Extended Resources Inventory
An Extended Resources Inventory (ERI) is the top level of BREEAM In-Use RSC03: a resources inventory that treats your building as a material bank, adding current financial value, maintenance to preserve it, and strategies to maximise returns through reuse and recycling.
Book an Audit: audits@material-index.co.uk
What is an Extended Resources Inventory?.
BREEAM In-Use RSC03 (opens in new tab) (Resources Inventory) treats a building as a material bank, and it comes at two levels. A Simple Resources Inventory records the functional classification, constituent materials, location and estimated quantity of significant resources, earning two credits. An Extended Resources Inventory builds on that to earn the full four credits (opens in new tab).
The ERI adds the current financial value of those resources, planned maintenance to preserve that value, and strategies for maximising financial income or avoiding costs through reuse or recycling. BREEAM expects it to be completed by someone with expertise in circular economy principles, and confirms a detailed deconstruction plan is not required.
Why you need an ERI?.
The value of RSC03 isn't just the credits, it's treating your building as a material bank. The extended level unlocks the full four credits and, more importantly, a clear view of the financial value locked up in your materials and how to preserve and recover it, alongside the lifecycle benefits of proactive maintenance.
Because it identifies markets and strategies for reuse and recycling, it connects directly to recovery: the same data lists materials on the Material Index marketplace when they reach end of life, turning a compliance exercise into avoided costs and recovered income.
Material Index Audits.
We carry out Extended Resources Inventories with in-house circular economy expertise, through the same platform we use for our audits. Our auditors catalogue significant resources on site, capturing functional classification, material composition, location and quantity, then add current financial value, maintenance guidance to preserve it, and reuse and recycling strategies to maximise returns.
The result delivers the full four credits under BREEAM In-Use RSC03, and the same dataset plugs into the Material Index marketplace and supports Material Passports for any material you carry forward.
01
Cataloguing at site
Significant resources catalogued with functional classification, materials, location and quantity.
02
Financial value
Current financial value assessed for the significant resources in the building.
03
Maintenance guidance
Planned maintenance set out to preserve the value of those resources over time.
04
Reuse & recycling strategy
Strategies to maximise financial income or avoid costs through reuse and recycling.
05
Listed for reuse
The same data lists materials on the marketplace or carries forward into Material Passports.
Our ERI Deliverables.
Resources inventory
Functional classification, materials, location and quantity of significant resources
Financial value & maintenance
Current financial value of resources with planned maintenance to preserve it
Reuse & recycling strategy
Strategies to maximise financial income or avoid costs through reuse or recycling
Marketplace & passport ready
A dataset that plugs into the Material Index marketplace and supports Material Passports
ERI Compliance.
Standards & policy
BREEAM In-Use RSC03 (Resources Inventory), extended level, four credits
BIU International Commercial and Residential V6
Current financial value of significant resources
Planned maintenance to preserve material value
Strategies to maximise returns through reuse and recycling
Completed by a circular economy expert; no deconstruction plan required
Ideal for
In-use commercial and residential buildings targeting BREEAM In-Use RSC03
Asset owners quantifying the financial value locked up in their materials
Portfolio managers treating their buildings as material banks
Projects recovering value and income through reuse and recycling
Areas we cover.
Extended Resources Inventory across the UK, with local expertise in the Greater London boroughs and every region.
Greater London Authority
UK-wide
Case Studies.
See how our audit and exchange services have delivered measurable results on real UK construction projects.
PDAPre-demolition Audit
1 Appold Street
British Land
Thorough Pre-demolition Audit and detailed asset register for a Broadgate Estate strip-out ahead of redevelopment.
MRAMaterial Reclamation Audit
Workplace Futures Group Office
Workplace Futures Group
Material Reclamation Audit used by designers to identify what can be reused in Workplace Futures Group's new office.
PRDAPre-redevelopment Audit
125 Shaftesbury Avenue
EDGE
Pre-redevelopment Audit for a GLA Circular Economy Statement, retention feasibility and planning approval in 2025.
FAQs.
What is the difference between a Simple and Extended Resources Inventory?
A Simple Resources Inventory records functional classification, constituent materials, location and estimated quantity, and earns two credits under RSC03. An Extended Resources Inventory adds current financial value, planned maintenance to preserve it, and reuse and recycling strategies, earning the full four credits.
Who can carry out an ERI?
BREEAM expects an Extended Resources Inventory to be completed by someone with expertise in circular economy principles. Material Index carries them out with in-house circular economy expertise.
How does RSC03 relate to RSC01?
RSC01 is a condition survey of the building's main elements (up to seven credits); RSC03 is the resources inventory (up to four credits). They are complementary BREEAM In-Use credits, and an Extended Resources Inventory is the top level of RSC03.
Do I need a detailed deconstruction plan?
No. BREEAM confirms a detailed deconstruction plan is not expected. The ERI is guidance robust enough to inform decision-making on preserving value and maximising returns.
Other Audit Services.
PDA
Pre-demolition Audit
Before you build or demolish
MRA
Material Reclamation Audit
Maximise recovery, minimise waste
PRDA
Pre-redevelopment Audit
Retention before demolition
PRA
Pre-refurbishment Audit
Before you strip out or refurbish
MP
Material Passports
Digital material identity
CE
CE Services
Advisory and brokerage
Audit Enquiry.
Tell us about your project and our team will be in touch.