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Architecture
Architecture

Design and masterplanning, performance-led from the first sketch to handover.

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Services
Feasibility & masterplanning Set the energy target before a line is drawn Planning & detailed design Buildable detail through every RIBA & RIAI stage ZEB, NZEB & Passivhaus design Classic, Plus and Premium, modelled from day one Deep retrofit Pathfinder, heritage & social housing retrofit Passivhaus at scale From 550 homes to a 5,500-home new town
Sectors
Residential & social housing Student accommodation Build-to-rent Commercial & mixed-use Education & civic
Senan House Featured project Senan House Ireland’s first certified Passivhaus office, designed by Mosart.
Consulting
Consulting

The building physics that makes performance real, certified independently at scale.

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Passivhaus
Feasibility studies Can the design make the standard, and how Passivhaus designer Us, on your team as Passive House designer Passivhaus certifier Independent certification by 7 PHI-accredited certifiers PHPP energy modelling The energy model, live from feasibility Thermal bridge analysis 2D and 3D psi-values to ISO 10211 Airtightness strategy Designed and tested to 0.6 ACH EnerPHit retrofit The standard for existing buildings
Sustainability & energy
Dynamic simulation Overheating to CIBSE TM59 & Part O Daylight & sunlight EN 17037 and daylight factor Hygrothermal & moisture WUFI condensation and mould risk Embodied & whole-life carbon Whole-life carbon to EN 15978 Portfolio decarbonisation Stock-wide retrofit pathways
Why Passivhaus
The business case Cost, returns and the regulation runway
By region
Ireland Our home market, moving fast England The Future Homes Standard and Part L London Passivhaus for the London Plan Scotland New Build Heat Standard and beyond United States Massachusetts and Passive House
Learning
Learning

Trained 4,500 professionals, taught by the people who build to the standard daily.

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Courses
Certified Passivhaus Designer The international qualification, €1,795 on demand Certified Passivhaus Tradesperson For site teams, in person, online or in-house CPD training Bespoke CPD for your practice or team ZEB Summit The conference we founded and run All courses
Free, on this site
Building science benchmark Towerhaus
Certified Passivhaus Designer Most popular Certified Passivhaus Designer €1,795 · on demand · the credential you earn.
Pulse
Pulse

Post-occupancy monitoring. The kept promise, measured in the building people live in.

Pulse overview →
Post-occupancy
In-use energy & comfort Temperature, CO₂, humidity and energy, live Performance evaluation Designed versus measured, every dwelling Evidence for the next build What the data feeds back into design
Live now Hundreds of homes under measurement From single homes to full schemes, monitored in use today.
ToolsProjectsInsights
About
About

Passivhaus architects, consultants and certifiers since 1993.

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The practice
About Mosart Who we are and the people behind the work How we work Feasibility to in-use, stage by stage Careers Open roles in Co. Wicklow Contact Start a project or book a call
The numbers 30+ years, 7 certifiers 4,500 professionals trained, 4M ft² certified across Ireland, the UK and beyond.
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Architecture
Services
Feasibility & masterplanningPlanning & detailed designZEB, NZEB & Passivhaus designDeep retrofitPassivhaus at scale
Sectors
Residential & social housingStudent accommodationBuild-to-rentCommercial & mixed-useEducation & civic
Consulting
Passivhaus
Feasibility studiesPassivhaus designerPassivhaus certifierPHPP energy modellingThermal bridge analysisAirtightness strategyEnerPHit retrofit
Sustainability & energy
Dynamic simulationDaylight & sunlightHygrothermal & moistureEmbodied & whole-life carbonPortfolio decarbonisation
Why Passivhaus
The business case
By region
IrelandEnglandLondonScotlandUnited States
Learning
Courses
Certified Passivhaus DesignerCertified Passivhaus TradespersonCPD trainingZEB SummitAll courses
Free, on this site
Building science benchmarkTowerhaus
Pulse
Post-occupancy
In-use energy & comfortPerformance evaluationEvidence for the next build
About
The practice
About MosartHow we workCareersContact
ToolsProjectsInsights
Start a project →
Legal

ISO 9001 Policy

Mosart wants to be recognised by the market for delivering an excellent service in architecture, sustainability and education relating to high performance, comfortable and healthy buildings in residential, commercial and public sectors.

We are committed to:

  • Providing a service that meets and exceeds our clients' needs and expectations through developing innovative methods and engaging experienced and talented staff.
  • Respecting the environment by identifying environmental aspects and minimising impacts of our services, notably those related to pollution and climate change.
  • Providing a healthy and safe work experience to our staff, consultants, subcontractors and visitors.
  • Conducting employee consultation regarding health, safety and welfare matters and ensuring arrangements are in place to make it effective.
  • Setting objectives for continual improvement and providing resources for their achievement, to maximise our strengths, minimise risk and enhance our performance.
  • Working alongside our consultants, suppliers, service providers and partners to develop long-lasting relationships and ensure a high standard of service delivery whilst ensuring the respect for the environment and defined quality requirements.
  • Continually improving our performance and the Integrated Management System (IMS), to ensure our business remains profitable, reputable and is in a position to take advantage of commercial opportunities.
  • Complying with all applicable requirements, including those of the ISO 9001 standard, contracts, and others to which Mosart subscribes.
  • Engaging Mosart staff to identify opportunities for improvement of the Integrated Management System (IMS).
  • Ensuring that the integrity of the IMS is maintained when changes are planned or implemented.

Our Integrated Management System is consistent with the purpose and requirements of ISO 9001:2015 as a means of systematically satisfying the needs and expectations of all interested parties, securing the quality of the services provided and customer satisfaction, whilst respecting the environment and providing a healthy and safe environment to those that work with us.

This Policy statement is clearly communicated by the Top Management and arrangements are put in place to make sure that it is understood by all staff within the Company. It shall be made available to the interested parties upon request and is subject to, as a minimum, annual review to ensure its continued suitability.

Tomas O’Leary
Managing Director, Mosart

May 2024 | IMS Policy Rev.04 | 04/05/2024

Contact

Mosart Group
Wicklow County Campus, Clermont House, Rathnew, Co. Wicklow, A67 X566
Email: info@mosartgroup.com
Phone: (0404) 25777

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mosart

Passivhaus architecture, consulting and education. Passivhaus experts with a global portfolio.

Redefining Building Performance.

Quality management to ISO 9001:2015 · PHI-accredited certifiers

Practice

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© 2026 Mosart, Redefining Building Performance.Wicklow County Campus, Clermont House, Rathnew, Co. WicklowPrivacy PolicyTermsISO 9001

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