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What’s New

Recent changes to The Circular Built Environment.

2026-06-25

What’s New

  • New article: Design for Maintenance and Repair — making building components accessible, serviceable, and replaceable in place so parts get repaired and upgraded instead of triggering a premature strip-out.
  • New article: Reuse Insurability and Warranty Pathway — how a tested, documented reclaimed component earns a defensible warranty and gets accepted by the insurers who price the next project’s risk.
  • New article: Biogenic Carbon Accounting — how the carbon stored in timber and bio-based buildings is counted, and why two competent assessors can reach different footprints for the same timber building.
  • Improved: Disassembly Potential Measurement — tighter caveats on early-design uncertainty.
  • Structural: The Foundations, Material Passports, and Urban Mining section landing pages now list every entry in the section, so readers entering a section cold get a complete map.

Metrics

  • Total articles: 74
  • Coverage: 74 of 75 proposed concepts written (99%)
  • Articles edited since last checkpoint: 3

2026-06-20

What’s New

  • New article: Disassembly Potential Measurement — how to score whether designed-for-disassembly components can actually come apart without value loss.
  • New article: Component Reuse Potential Assessment — how to grade audited building components before inventory turns into unsupported reuse claims or low-value recovery.
  • New article: Reused Precast Concrete Elements — how to recover precast slabs, beams, columns, and panels as components before crushing collapses them into aggregate.
  • Improved: Circular Fit-Out — tighter opening and clearer retention, procurement, and strip-out language.
  • Improved: EU Circular Economy Act (2026) — sharper timing language, current Commission circularity-rate framing, and a stronger source trail for the April 2026 consultation stage.

Metrics

  • Total articles: 71
  • Coverage: 71 of 72 proposed concepts written (99%)
  • Articles edited since last checkpoint: 2

2026-06-20

What’s New

  • New article: EU Circular Economy Act (2026) — the forthcoming EU policy file that could shape secondary-material markets, circular procurement, product evidence, and construction circularity infrastructure.
  • New article: Circular Fit-Out — how to keep short-life interiors useful across tenant, workplace, and retail refresh cycles.
  • Improved: Product Circularity Data Sheet (PCDS) — clearer distinctions from DPPs and material passports, with source-aligned language about how PCDS data feeds both.

Metrics

  • Total articles: 68
  • Coverage: 68 of 69 proposed concepts written (99%)
  • Articles edited since last checkpoint: 1

2026-06-18

What’s New

Metrics

  • Total articles: 66
  • Coverage: 66 of 66 proposed concepts written (100%)
  • Articles edited since last checkpoint: 3

2026-06-16

What’s New

Metrics

  • Total articles: 63
  • Coverage: 63 of 65 proposed concepts written (97%)
  • Articles edited since last checkpoint: 4

2026-06-15

What’s New

Metrics

  • Total articles: 61
  • Coverage: 61 of 63 proposed concepts written (97%)
  • Articles edited since last checkpoint: 6

2026-06-14

What’s New

  • New article: Building Circularity Metrics — how to read circularity scores without mistaking a single index for proof of low carbon, future reuse, or full circular performance.
  • New article: Digital Building Logbook (DBL) — how governed building-data records connect passports, energy evidence, renovation history, access rights, and recovery planning across the asset life cycle.
  • New article: Material Stock Analysis (MSA) — how cities, owners, and reuse operators estimate embedded building materials before recovery work reaches the demolition gate.
  • New article: Circular Procurement for Buildings — how to turn reuse, recovery, lifecycle cost, supplier engagement, and product evidence into brief, tender, budget, and contract requirements.
  • New article: Circular Construction Hub — how regional reuse hubs connect audits, storage, digital listings, logistics, buyer demand, and finance.

