Insights

Heritage leadership Leverage DIA’s status as a leading, employee-owned heritage practice with a 65+ year track record to position services around strategic conservation governance, risk mitigation, and long-term stewardship for clients with historic assets.

Award momentum capitalize on recent AJ100 Practice of the Year and multiple conservation awards to validate capabilities in high-profile projects like Rochdale Town Hall, using these wins to command premium bids and secure referrals from public-sector and cultural institutions.

Sustainability focus frame sustainability as a core differentiator in conservation and adaptive reuse, targeting policymakers, funders, and developers seeking resilient, future-ready heritage solutions that balance preservation with modernization.

Cross-disciplinary reach emphasize DIA’s integrated expertise in conservation, design in historic settings, and townscape advice, appealing to clients needing holistic project teams for complex heritage schemes and urban regeneration.

Technology enablement highlight the tech stack (AutoCAD, SketchUp, BIM-ready tools, cloud collaboration) to attract clients who require precise documentation, immersive design visualization, and efficient project delivery for sensitive historic environments.

Similar companies to Donald Insall Associates

Donald Insall Associates Tech Stack

Donald Insall Associates uses 8 technology products and services including Adobe Creative Cloud, AutoCAD, SketchUp, and more. Explore Donald Insall Associates's tech stack below.

Media & News

Donald Insall Associates's Email Address Formats

Donald Insall Associates uses at least 4 email formats:
Donald Insall Associates Email FormatsExamplePercentage
First.Last@insall-architects.co.ukJohn.Doe@insall-architects.co.uk
98%
First.Middle@insall-architects.co.ukJohn.Michael@insall-architects.co.uk
1%
First.MiddleLast@insall-architects.co.ukJohn.MichaelDoe@insall-architects.co.uk
1%
First.Last@dia.co.ukJohn.Doe@dia.co.uk
100%

Frequently Asked Questions

What is Donald Insall Associates's official website and social media links?

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Donald Insall Associates's official website is dia.co.uk and has social profiles on LinkedIn.

How much revenue does Donald Insall Associates generate?

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As of August 2026, Donald Insall Associates's annual revenue is estimated to be $1M - $10M.

What is Donald Insall Associates's SIC code and NAICS code?

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Donald Insall Associates's SIC code is 8299 - Schools and Educational Services, Not Elsewhere Classified and NAICS code is 54131 - Architectural Services.

How many employees does Donald Insall Associates have currently?

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As of August 2026, Donald Insall Associates has approximately 162 employees across 2 continents, including Europe and North America. Key team members include Head Of People: M. H., Head Of Digital Delivery: G. F. and Head Of Information Technology: A. A. Explore Donald Insall Associates's employee directory with LeadIQ.

What industry does Donald Insall Associates belong to?

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Donald Insall Associates operates in the Architecture and Planning industry.

What technology does Donald Insall Associates use?

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Donald Insall Associates's tech stack includes Adobe Creative Cloud, AutoCAD, SketchUp, Microsoft 365, Sage, Microsoft Azure, Microsoft Teams and DigitalOcean Web Hosting.

What is Donald Insall Associates's email format?

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Donald Insall Associates's email format typically follows the pattern of First.Last@insall-architects.co.uk. Find more Donald Insall Associates email formats with LeadIQ.

When was Donald Insall Associates founded?

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Donald Insall Associates was founded in 1958.
Donald Insall Associates logo

Donald Insall Associates

Architecture and PlanningEngland, United Kingdom51-200 Employees

Donald Insall Associates is an architecture and planning practice based in London with a long history of shaping heritage conservation. For more than 65 years, the firm has treated conservation as a dynamic process of managing change, aiming to keep historic environments purposeful and resilient. Operating as an employee-owned practice with national reach, it provides expertise in conservation, heritage consultancy, new design in historic settings, and townscape advice.

Its client base spans organizations involved in heritage management, with a collaborative approach that bridges architecture, design, and heritage consultancy to deliver solutions for clients, partners, and communities. Recent projects and recognition, such as the 2026 awards for the Rochdale Town Hall restoration, illustrate the firm's role in delivering high-quality conservation work.

Section iconCompany Overview

Website
dia.co.uk
SIC Code
8299 - Schools and Educational Services, Not Elsewhere Classified
NAICS Code
54131 - Architectural Services
Founded
1958
Employees
51-200

Section iconFunding & Financials

  • $1M - $10M

    Donald Insall Associates's revenue is estimated to be in the range of $1M - $10M

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