Turn a one-paragraph brief into a lifecycle sustainability ledger.

Describe the project the way you would to a client over coffee. This engine estimates embodied carbon, operational energy, and renewable capacity, then scores the project against LEED, Green Mark and GBI — with a clear roadmap of upgrades if it falls short.

01 — Project Brief

Ready. Describe a project above and analyze it.

Import a filled professional scorecard

Real credit-level data from your team overrides the AI estimate below.

Upload .xlsx

Need the blank template?

Complete LEED / GBI / Green Mark credit-level workbook, ready to assign to your team.

Confirm Project Parameters

Building Type

Tier / Star Rating (drives cost)

Construction System (drives embodied carbon & cost)

Units / Keys

Site Area (hectares)

Footprint (% of site)

Climate

Country / Market (sets certifications & currency)

Display Currency

Site Context

GFA Override (m² — optional, leave 0 to auto-estimate)

▸ Building Details — professional input Optional. Override the app's geometry estimates with real figures from your drawings. Leave blank to keep the derived values.

Everything above is estimated from site area, footprint % and unit count. If you have drawings, enter the real numbers here — they replace the derived geometry everywhere in the app (credit areas, façade costs, embodied carbon, energy).

Massing

Number of floors (above ground)

GFA per floor (m²)

Floor-to-floor height (m)

Façade area by solar exposure In the tropics, east and west façades take the harshest low-angle sun — they drive cooling load and shading cost.

East-facing wall area (m²)

West-facing wall area (m²)

North-facing wall area (m²)

South-facing wall area (m²)

Shaded / self-shaded wall area (m²) (excluded from solar gain)

Window-to-wall ratio (%)

Envelope performance

Shading device efficiency (%) (% of direct solar gain blocked)

Glazing heat-gain rejection (%) (1 − SHGC, as a %)

These inputs feed a simplified solar-gain model: exposed sun-facing glazing area × (1 − shading efficiency) × (1 − glazing rejection). It is a design-stage sanity check, not an ETTV/OTTV calculation or an energy model — those require BCA/BEIT-approved software and a qualified engineer.

EcoAudit — Sustainability Assessment

02 — Sustainability Vision

Analyzing regional benchmark potential…

Embodied Carbon — Elemental Build-Up

Quantity × carbon factor, element by element, to A1–A3 cradle-to-gate (EN 15804) — not a single assumed intensity. Quantities are derived from your geometry and construction system; factors are indicative industry means. Both are editable — a sustainability manager or QS should replace them with project take-off quantities and supplier EPD factors.

Certification Trajectory

How These Scores Are Built

Real published category structures — for transparency with your client's team. Only categories this tool models are scored; the rest need a full certification review.

Lifecycle Ledger

Toggle strategies within each stage — the dashboard recalculates live.

Complete Certification Scorecard

Every real published credit, selectable. Check the ones your team is pursuing — the gauges above switch to these real totals the moment you start.

Minimum requirements to score at all: LEED — every prerequisite (greyed rows below) must be confirmed met, independent of points, or no certification is possible regardless of score; minimum 40 pts for Certified. GBI — EE1 (Minimum EE Performance) is now mandatory for all submissions registered after 30 Jun 2014: OTTV ≤ 50, RTTV ≤ 25, Roof U-Value ≤ 0.4/0.6 per MS 1525. Then 50 pts minimum for Certified. Green Mark 2021 — Energy Efficiency (saving vs the 2005 code baseline) is the sole mandatory gateway: GoldPLUS >50%, Platinum ≥55%, Super Low Energy ≥60%. No sustainability point counts until this gate is passed. The five sustainability sections are each capped at 15 pts (75 total), with a section Badge at ≥10/15.

Optimization Roadmap

Pillar	Upgrade Strategy	Why the Client Will Love It	Score Impact	Est. Cost

Financial Model

Energy & Water Outlook — Year 1 to Year 10

Cumulative energy generated, water saved, and carbon avoided from the current project's renewable and water strategies — through the window before typical inverter replacement (~10–15 years). Uses the same project and lever selections as the main assessment.

Electricity Tariff (S$/kWh)

Water Tariff, all-in (S$/m³)

PV Degradation (%/year)

Grid Emission Factor (kgCO2e/kWh)

Defaults reflect current Singapore market rates (SP Group electricity tariff, PUB water tariff incl. conservation tax, NREL median PV degradation). Edit for other markets — this recalculates live.

Assumes flat tariffs and no system replacement within the 10-year window (typical inverter lifespan is 10–15 years — budget for replacement separately beyond Year 10). Water savings assume constant fixture performance with no degradation curve modelled. Figures are planning estimates, not a bankable financial model.

Editable Placeholders

Cost Assumptions

Every cost figure this app currently uses to calculate "Estimated Incremental Construction Cost" — shown as the actual AI placeholder value, not just the formula. Override any of them directly here, or import a filled "Cost Data" sheet from the Excel template — either way, your number replaces the placeholder everywhere in the app immediately.

Baseline Construction Cost (by tier)

Solar PV Capital Cost

Per-Strategy Cost (S$/m² GFA)

Every lever's cost assumption — override any individual one without affecting the rest.

Grounded in Your Live Data

Ask AI About This Project

Every answer is generated with your current project's actual numbers — scores, costs, GFA, selected strategies — passed to the model as context. Not general sustainability advice; analysis of what's actually on screen.

Uses the AI Engine selected above (⚙ AI Engine button, top right). Chat history is not saved — export or screenshot anything you want to keep.