Metrics

  • Total articles: 58
  • Coverage: 58 of 62 proposed concepts written (94%)
  • Articles edited since last checkpoint: 0

2026-06-09

What’s New

Metrics

  • Total articles: 53
  • Coverage: 53 of 53 proposed concepts written (100%)
  • Articles edited since last checkpoint: 4

2026-06-07

What’s New

Metrics

  • Total articles: 50
  • Coverage: 50 of 53 proposed concepts written (94%)
  • Articles edited since last checkpoint: 9

2026-05-27

What’s New

  • Improved: Butterfly Diagram (Technical and Biological Cycles) — a cleaner vocabulary structure that separates technical and biological circular routes, clarifies common category errors, and gives building teams a sharper route test for circular claims.
  • Improved: R-Strategies (R0–R9 / 9R Framework) — a cleaner vocabulary structure that separates avoided demand, value-retention loops, and residual recovery so circular project claims can be ranked more precisely.
  • Improved: Linear Construction (the “Take-Make-Demolish” Baseline) — a cleaner vocabulary structure that names the take-make-demolish baseline, shows how to recognize it in briefs and contracts, and separates waste diversion from higher-value circular routes.
  • Improved: Embodied Carbon (vs Operational Carbon) — a cleaner vocabulary structure that separates material-side emissions from operating emissions, clarifies life-cycle boundaries, and gives circular project teams a sharper test for carbon claims.
  • Improved: Whole-Life Carbon Assessment — a cleaner vocabulary structure that separates the assessment boundary, module language, project examples, and caveats around future scenarios and Module D.
  • Improved: Buildings as Material Banks (BAMB) — a cleaner vocabulary structure that separates stored physical, evidence, and market value from the records and recovery conditions needed to make a material-bank claim real.
  • Improved: Material Passport — a cleaner vocabulary structure that separates material identity, data layers, recovery routes, and evidence limits from project-specific reuse advice.
  • Improved: Digital Product Passport (DPP) for Construction Products — a cleaner vocabulary structure that separates product-level regulatory evidence from material passports, building resource passports, and recoverability claims.
  • Improved: Building Resource Passport (BRP) — a cleaner vocabulary structure that separates the asset-level record, data-quality signals, DGNB/Madaster evidence, and limits around valuation and recoverability.
  • Improved: Long Life, Loose Fit — a cleaner vocabulary structure that explains the phrase’s RIBA-era origin, names the design capacities behind loose fit, and separates adaptable-building recognition from project-specific advice.
  • Improved: Shearing Layers (Six S’s) — a cleaner vocabulary structure that explains the six S’s, shows how to recognize layer-aware design, and separates layer timing from project-specific advice.
  • Improved: Hempcrete and Bio-Based Wall Systems — a cleaner vocabulary structure that separates hemp-lime material identity, moisture and code evidence, carbon limits, and end-of-life routes from project-specific advice.
  • Improved: Mycelium Composites in Construction — a cleaner vocabulary structure that separates grown-material identity, product evidence, performance limits, and circularity claims from project-specific advice.
  • Improved: Cross-Laminated Timber (CLT) and Mass Timber — a cleaner vocabulary structure that separates timber product identity, reuse evidence, carbon limits, and secondary-timber routes from project-specific advice.
  • Improved: Bankability Gap (Circular Construction Finance) — a cleaner vocabulary structure that separates circular value from underwritable evidence, clarifies the five evidence gaps, and gives finance, design, and construction teams a sharper test for circular claims.
  • Improved: BREEAM Circularity Credits — a clearer vocabulary structure that separates BREEAM evidence routes, credit-family limits, and circularity overclaim risks from project-specific certification advice.
  • Improved: DGNB Circular-Building Module and Building Resource Passport — a clearer vocabulary structure that separates DGNB resource-passport evidence, circularity indices, and data-quality limits from project-specific certification advice.
  • Improved: EU Level(s) Framework — a clearer vocabulary structure that separates the EU indicator framework, circularity signals, reporting stages, and certification or finance limits from project-specific advice.
  • Improved: ISO 20887 Design for Disassembly and Adaptability — a clearer vocabulary structure that separates the standard’s disassembly and adaptability principles from project-specific design, certification, finance, or compliance advice.
  • Improved: LEED v5 Circularity Treatment — a clearer vocabulary structure that separates rating-system evidence from project-specific certification, procurement, finance, or recovery advice.
  • Improved: Pre-Demolition Audit (Mandated) — reframed as a regulatory vocabulary entry that explains the permit-stage audit requirement, how to recognize it, and where it can still fail.
  • Improved: Revised EU Construction Products Regulation (CPR) Effective 2026 — reframed as regulatory vocabulary that separates product-market evidence from project-level circularity, design, compliance, finance, and recovery decisions.

