# www.hollenplus.com > HollenPlus is a Chartered Surveyor-led consultancy delivering commercial building retrofit, decarbonisation, MEES & EPC strategy, and BREEAM assessments across the UK. Protect capital value with Level 5 DSM, WLCA, TM54 and CRREM modelling. ## Our mission - [Our Mission: Driving Decarbonisation in Commercial Real Estate](https://www.hollenplus.com/our-mission): HollenPlus is committed to accelerating decarbonisation in commercial real estate, enhancing financial returns for businesses, while improving sustainability & reducing operational costs. ## Services - [Commercial RetroFit & Sustainability Services | BREEAM, EPC & ESG](https://www.hollenplus.com/services): Expert sustainability consultancy for commercial real estate. Leading UK services in BREEAM, Level 5 EPC, CRREM Pathways, Retrofit Strategy, and ESG Accreditations. - [Commercial Energy Efficiency Services London](https://www.hollenplus.com/services/commercial-energy-efficiency): Optimise commercial building performance with HollenPlus. Reduce energy waste and carbon footprints with low cost solutions that deliver big savings. - [EPC Pathway for Commercial Real Estate](https://www.hollenplus.com/epc-pathway): Costed EPC pathways delivered through an asset management mindset, aligned with the business plan and building lifecycle. - [CRREM Strategy & Net Zero Pathways](https://www.hollenplus.com/crrem-pathway): Expert CRREM consulting to decarbonise and de-risk commercial portfolios. Align assets with 1.5°C pathways. - [TM54 Energy Modelling & Net Zero Strategy](https://www.hollenplus.com/tm54-operational-energy-modelling): Specialist CIBSE TM54 operational energy modelling for UK commercial real estate. - [Whole Life Carbon Assessment (WLCA) Services](https://www.hollenplus.com/whole-life-carbon-assessment): Prevent stranded assets and secure net-zero alignment with expert Whole Life Carbon Assessments. - [Commercial RetroFit Strategy](https://www.hollenplus.com/commercial-retrofit-strategy): Clear, concise, costed Commercial RetroFit Strategy solutions to add value and increase returns. - [Decarbonisation & Net Zero Pathways for Buildings](https://www.hollenplus.com/decarbonisation-net-zero): Tailored building decarbonisation pathways using energy efficiency strategy & sustainable design. - [Residential Portfolio Retrofit Strategy & MEES](https://www.hollenplus.com/residential-retrofit-strategy): RICS Chartered Surveyor led residential retrofit strategy to navigate MEES & Home Energy Model (HEM). - [Commercial Building Heat Resilience & Overheating](https://www.hollenplus.com/commercial-building-heat-resilience): Overheating mitigation, CIBSE TM52 modelling, and low-CAPEX heat resilience. - [ESOS Phase 4 Compliance & ESOS Lead Assessor](https://www.hollenplus.com/esos-lead-assessor-phase-4-compliance): Navigate ESOS Phase 4 compliance with Lead Assessor services and commercial energy audits. ## Core Accreditations & Core Assessments - [BREEAM V7 & V6.1 Assessor London | Expert AP Services](https://www.hollenplus.com/breeam-assessment): Trusted BREEAM Consultants offering assessment and certification for refurbishment, new construction, and existing certified buildings. - [Level 5 EPC London | Assessment & Dynamic Simulation Modelling (DSM)](https://www.hollenplus.com/level-5-epc): Level 5 EPC assessments using Dynamic Simulation Modelling (DSM) for accurate energy analysis & compliance. - [ESG Consultant London | ESG Consulting & Accreditations](https://www.hollenplus.com/esg-consultant): Expert ESG consultancy and accreditation services focused on delivering cost-effective client sustainability goals. - [WELL Assessment London | WELL Certification](https://www.hollenplus.com/well): WELL Building Assessments and certification for refurbishment, new construction, and existing buildings. - [ACTIVESCORE Assessment London](https://www.hollenplus.com/activescore): ActiveScore certification, consultancy, and assessments to enhance active travel and ESG credentials. - [MODESCORE Assessment London](https://www.hollenplus.com/modescore): ModeScore assessment and certification to align mobility with asset sustainable transport credentials. - [UK Net Zero Carbon Buildings Standard (UKNZCBS) Consultants](https://www.hollenplus.com/uk-net-zero-carbon-buildings-standard): Expert guidance on Net Zero Carbon compliance, whole-life carbon assessments, and sustainable building performance. ## Insights - [HollenPlus Insights](https://www.hollenplus.com/insights): Discover expert guidance on improving asset values with BREEAM, MEES, EPC, ESG, and Planning strategy. - [Unlocking Asset Value in Commercial Real Estate Through ESOS Phase 4](https://www.hollenplus.com/insights/esos-phase-4-asset-value-commercial-real-estate): Transform ESOS Phase 4 compliance into commercial property value. - [Residential Portfolio Retrofit: Archetype Modelling & Capex Strategy](https://www.hollenplus.com/insights/residential-portfolio-retrofit-capex-optimisation): Optimise residential retrofit capex using archetype dynamic modelling. - [The Financial Case for ActiveScore: Boosting Asset Value](https://www.hollenplus.com/insights/the-financial-case-for-activescore): Discover how ActiveScore certification enhances ESG credentials and