What PAS2035 CONSULTANTS LTD does

PAS2035 Consultants Ltd is a UK-based private consultancy founded and led by CEO Joe Nelson, specialising in PAS2035-compliant retrofit design, retrofit coordination, and energy consultancy services. The firm supports the delivery of large-scale Social Housing Fund (SHF) retrofit programmes for housing associations, councils, and installation contractors across England, with operational concentration in the North West, Greater Manchester, and South East regions. Services are delivered end-to-end — from inception and pre-construction data analysis through to design stages, coordination, technical guidance, and installation lodgement — with the founder personally engaged as a Chartered Architectural Technologist, TrustMark-accredited Retrofit Coordinator, and ECMK-accredited expert.

The company's core technical stack centres on specialist PAS2035 Retrofit Design work combining energy modelling (SAP, RdSAP+), ventilation strategies, heritage impact assessments, heat demand calculations, and overheating analysis, supported by BS EN ISO 10211 (fRsi), BS EN ISO 10077 (U-value), and BRE IP 1/06 thermal bridging calculations. Its proprietary Site Instruction Document (SID) methodology is patented as a focused documentation standard that ensures design intent is followed through to installation and embeds a checklist for Retrofit Coordinators. The firm also offers a data-driven Programme Consultancy service that weights multiple property data points into a single comparative delivery-priority score for social housing programmes, plus Retrofit Coordinator site visits, independent Retrofit Coordination, and training/plan-checking services.

Commercially, PAS2035 Consultants operates on a project-based professional services model with multi-year contract cadences and quotes scoped per project; no standardised pricing tiers are publicly disclosed. Go-to-market combines direct enterprise sales into housing associations and councils, channel partnerships via procurement frameworks (CHIC DPS Framework and ProcurePlus DPS Framework), and long-term strategic partnerships with installers (notably Ecogee, WCL, Regenda Group). The company states it has unlocked delivery of over £50m annually in install value for delivery partners consistently since inception, and serves a stated base of approximately twelve direct clients. The founder retains full ownership and operational control, with no disclosed institutional investors or parent entity.

Name

PAS2035 CONSULTANTS LTD

Legal name

PAS2035 Consultants Ltd

Website

https://pas2035consultants.com

Company type

Private

Founded year

2024

Operating status

Operating

Short description

PAS2035 Consultants Ltd is a UK-based consultancy providing PAS2035 retrofit design, retrofit coordination, and energy consultancy services to housing associations, councils, and installers across large-scale Social Housing Fund programmes.

Ownership category

akta.pro rank

Product category

Retrofit Design and Coordination Consultancy

NAICS

Architectural Services (541310), Architectural Services (54131)

SIC

Services-Engineering Services (8711)

akta.pro primary industry

Energy Efficiency & Weatherization Retrofit (HSAPAEAF)

akta.pro secondary industries

Architectural Reconfiguration & Structural Alterations (HSAPAEAB), Compliance, Safety & Code-Driven Retrofit Programs (NERC CIP, arc-flash, OSHA) (EUAEALAO)

Keywords

• PAS2035 retrofit design
• Retrofit coordination services
• Social housing retrofit
• Energy efficiency consultancy
• Thermal modelling consulting

Headquarters

HQ city

Upholland

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Retrofit Design Services: Detailed Retrofit designs including technical detailing, energy modelling, ventilation strategies, heritage impact assessments, heat demand calculations, and overheating analysis delivered by Chartered Architectural Technologists.
2. Retrofit Coordination Services: Independent Retrofit Coordination providing client side sign off, TrustMark compliance, installer oversight and quality assurance. Can be provided for projects where the company is not assigned as the Designer.
3. Training and Retrofit Plan Checking: Support services for excellence in retrofit including feedback to ensure smooth delivery, direct auditing or training services as required.
4. Data Services for Commercial Buildings: Expanded services to cover commercial and public buildings for data driven lead generation, surveying and design services.

Pricing tiers

Go-to-market motion3 records

Distribution channels4 records

Marketing channels5 records

Core offering

PAS2035 Consultants Ltd delivers specialist PAS2035:2023-compliant Retrofit Design services including technical detailing, energy modelling, ventilation strategies, heritage impact assessments, heat demand calculations, and overheating analysis, alongside independent Retrofit Coordination providing client-side sign-off, TrustMark compliance, installer oversight and quality assurance. Services are delivered by Chartered Architectural Technologists from programme inception through design stages, coordination, and technical guidance, supporting housing associations, councils, installers, and private customers across the UK.

Product overview

PAS2035 Consultants Ltd is a service-based consultancy offering a unified suite of Retrofit design and coordination services. The core offering centers on Specialist Retrofit Design delivered by Chartered Architectural Technologists, complemented by Data driven Programme Consultancy, Energy Modelling (using SAP/RdSAP+), Retrofit Coordinator site visits, Retrofit Coordination, and Training and Retrofit plan checking. These services work together to support customers from inception through to installation and lodgement, providing end-to-end delivery from design through to compliance verification.