Metrics

  • Total articles: 50
  • Coverage: 50 of 53 proposed concepts written (94%)
  • Articles edited since last checkpoint: 22

2026-05-22

What’s New

  • Improved: Material-Passport Schema and Interoperability — clearer opening gate, tighter Context and Problem prose, cleaner schema requirements, and stronger language around substitutions, IFC imports, and reuse listings.
  • Improved: Greenwashed Material Claim — clearer opening gate, tighter claim-boundary language, fewer hedges, and stronger tests for recyclable, low-carbon, bio-based, regenerative, and certified product claims.
  • Improved: Hempcrete and Bio-Based Wall Systems — clearer opening gate, tighter circularity framing, cleaner evidence requirements, and sharper limits around structure, moisture, code pathways, and end-of-life claims.
  • Improved: Mycelium Composites in Construction — clearer opening gate, tighter evidence boundaries, stronger cautions around exterior and structural claims, and cleaner consequences for acoustic, thermal, moisture, fire, carbon, and end-of-life claims.
  • Improved: Cross-Laminated Timber (CLT) and Mass Timber — clearer opening gate, tighter circularity framing, cleaner recovery-route language, and sharper cautions around moisture, connection design, evidence, and secondary-timber claims.
  • Improved: Panelized Construction — clearer opening gate, tighter recovery-unit framing, cleaner interface and passport language, and sharper cautions around composite façade panels and future reuse.
  • Improved: Volumetric Modular Construction — clearer opening gate, tighter module-recovery framing, cleaner hotel and bathroom-pod examples, and sharper cautions around removability, documentation, and second-use pathways.
  • Improved: EU Level(s) Framework — clearer opening gate, tighter circularity-measurement framing, cleaner indicator language, and sharper cautions around certification, procurement, finance, and evidence boundaries.

Metrics

  • Total articles: 50
  • Coverage: 50 of 53 proposed concepts written (94%)
  • Articles edited since last checkpoint: 8

2026-05-17

What’s New

  • Improved: BIM-Linked Material Tracking — tighter Context and Problem prose, hedge-free Forces and How-It-Plays-Out scenarios, the five-step Solution sequence rewritten as scannable short-sentence stems instead of comma-spliced enumerations, and Liabilities bullets rewritten to match the Benefits-side active-verb register.
  • Improved: Building Resource Passport (BRP) — tighter Context and Problem prose (the long enumerative Problem sentence broken into a topic claim plus a four-Which stem rhythm), hedge-free Forces and How-It-Plays-Out scenarios, the six-layer Definition table cells tightened, and Liabilities bullets rewritten to match the Benefits-side active-verb register.

Metrics

  • Total articles: 50
  • Coverage: 50 of 53 proposed concepts written (94%)
  • Articles edited since last checkpoint: 2

2026-05-16

What’s New

  • Improved: Connection Hierarchy Mapping — sharper opening hook and tighter Context, Solution, and How-It-Plays-Out prose.
  • Improved: Deconstruction Contract — sharper orientation that lands the commercial-versus-design-intent thesis up front, with tighter Forces and How-It-Plays-Out prose.
  • Improved: Light-as-a-Service — a clean opening that lands the thesis (the circular move is the incentive alignment, not the LED), tighter context and problem sections, and a split provider-duty sentence for skim-readability.
  • Improved: Bankability Gap (Circular Construction Finance) — redrafted with a sharper opening that lands the thesis in one sentence and a five-point list naming what a circular case needs before it can be underwritten: measurable benefits, assignable ownership, enforceable obligations, credible markets, testable reporting.
  • Improved: Disassembly-Ready Documentation Set — sharper orientation that lands the “what survives is whatever was handed over in writing” thesis up front, a Solution rewritten around the four-part anatomy (inventory, schedule, drawings, linked records plus a stewardship rule), and tighter Context, Problem, and Forces.
  • Improved: Adaptive Reuse — sharper orientation that lands the “first big circular decision is whether to demolish at all” thesis up front, tighter Context, Problem, and Forces, a more direct Solution, and Liabilities bullets rewritten to match the Benefits-side parallelism.
  • Improved: Long Life, Loose Fit — lands its principle in the first paragraph before the Alex Gordon history, and the design-capacity examples no longer march in identical-shape rows.
  • Improved: Shearing Layers (Six S’s) — a plain-orientation paragraph that lands the layered-service-life thesis up front, tighter Context and Problem prose, hedge-free Forces and How-It-Plays-Out scenarios, and Liabilities bullets rewritten to match the Benefits-side active-verb parallelism.