drives asset value. - [Transition Capex: Prioritising Decarbonisation Spend](https://www.hollenplus.com/insights/transition-capex-decarbonisation): Minimise cost and risk ahead of 2031 MEES regulations using Level 5 DSM, TM54, and WLCA. - [PRS MEES EPC C Rules: Spend Caps & Grandparenting Strategy](https://www.hollenplus.com/insights/prs-mees-epc-c-rules): Strategic guide to proposed PRS MEES regulations and landlord spend caps. - [The June 2026 Non-Domestic MEES Interim Response](https://www.hollenplus.com/insights/commercial-mees-update-2026): Navigation guide for the 2031 EPC B mandate for buildings over 1000 sqm. - [Navigating Residential RetroFit, Part 1: The Home Energy Model (HEM) Transition](https://www.hollenplus.com/insights/home-energy-model-hem-vs-rdsap-transition): RICS Chartered Surveyor analysis on the RdSAP to HEM transition. - [BREEAM V7 & The Fossil Fuel Ban](https://www.hollenplus.com/insights/breeam-v7-fossil-fuel-ban-outstanding-excellent): Using TM54 modelling to de-risk electrification and protect asset yield under BREEAM V7 rules. - [BREEAM V7 20-Day Rule: Why Early LCA is Mandatory](https://www.hollenplus.com/insights/breeam-v7-20-day-lca-rule): Learn why the V7 Mat 01 Concept Stage LCA must be submitted within 20 days of planning. - [Discover How the 2022 Carbon Factor Change Impacts Your Commercial EPC Rating](https://www.hollenplus.com/insights/how-does-the-2022-change-in-carbon-factors-affect-my-epc-rating): Explaining how updated SBEM v6.1 software shifts baseline calculations for electric vs gas properties. ## Projects - [HollenPlus Projects](https://www.hollenplus.com/projects): Case studies showcasing decarbonisation, EPC services, and strategic sustainability planning. - [Industrial Refurbishment & EPC A Sustainability | Cambridge](https://www.hollenplus.com/projects/industrial-refurbishment-cambridge): Achieving an EPC A rating through solar PV, EV charging, and re-cladding. - [St Paul’s House London: EPC B, ActiveScore & MODESCORE Gold](https://www.hollenplus.com/projects/st-pauls-house-london-activescore-modescore-gold): Securing triple sustainability targets for active travel and sustainable office refurbishments. - [The Shipping Building London: £5m Asset Decarbonisation](https://www.hollenplus.com/projects/the-shipping-building): Managing building refurbishment from M&E replacement to BMS optimisation. - [World’s First ActiveScore Platinum 100 | Castlemead Bristol](https://www.hollenplus.com/projects/activescore-platinum-100-castlemead): How a £3.4m CAPEX strategy drove a 25% rent uplift and improved EPC ratings. - [Southbank Office Retrofit (160k sqft)](https://www.hollenplus.com/projects/southbank-office-retrofit-breeam-level-5-epc): Delivering BREEAM Excellent, WELL Platinum, and Level 5 EPC A via DSM modelling. ## Our Team & Corporate - [Our Team: Leaders in Real Estate & Sustainability Solutions](https://www.hollenplus.com/our-team): Meet our core professionals, including Greg Davison, James Hobday, Guy Rockingham, Daniel Young, and Amy Holland. - [Our Clients](https://www.hollenplus.com/our-clients): Trusted by M&G, ARAX, Carlyle, abrdn, Revantage, FIERA, Schroders, and LaSalle. - [Get in Touch With Us](https://www.hollenplus.com/contact): Contact details at contact@hollenplus.com or call 020 8050 1844. ## Regional Coverage (BREEAM, EPC & WELL Services) HollenPlus provides commercial energy assessments, BREEAM consulting, and sustainability engineering across all key regions in the UK: - **London & South East:** [London EPC](https://www.hollenplus.com/commercial-epc-london), [Surrey](https://www.hollenplus.com/commercial-epc-surrey), [Sussex](https://www.hollenplus.com/commercial-epc-sussex), [Hampshire](https://www.hollenplus.com/commercial-epc-hampshire), [Guildford](https://www.hollenplus.com/commercial-epc-guildford), [Maidenhead](https://www.hollenplus.com/commercial-epc-maidenhead), [Watford](https://www.hollenplus.com/commercial-epc-watford). - **Midlands:** [Birmingham EPC](https://www.hollenplus.com/commercial-epc-birmingham), [Birmingham BREEAM](https://www.hollenplus.com/breeam-assessment-birmingham), [Coventry](https://www.hollenplus.com/commercial-epc-west-coventry), [Nottingham](https://www.hollenplus.com/commercial-epc-nottingham), [Derby](https://www.hollenplus.com/commercial-epc-derby), [Leicester](https://www.hollenplus.com/commercial-epc-leicester). - **North of England:** [Manchester EPC](https://www.hollenplus.com/commercial-epc-manchester), [Manchester BREEAM](https://www.hollenplus.com/breeam-assessment-manchester), [Liverpool](https://www.hollenplus.com/commercial-epc-liverpool), [Leeds](https://www.hollenplus.com/commercial-epc-leeds), [Sheffield](https://www.hollenplus.com/commercial-epc-sheffield), [Newcastle](https://www.hollenplus.com/breeam-assessment-newcastle). - **South West & Wales:** [Bristol EPC](https://www.hollenplus.com/commercial-epc-bristol), [Bristol BREEAM](https://www.hollenplus.com/breeam-assessment-bristol), [Bournemouth](https://www.hollenplus.com/commercial-epc-bournemouth), [Swindon](https://www.hollenplus.com/breeam-assessment-swindon), [Cardiff](https://www.hollenplus.com/breeam-assessment-cardiff). - **Scotland:** [Dunfermline](https://www.hollenplus.com/commercial-epc-dunfermline).