What ECD Architects does

ECD Architects Limited is a UK-based architectural practice founded in 1980, specialising in the design of low-energy, low environmental impact buildings. Operating from three offices—London, Glasgow (headquarters), and Preston (opened September 2023)—the firm delivers professional architectural and consultancy services across residential, education, commercial, and public sectors. The practice holds ISO 9001 (Quality Management) and ISO 14001 (Environmental Management) certifications, Investors in People Silver accreditation, and operates as a member of the N-Able Group alongside sister companies Keegans (quantity surveying, project management, building safety) and PPCR (property and planning consultancy).

The service portfolio centres on Passivhaus design (both new build and EnerPHit retrofit), sustainability consulting, building safety and cladding remediation, new build design, and estate regeneration. Core technical capabilities include fabric-first energy efficiency methodology, Building Information Modelling to ISO 19650 standards, and academic partnerships with the University of Southampton and LSE that yield post-occupancy evaluation data on retrofit performance. The team comprises multiple certified Passivhaus Designers, Retrofit Coordinators, and CEPHD-accredited professionals; Joint Managing Director James Traynor authored 'EnerPHit: A Step by Step Guide to Low Energy Retrofit' published by RIBA Publishing. Notable projects include Wilmcote House in Portsmouth (the largest occupied EnerPHit building globally, an RICS regeneration and design-through-innovation award winner), the £100m Wyndford Estate regeneration masterplan for Wheatley Homes Glasgow, and Thornhill Primary School (first Passivhaus-certified school in Bedfordshire).

Revenue is generated through project-based professional fees for design, planning, and project management services, with pricing varying by scope and complexity. Go-to-market relies on enterprise field sales targeting public sector clients—local authorities, housing associations, and universities—secured through framework appointments (most recently the Rise Construction Framework through March 2030), direct commissions, and design competitions. Primary customer segments are social housing providers, universities and higher education, and local government education departments, with commercial work (e.g. Beam Suntory distillery projects) representing a smaller portion of revenue.

Name

ECD Architects

Legal name

ECD Architects Limited

Website

https://ecda.co.uk

Company type

Private

Founded year

1980

Operating status

Operating

Headcount range

51–100 employees

Short description

ECD Architects is a UK-based architectural practice specialising in Passivhaus design, EnerPHit retrofit, and low-energy building consultancy. Operating from London, Glasgow, and Preston, the firm serves social housing providers, local authorities, universities, and commercial clients.

Ownership category

akta.pro rank

Product category

Architectural Design Services

NAICS

Architectural Services (54131), Architectural, Engineering, and Related Services (5413)

akta.pro primary industry

Architectural Design Services (BPAHAKAA)

akta.pro secondary industry

Historic Preservation & Conservation Planning (BPAHAKAH)

Keywords

• Sustainable architecture
• Passivhaus design
• Building retrofit services
• Energy efficient buildings
• Architectural consultancy

Headquarters

HQ city

London

HQ country

United Kingdom

HQ region

Europe

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales

Revenue model

1. Architectural Design Services: Professional architectural and consultancy services for design, planning, and project delivery across residential, education, commercial, and public sector projects. Revenue is generated through project-based fees for design, consultancy, and project management services.

Go-to-market motion1 record

Distribution channels4 records

Marketing channels6 records

Core offering

ECD Architects is an award-winning architectural practice that designs low-energy, low environmental impact buildings, with specialisation in Passivhaus design for new builds and EnerPHit deep retrofits of existing buildings. The firm delivers professional architectural, sustainability, and building safety consultancy services across residential, educational, commercial, and community sectors in the UK.

Product overview

ECD Architects is an award-winning architectural practice offering professional design and consultancy services for low energy, low environmental impact buildings. The practice operates as a single integrated service with distinct specialisations including Passivhaus design (both new build and EnerPHit retrofit), sustainability consulting, building safety and cladding remediation, new build design, and estate regeneration. Projects span multiple sectors including residential (social housing, affordable homes), education (schools, universities), commercial, and community facilities. The practice holds ISO 9001 and ISO 14001 certifications and is a member of the N-Able Group.

Differentiator

Problem solved

Functional benefit

Products and services

• Passivhaus Design Services Design services for buildings meeting Passivhaus certification standards, focusing on ultra-low energy consumption through high-performance building envelopes, thermal comfort, and mechanical ventilation with heat recovery. Targeted at housing associations, universities, schools, and developers seeking certified low-energy buildings.
• Retrofit Services Energy-efficient retrofit services for existing buildings, including feasibility studies, whole-building assessments, and implementation of decarbonisation strategies following the PAS 2035 framework. Targeted at social housing providers, local authorities, and universities with aging building stock.
• Sustainability Consulting Advisory services for sustainable building design, decarbonisation studies, climate emergency planning, and achieving environmental certifications including BREEAM and net-zero targets. Targeted at public and private sector organisations with sustainability commitments.
• Building Safety and Cladding Remediation Multi-disciplinary professional services for building safety assessments and cladding remediation, including de-cladding and re-cladding works to meet current building regulations. Targeted at building owners, housing associations, and local authorities addressing post-Grenfell safety concerns.
• New Build Design Architectural design services for new construction projects across residential, commercial, educational, and community sectors. Targeted at housing associations, local authorities, universities, and commercial clients requiring sustainable new build facilities.
• Estate Regeneration Comprehensive regeneration services for existing estates, including masterplanning, community engagement, and phased delivery of new homes and facilities. Targeted at housing associations, local authorities, and neighbourhood teams undertaking large-scale community regeneration.

