces through design that prioritizes aesthetics, accessibility, natural light, warm interiors and thoughtful detailing. The company operates with a staff in the 11-50 range and serves clients within its industry. More information is available on its website at https://extensionarchitecture.co.uk, and inquiries can be directed by phone at 0207 801 0566 or by email to info@extensionarchitecture.co.uk.

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