COMPLETE SUSTAINABILITY SOLUTIONS LTD

What COMPLETE SUSTAINABILITY SOLUTIONS LTD does

Complete Sustainability Solutions Ltd is a UK-based sustainability consultancy headquartered at 76 King Street, Manchester, providing an integrated 12-service offering for the built environment sector. The company serves property developers, housebuilders, architects, design teams, landlords, property investors, local planning authorities, and public sector clients, with on-site testing operations covering England and Wales. Its service portfolio spans the full building lifecycle — from feasibility and planning through construction, commissioning, and handover — covering energy compliance, environmental assessment, and physical building performance testing.

The firm's twelve service lines include SAP EPC calculations for residential buildings, SBEM calculations for commercial properties, BREEAM and Home Quality Mark assessments, air leakage, sound, and vent testing, water efficiency calculations, sustainability and energy statements, overheating analysis, and Minimum Energy Efficiency Standards (MEES) advisory. Service delivery uses government-approved software including SAP, SBEM, and Dynamic Simulation Modeling tools. The firm holds memberships in five UK accreditation bodies — the Building Research Establishment, CIBSE, the Institute of Environmental Management & Assessment, the Independent Airtightness Testing Scheme, and Elmhurst — supporting delivery across Part L, Part F, and Part G building regulations, BREEAM, MEES, and Home Quality Mark frameworks.

The business operates on a project-based professional services model with bespoke pricing tied to service type, number of dwellings, and project iterations; no subscription or recurring pricing is offered. Distribution is exclusively direct: clients engage via phone (0161 706 0298), email, and the website contact form, and services are delivered through on-site visits for physical testing and desk-based consultancy for calculations and reporting. The company positions itself as a small expert team led by two long-tenured consultants — Andy Graves and Matt Holland — reporting client relationships of nearly a decade with enterprise customers including Lovell Partnerships, Hollins Homes, PJ Livesey, Eric Wright Group, Millfield Estates, and CAPD.

Name

COMPLETE SUSTAINABILITY SOLUTIONS LTD

Legal name

Complete Sustainability Solutions Ltd

Website

https://completesustainability.co.uk

Company type

Private

Founded year

2006

Operating status

Operating

Headcount range

1–10 employees

Short description

Complete Sustainability Solutions Ltd is a Manchester-based sustainability consultancy providing 12 integrated services — including SAP EPC, SBEM, BREEAM, air leakage testing, and MEES compliance — for property developers, architects, landlords, and public sector clients across England and Wales.

Ownership category

akta.pro rank

Product category

Sustainability and Environmental Compliance Consultancy

NAICS

Environmental Consulting Services (541620), Testing Laboratories and Services (54138)

akta.pro primary industry

Sustainability & ESG Reporting (GRI/SASB/ISSB/CSRD) (EUAHAJAB)

akta.pro secondary industry

Energy & Water Efficiency Programs (Corporate Resource Management) (EUAHAJAG)

Keywords

• Sustainability consultancy
• Building energy assessments
• BREEAM assessment
• Air leakage testing
• SAP EPC calculations

Headquarters

HQ city

Manchester

HQ country

United Kingdom

HQ region

Europe

Offices2 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Sustainability Consultancy Services (Project-Based): The company charges for bespoke sustainability consultancy and compliance services. Pricing is tailored to individual client needs and affected by the type of service required, number of dwellings, and iterations. Services are typically priced as one-off project fees or per-assignment fees. No subscription model is described. The company emphasises transparency with free, no-obligation quotations.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels5 records

Core offering

Complete Sustainability Solutions provides sustainability consultancy, building energy assessments, and environmental compliance services for the UK built environment. Its offerings cover the full project lifecycle from feasibility and planning through construction, commissioning and handover, including BREEAM assessments, SAP and SBEM energy calculations, air leakage testing, sound and vent testing, water efficiency calculations, sustainability statements, overheating analysis, MEES compliance, and Home Quality Mark certification.

Product overview

Complete Sustainability Solutions Ltd is a sustainability consultancy firm offering a comprehensive suite of professional consulting services for the UK built environment sector. The company operates as a single integrated service offering with twelve distinct service lines covering the entire building lifecycle: from feasibility and planning (Energy Statements, Feasibility Reports, Sustainability Statements) through construction compliance (SAP EPC, SBEM Calculations, Air Leakage Testing, Sound Testing, Vent Testing, Water Efficiency Calculations) to post-construction certification (BREEAM Assessment, Home Quality Mark, MEES compliance). The services are delivered by experienced sustainability consultants using government-approved software including SAP Environmental Product Declaration software and SBEM modelling tools, and include advisory services such as Overheating Analysis for thermal comfort compliance.

Differentiator

Problem solved

Functional benefit

Products and services

• Air Leakage Testing
• BREEAM Assessment
• Energy Statements / Feasibility Reports
• Home Quality Mark (HQM)
• Minimum Energy Efficiency Standards (MEES)
• Overheating Analysis
• SAP EPC Calculations
• SBEM Calculations
• Sound Testing
• Sustainability Statements
• Vent Testing
• Water Efficiency Calculations

Quantifiable outcome

• Air leakage testing can identify issues before handover, preventing costly post-construction remediation
• +2 more outcomes

Named customers8 records

Segments5 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Scale indicators3 records

Recent moves3 records

Expansion highlights4 records

Broad incumbents

• Arup: Global engineering and sustainability consultancy with deep UK built-environment practice. Competes in BREEAM coordination, energy and sustainability advisory at the top end of the market, dwarfing boutique consultancies in scale.
• Carbon Trust: Established UK organisation providing sustainability advisory, carbon-footprinting and built-environment services to corporates and developers. Comparable in regulatory and energy-efficiency advisory work but operates at a far larger scale and broader mandate.
• Hoare Lea: Large UK engineering consultancy with a dedicated sustainability and energy practice serving built-environment projects. Overlaps in BREEAM, energy modelling and sustainability strategy, though as part of a wider MEP/engineering portfolio.
• BSRIA: UK building-services research and consultancy organisation covering energy, sustainability and compliance testing. Comparable on testing methodology and energy efficiency advisory, at greater scale.
• WSP Built Environment Sustainability: Global engineering consultancy with a UK sustainability practice delivering BREEAM, energy modelling and sustainability statements. Overlapping service lines but serves much larger mixed-use and infrastructure projects.
• Ramboll UK: Global engineering, design and consultancy firm with sustainability services for buildings in the UK. Comparable in BREEAM, energy strategy and net-zero advisory for built-environment clients, though with broader sectoral reach.
• BRE Group: Building Research Establishment operates the BREEAM and Home Quality Mark schemes and offers consultancy and certification services. Same regulatory frameworks, though BRE is the scheme owner rather than a competing boutique consultancy.

Direct peers

• AES Sustainability Consultants: UK-based small sustainability consultancy offering BREEAM, SAP/SBEM, energy statements and related built-environment compliance services — directly overlapping Complete Sustainability Solutions' core service mix and target customer base of developers and architects.
• Stroma: UK building-compliance provider offering SAP, SBEM, air-tightness testing, EPCs and sustainability services to developers — directly comparable testing-and-assessment portfolio targeting the same construction market.
• Inbuilt: UK consultancy delivering sustainability statements, energy assessments and BREEAM coordination for residential and commercial developments. Closely comparable service stack and client base to Complete Sustainability Solutions.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat3 records

Key risks5 records

Key highlights6 records

Customer concentration

• Xtwitter.com/CompleteSustai1
• LinkedInlinkedin.com/company/complete-sustainability-solutions-ltd

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 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 COMPLETE SUSTAINABILITY SOLUTIONS LTD