Quantifiable outcome

• Buildings designed to Passivhaus standards use up to 90% less energy for heating and cooling, and up to 70% less energy than conventional buildings
• +4 more outcomes

Named customers11 records

Segments5 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

14 partnerships are on record, tiered core and minor.

• Rise Construction Framework PartnerscoreStrategic or Co-development Partner · 2 April 2026ECD Architects appointed to Rise Construction Framework as one of five suppliers for Group 12: Multi-disciplinary Consultancy Services, operating in partnership with Keegans, Stephenson Halliday, Kendall Kingscott, Silcock Leedham, RoC Consulting, Evolve and Nature Positive. The integrated team offers comprehensive consultancy services covering design, planning, programme management, engineering, cost consultancy, building safety and sustainability across North West, North Wales and Yorkshire & Humber until March 2030.
• N-Able GroupcoreStrategic or Co-development Partner · 1 January 2007ECD Architects became a member of the N-Able Group in 2007, expanding services through sister companies Keegans (quantity surveying, project management, building safety) and PPCR (property and planning consultancy). This membership enables ECD to offer comprehensive, end-to-end consultancy services.
• RankinfraserminorStrategic or Co-development PartnerLandscape architecture partner on the Wyndford masterplan project, providing landscape design for the central green spine and public realm integration.
• Hub West ScotlandminorImplementation/ SI/ Consulting PartnerProject manager on the Wyndford Estate regeneration project, supporting delivery of the community-led masterplan.
• Woolgar HunterminorImplementation/ SI/ Consulting PartnerStructural and civil engineering partner on the Wyndford project, providing engineering services for the regeneration masterplan.
• Carbon FuturesminorImplementation/ SI/ Consulting PartnerEnergy consultancy partner on the Wyndford project, providing energy strategy and sustainability assessment.
• KeeganscoreStrategic or Co-development PartnerSister company within N-Able Group providing quantity surveying and contract administration services on multiple ECD projects including Thornhill Primary School, Royal College Building, and Wilmcote House.
• SymmetrysminorImplementation/ SI/ Consulting PartnerStructural engineer for sub-structure on Thornhill Primary School Passivhaus expansion project.
• EngenuitiminorImplementation/ SI/ Consulting PartnerStructural engineer for super-structure and CLT design on Thornhill Primary School, enabling Passivhaus certification through timber construction.
• Ashe GroupminorImplementation/ SI/ Consulting PartnerMain contractor for Thornhill Primary School Passivhaus expansion, delivering the first Passivhaus school in Bedfordshire.
• Davie + McCullochminorImplementation/ SI/ Consulting PartnerMechanical and electrical consultants on Royal College Robotics South Laboratory project for University of Strathclyde.
• Morris & SpottiswoodminorImplementation/ SI/ Consulting PartnerMain contractor for Royal College Robotics South Laboratory refurbishment, delivering state-of-the-art research facility.
• Lancaster West Neighbourhood TeamminorStrategic or Co-development PartnerClient partner for Verity Close low-energy retrofit pilot on the Lancaster West Estate, working toward carbon neutrality by 2030.
• Retrofit AcademyminorStrategic or Co-development PartnerTraining provider whose Retrofit Designer Certification course Davide Argentieri completed as one of the first cohort, based on PAS 2035 framework.

Scale indicators6 records

Recent moves7 records

Expansion highlights6 records

Direct peers

• Mae Architects: London-based practice focused on Passivhaus, social housing and community-led regeneration, sharing ECD's social housing and education client profile. Known for low-energy housing design and repeat public sector commissions, making it a close comparable on brief type and technical specialism.
• Levitt Bernstein: Long-established London practice with a strong housing association and social infrastructure portfolio, including sustainability-focused design. Comparable on public sector client mix and growing emphasis on retrofit and decarbonisation work.
• Mikhail Riches: London-based architecture practice specialising in Passivhaus and low-energy social housing design, with a comparable client base of housing associations and local authorities and similar award-winning deep retrofit credentials (including the Goldsmith Street Passivhaus scheme). Direct rival for UK sustainable social housing briefs.
• HTA Design LLP: UK practice covering housing, regeneration, education and public sector architecture at a similar scale to ECD, with a comparable focus on sustainable design and large estate regeneration programmes.
• Pollard Thomas Edwards (PTE): Major London-based practice with a long-standing reputation for social housing, estate regeneration and public sector architecture. Overlaps directly with ECD on housing association, local authority and university briefs, particularly in London and the South East.
• Architype: Wales-based Passivhaus pioneer practice with deep expertise in sustainable new-build and retrofit for public sector clients. One of the original UK Passivhaus specialists and a direct competitor for housing, school and regeneration commissions.
• Karakusevic Carson Architects: London practice focused on high-quality social housing, estate regeneration and public sector residential work. Directly comparable on housing association and local authority briefs, with a strong reputation for large-scale masterplans similar to Wyndford.

Emerging players

• Proctor & Matthews Architects: London-based practice with strong credentials in housing, estate regeneration and sustainable design for public sector clients. Comparable scale and project type to ECD, particularly on residential masterplans and Passivhaus housing pilots.

Broad incumbents

• Haworth Tompkins: Established London practice with broad UK housing, education and cultural sector portfolio, including several award-winning sustainability-led projects. Larger and broader than ECD, but a credible incumbent on similar public sector briefs.
• Allies and Morrison: Major UK architecture practice with a broad portfolio across housing, education, public realm and masterplanning. Significantly larger than ECD and not Passivhaus-specialist, but overlaps on higher education, residential and regeneration briefs at scale.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks1 record

Key highlights7 records

Customer concentration

• Xx.com/ecdarchitects
• LinkedInlinkedin.com/company/ecd-architects-ltd

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles5 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about ECD Architects