Metrics

  • Total articles: 50
  • Coverage: 50 of 53 proposed concepts written (94%)
  • Articles edited since last checkpoint: 8

2026-05-15

What’s New

  • New article: DGNB Circular-Building Module and Building Resource Passport — how DGNB turns circular-building claims into certification, passport, circularity-index, and data-quality evidence.
  • Improved: Material Passport — clearer opening and tighter explanation of how passport evidence turns circular-design claims into recoverable material records.
  • Improved: Showcase-Pilot Trap — clearer opening and tighter guidance for separating useful circular demonstrations from weak precedents.
  • Improved: Performance-Contract Risk Dump — clearer opening and tighter guidance for spotting circular service contracts that move risk without pricing or control.
  • Structural: improved the Butterfly Diagram article’s related-pattern links so readers can move cleanly between material-route framing and Whole-Life Carbon Assessment.

Metrics

  • Total articles: 50
  • Coverage: 50 of 53 proposed concepts written (94%)
  • Articles edited since last checkpoint: 3

2026-05-13

What’s New

Metrics

  • Total articles: 49
  • Coverage: 49 of 53 proposed concepts written (92%)
  • Articles edited since last checkpoint: 6

2026-05-13

What’s New

Metrics

  • Total articles: 48
  • Coverage: 48 of 53 proposed concepts written (91%)
  • Articles edited since last checkpoint: 5

2026-05-13

What’s New

  • New article: Specifying Around the Reused-Steel CE-Marking Bottleneck — how to plan the evidence, testing, and acceptance route that lets reclaimed structural members enter a new steel package.
  • New article: Pre-Demolition Audit (Mandated) — how permit-stage audit requirements make owners inventory materials, products, hazards, and recovery routes before demolition or major renovation begins.
  • New article: Pre-Demolition Material Audit — how to survey a building before strip-out or demolition so reusable products, recoverable streams, evidence, and contract duties are visible before ordinary clearance destroys value.
  • New article: Adaptive-Reuse Feasibility Triage — how to test an existing building for reuse potential before the demolition or replacement path hardens.
  • New article: Disassembly-in-Theory — how to recognize circular building claims that promise future recovery without the records, contracts, access, evidence, and markets needed to make disassembly happen.
  • New article: Downcycling-as-Circularity — how to spot circular construction claims that give low-value recycling, backfilling, scrap recovery, or energy recovery the same credit as product reuse and retained function.
  • New article: Façade-as-a-Service — how to structure building envelope performance contracts so ownership, maintenance, risk, evidence, and recovery obligations are priced instead of implied.
  • New article: Greenwashed Material Claim — how to test circular, recyclable, low-carbon, bio-based, and regenerative product claims before they enter specifications or reporting.

Metrics

  • Total articles: 45
  • Coverage: 45 of 53 proposed concepts written (85%)
  • Articles edited since last checkpoint: 0

2026-05-10

What’s New

  • Improved: Introduction — now gives readers a full orientation to circular built-environment scope, exclusions, reader paths, and pattern-language framing.

Metrics

  • Total articles: 37
  • Coverage: 37 of 53 proposed concepts written (70%)
  • Articles edited since last checkpoint: 1

