From retrofit strategy to
compliant delivery.
Arche supports housing providers, local authorities, contractors, installers and property owners with practical PAS 2035 coordination, retrofit design and delivery assurance.
Partners across retrofit delivery.
We work alongside the organisations responsible for planning, funding and delivering retrofit at scale.
Housing providers and local authorities
Programme strategy, stock analysis and PAS 2035 coordination for social housing and public retrofit programmes.
Contractors and programme delivery partners
Design, coordination and compliance support that helps delivery teams meet the standard on site.
Retrofit installers
Pre-start reviews, technical query support and evidence guidance through installation.
Developers and property owners
Whole-house design and coordination for private schemes and individual properties.
Homeowners are supported too, alongside our core work with programme and delivery partners.
Six disciplines, one accountable team.
From risk-informed assessment to compliant hand-over, every stage of your retrofit is coordinated by specialists who have read the standard and been on site.
Retrofit Coordination
Risk pathway, improvement planning and end-to-end oversight that keep PAS 2035 projects aligned from design to lodgement.
Learn moreRetrofit Assessments
Whole-dwelling assessment and energy performance reporting that ground design decisions in accurate property data.
Learn moreRetrofit Design
Fabric-first design and technical detailing developed around how the work is actually installed on site.
Learn moreLow-Carbon Technical Design
Heat pump and solar PV system design, sized to the upgraded fabric and integrated with the wider retrofit strategy.
Learn moreCompliance and Installer Support
Pre-start reviews, evidence schedules and site inspections that support installers and keep delivery compliant.
Learn moreStock Strategy and Programme Planning
Stock-data review, archetyping and phased delivery planning that turn a portfolio into a fundable, deliverable programme.
Learn moreA clear path from survey to sign-off.
Every Arche project follows the same structured route, so responsibilities and evidence requirements are clear from the outset.
Understand
Establish the project objectives, stock profile, delivery constraints and required outcomes.
Assess
Gather the property, condition, occupancy, ventilation and energy information needed to make informed decisions.
Plan and design
Develop the improvement pathway, specifications and technical information required for delivery.
Coordinate delivery
Manage technical interfaces, evidence requirements, queries and design changes throughout installation.
Evaluate and assure
Review outcomes, resolve outstanding information and support compliant completion and lodgement.
Evidence-led delivery, by the numbers.
Trusted by the people delivering retrofit.
Arche turned a tangle of measures into a programme we could actually deliver. The evidence was ready before the auditor even asked.
Finally a coordinator who understands installation. Their designs were buildable on the first pass — no costly reworks on site.
As a landlord I just wanted clarity. Arche explained every decision in plain terms and kept the whole project compliant and on track.
Ready when you are
Let's make your retrofit buildable, deliverable and assured.
Tell us about your home, portfolio or programme. We'll come back with a clear, risk-informed view of what comes next.