Differentiator

Problem solved

Functional benefit

Products and services

• Specialist Retrofit Design Chartered Architectural Technologist-led detailed Retrofit designs including technical detailing, energy modelling, ventilation strategies, heritage impact assessments, heat demand calculations, and overheating analysis for housing associations, councils, installers and private customers undertaking PAS2035:2023-compliant retrofit projects.
• Retrofit Coordination Independent Retrofit Coordination providing impartial compliance oversight, client-side sign-off, TrustMark compliance, installer oversight and quality assurance for retrofit projects. Supports project completion and lodgement deadlines for clients including housing associations, councils and installers.
• Data-Driven Programme Consultancy Programme consultancy from Principal Designers combining industry experience in large scale Social Housing Fund delivery with data points weighted and simplified into a single comparative score for delivery priority based on customer aims. Includes pre-construction data analysis, archetype identification, site selection, and strategic retrofit planning for social housing programmes.
• Energy Modelling Property-level energy modelling using the national Standard Assessment Procedure (SAP) or RdSAP+, with in-depth knowledge of BS EN ISO 10211 (fRsi), BS EN ISO 10077 (U-value), and BRE IP 1/06 thermal bridging calculations to underpin Retrofit Design.
• Retrofit Coordinator Site Visits Expert on-site Retrofit Coordinator visits for high-risk measures or projects requiring enhanced protection, providing quality control services and sign-off reassurance for housing associations, councils, installers and private customers.
• Training and Retrofit Plan Checking Support services for excellence in retrofit, including feedback to ensure smooth delivery and direct auditing or training services as required by housing associations, councils and installers.

Quantifiable outcome

• 53.5% reduction in heat demand achieved for Highfield Bungalows case study
• +5 more outcomes

Named customers9 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

Ten partnerships are on record, tiered core and minor.

• EcogeecoreStrategic or Co-development Partner · 1 January 2024Long-term strategic partnership for LRCA and GMCA pipelines for Retrofit Design and Retrofit Coordination services. Won North West Regional Large Scale Project of the Year 2025 together.
• FairhivecoreStrategic or Co-development Partner · 1 January 2024Consultancy partnership for large scale Social Housing Fund programme including pre-construction data analysis, archetype identification, site selection and strategic retrofit planning. Contributed to Fairhive securing South East Housing Association of the Year award and DESNZ funding.
• Regenda GroupcoreStrategic or Co-development PartnerProviding range of Retrofit services including Energy advice, Energy modelling, Retrofit programme advice, Retrofit Designs, Retrofit Coordination and other consultancy services.
• WCLminorChannel Partner/ Reseller/ DistributorSelected to provide ongoing Design solutions for this national installer after recent delivery on Wave 3 works.
• Salford University (Energy House 2.0)minorStrategic or Co-development PartnerCEO Joe Nelson invited to inspect plans for Retrofit specific research initiative at Energy House 2.0. Company will work to support Professor Fitton in future research and training projects.
• CHIC (Community Interest Company)coreChannel Partner/ Reseller/ DistributorAdopted as trusted Retrofit Design supplier onto the CHIC DPS Framework for housing sector procurement.
• ProcurePluscoreChannel Partner/ Reseller/ DistributorAdopted as trusted Retrofit Design supplier onto the ProcurePlus DPS Framework and awarded the Fairhive Retrofit Design contract. Warm Homes: Social Housing Fund Wave 3 programme making best progress and on track to finish delivery.
• AgilityecominorStrategic or Co-development PartnerWon National Insulation and Fabric Project of the Year 2023 together for retrofit project delivery.
• TrustMarkcoreOthersAccredited with TrustMark (2974605) for Retrofit expert services. Provides installer oversight and quality assurance, protecting design intent and ensuring high quality retrofit outcomes.
• ECMKcoreOthersAccredited with ECMK (303946) as Retrofit expert for compliance and quality assurance.

Scale indicators4 records

Recent moves7 records

Expansion highlights5 records

Broad incumbents

• Carbon Trust: Major UK/international sustainability consultancy advising public and private sector clients on decarbonisation, building retrofit and energy efficiency programmes — broader portfolio but competes for the same housing association and council retrofit mandate.
• Energy Saving Trust: Established UK energy efficiency organisation providing retrofit advice, training and scheme administration to government, housing associations and consumers — operates at greater scale and broader scope but overlaps on retrofit advisory services.
• WSP: Global professional services consultancy with UK buildings and retrofit practice delivering energy efficiency, decarbonisation and programme management to public sector clients — competes with PAS2035 Consultants for large-scale social housing retrofit mandates.
• Mott MacDonald: International engineering consultancy providing buildings, energy and retrofit advisory services to housing associations, councils and government — comparable only as a broader incumbent competing for the same SHF and Warm Homes programme work.
• AECOM: Global engineering and design consultancy with significant UK built-environment practice delivering retrofit, decarbonisation and programme management for housing associations and public sector — competes for large SHF programme mandates that PAS2035 Consultants also targets.

Regional players

• ChangeWorks: Scotland-based environmental and energy efficiency consultancy offering retrofit advice and design services to social housing providers and homeowners — comparable offering to PAS2035 Consultants but with primarily Scottish geography.

Direct peers

• Etude Group: UK energy efficiency and decarbonisation consultancy delivering retrofit design, coordination and programme support for social housing providers, with overlapping PAS2035 advisory and SHF programme delivery capabilities.
• Parity Projects: UK retrofit and energy efficiency consultancy providing PAS2035 retrofit design, coordination, and project management services to housing associations, councils and installers — directly comparable in customer base, regulatory specialism, and service mix.

Emerging players

• Bioregional: UK sustainability consultancy working with housing associations on retrofit programme design, energy modelling and decarbonisation strategy — overlaps with PAS2035 Consultants on social housing retrofit programme advisory.
• Centre for Sustainable Energy (CSE): UK charity providing energy efficiency advice, retrofit coordination and training for housing associations and local authorities — comparable as a not-for-profit retrofit coordinator and training provider in the same PAS2035 ecosystem.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

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 PAS2035 CONSULTANTS LTD