2026-05-09

What’s New

  • New article: Reversible Mechanical Connection — how to design joints so components can be released, inspected, and reused instead of destroyed during removal.
  • New article: Layered Construction Sequencing — how to build in layer order so future crews can remove fast-changing parts without damaging slow ones.
  • New article: Connection Hierarchy Mapping — how to classify building joints by release cycle, performance duty, and recoverable value before choosing the connection detail.
  • New article: Disassembly-Ready Documentation Set — how to hand over the schedules, inventories, release instructions, and stewardship record future crews need to recover building components intact.
  • New article: Building Resource Passport (BRP) — how asset-level resource records turn material-passport evidence into circularity, data-quality, carbon, and recovery signals owners and investors can use.
  • New article: Material-Passport Schema and Interoperability — how to structure passport fields, identifiers, evidence, data quality, and exchange mappings so circular-building data can travel between systems.
  • New article: BIM-Linked Material Tracking — how to keep material-passport data tied to model objects, quantities, locations, classifications, and as-built updates instead of a drifting spreadsheet.
  • New article: Volumetric Modular Construction — how factory-built room modules can become recoverable assets when their boundaries, interfaces, records, and relocation routes are designed from the start.
  • New article: Panelized Construction — how factory-made wall, floor, roof, and façade panels can become recoverable assemblies rather than larger pieces of mixed waste.
  • New article: Cross-Laminated Timber (CLT) and Mass Timber — how engineered timber’s circular value depends on certification, connection design, moisture history, and credible recovery routes.
  • New article: Hempcrete and Bio-Based Wall Systems — how hemp-lime walls can support circular construction when binder chemistry, moisture control, code pathway, and end-of-life separation are handled honestly.
  • New article: Mycelium Composites in Construction — how to use grown fungal bio-composites without overclaiming their structural, moisture, fire, or end-of-life performance.
  • New article: Adaptive Reuse — how to test whether an existing building can carry a new use before demolition destroys its structure, carbon stock, fabric, and recoverable material value.
  • New article: Shearing Layers (Six S’s) — how to read a building as layers that change at different speeds so fast-changing work does not destroy long-life value.
  • New article: Long Life, Loose Fit — how to design durable building layers and changeable infill so a building can keep serving new uses instead of defaulting to demolition.
  • New article: Open Building (Support and Infill) — how to separate durable shared support from changeable infill so buildings can adapt without damaging their long-life layers.
  • New article: Reused Structural Steel — how to recover beams, columns, and other members as identifiable products with the evidence needed for structural reuse rather than scrap recycling.
  • New article: Recycled Concrete Aggregate (RCA) — and Its Limits — how to recover concrete as aggregate without confusing low-grade downcycling with closed-loop circularity.
  • New article: Salvaged Building Components Marketplace — how recovered building products become specifiable, purchasable, and movable before demolition speed destroys their value.
  • New article: Deconstruction Contract — how to pay for careful dismantling, documented recovery, quality grading, and reuse routing instead of only fast clearance.
  • New article: Light-as-a-Service — how lighting performance contracts can align ownership, maintenance, data, finance, and recovery instead of merely financing an LED retrofit.
  • New article: EU Level(s) Framework — how the European Commission’s common building-assessment framework turns circularity, whole-life carbon, resource use, resilience, comfort, and life-cycle value into comparable project evidence.
  • New article: LEED v5 Circularity Treatment — how LEED v5 turns embodied carbon, reuse, product selection, product-circularity evidence, and waste diversion into certification prerequisites and credits.
  • New article: Revised EU Construction Products Regulation (CPR) Effective 2026 — how EU product-market law changes construction-product data, digital passports, sustainability evidence, and circularity claims without by itself proving building-level recoverability.
  • New article: Bankability Gap (Circular Construction Finance) — why circular construction needs finance-grade evidence before lenders, investors, and owners can credit its long-term value.
  • New article: Circular Retrofit Investment Case — how to compare retrofit with demolition and replacement using retained material value, avoided embodied carbon, operational improvement, finance eligibility, and future adaptability in one asset case.
  • New article: Performance-Contract Risk Dump — how circular service contracts fail when ownership, maintenance, finance, insurance, and recovery duties outrun the provider’s control and risk capacity.
  • New article: Showcase-Pilot Trap — how to learn from circular-construction pilots without mistaking exceptional funding, procurement freedom, or publicity value for repeatable market proof.

Metrics

  • Total articles: 37
  • Coverage: 37 of 53 proposed concepts written (70%)
  • Articles edited since last checkpoint: 0

2026-05-08

What’s New

Metrics

  • Total articles: 9
  • Coverage: 9 of 53 proposed concepts written (17%)
  • Articles edited since last checkpoint: 0