Aligned with EU EPBD Directive

The Digital Persona for Every Building

NexusDBL is a comprehensive Digital Building Logbook platform that unifies 3D visualization, BIM, IoT sensors, energy performance, compliance, and Digital Twin technology — for the entire lifecycle of your building portfolio.

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15+
Integrated Modules
100%
Web-based
EPBD
Compliant
NexusDBL Dashboard
Built for compliance: EU EPBD Smart Readiness Indicator GDPR ISO 19650 (BIM) Multi-tenant SaaS
Core Capabilities

Everything a Building Needs, in One Place

From a single building to a city-scale portfolio — NexusDBL gives owners, operators, regulators, and auditors a unified workspace covering every aspect of building lifecycle management.

Building Registry

Centralized portfolio management with rich metadata, geospatial coordinates, ownership, and lifecycle history. Search, filter, and bulk-import via CSV.

3D Globe Visualization

Interactive CesiumJS globe with OSM building context, color-coding by typology or energy class, EUI heatmaps, and spatial query tools.

BIM / IFC Viewer

Upload and view IFC building models directly in the browser via web-ifc — no plugins. Navigate spatial trees, inspect element properties, toggle visibility.

Digital Twin

Combine BIM models with live sensor data. Color-code IFC elements by temperature, humidity, or CO₂ readings. Real-time and historical playback.

IoT Sensor Management

Connect 8 sensor types (temperature, humidity, CO₂, energy meters, occupancy, light, pressure, water flow) via MQTT, REST, or Modbus. Live dashboards with threshold alerts.

Energy Performance

Track consumption by carrier with automatic EUI (kWh/m²/year) and CO₂ calculations. Benchmark against national averages and peer groups.

Compliance Monitoring

Automated compliance status based on EPC validity and current-year energy data. Certificate expiry alerts at 90/60/30 days.

Document Management

Upload EPCs, floor plans, permits, inspection reports. Versioning, expiry tracking, secure presigned downloads, full audit trail.

Renovation & Maintenance

Renovation timeline with cost/EUI tracking. Maintenance task scheduling with priorities and recurrence. Full work order lifecycle.

AI Analytics

Statistical anomaly detection on sensor and energy data. Predictive maintenance recommendations. Energy consumption forecasting with confidence intervals.

SRI Assessment

9-domain Smart Readiness Indicator following EU methodology. Interactive scoring, A–E classification, radar chart visualization, assessment history.

Materials Passport

Track every material in your buildings — category, health score, recyclability, hazard flags. Generate inventory reports for circular-economy compliance.

Collaboration

Share buildings with granular permission levels (read/write/admin). Threaded discussions per building. Per-building and tenant-wide activity feeds.

Custom Dashboards

Drag-and-drop dashboard builder with 9 widget types. Save personal layouts, set defaults, render with live API data — your view, your way.

Enterprise Admin

Multi-tenant SaaS with schema isolation. 8 roles, 18 fine-grained permissions, full audit log, GDPR data export/deletion, webhook integrations.

Command Centre

A 3D globe for your entire building portfolio

The NexusDBL dashboard combines a live CesiumJS 3D globe with portfolio KPIs, recent activity, and customizable widgets — so you see everything that matters at a glance.

OpenStreetMap & ESRI basemaps

Free, no-API-key basemaps with Cesium World Terrain for accurate elevations.

EUI heatmap overlay

Color buildings green → red by energy intensity to spot poorly performing assets.

Spatial query tools

Draw a rectangle to select all buildings within an area for batch operations.

OSM 3D context buildings

Import OpenStreetMap building footprints as extruded 3D blocks for instant city context.

3D Globe with buildings
Energy performance tracking
Energy & Compliance

Track energy. Prove compliance. Plan renovations.

Capture energy consumption per carrier, calculate EUI and CO₂ automatically, benchmark against national averages, and run what-if renovation scenarios before committing budget.

EUI & CO₂ calculation

Automatic per-carrier conversion using configurable EU-default emission factors.

Benchmarking

Compare against national averages and peer-group typologies with percentile ranking.

What-if scenarios

Toggle 5 renovation measures (insulation, windows, LED, solar, heat pump) and see projected savings instantly.

EPC tracking

Automatic expiry monitoring at 90/60/30 days with email and in-app notifications.

BIM in the Browser

Open IFC files instantly — no plugins, no conversion

Upload an .ifc file and view it immediately in your browser. NexusDBL parses geometry, spatial structure, and property sets entirely client-side using WebAssembly.

Click-to-inspect

Select any element to see its name, GlobalId, IFC type, and full property set hierarchy.

Spatial tree

Navigate Project → Site → Building → Storey → Elements with collapsible groups.

Visibility toggles

Hide entire groups (walls, doors, windows) or individual elements for clear inspection.

Link to inventory

Connect IFC elements to materials and maintenance tasks for full traceability.

BIM IFC Viewer
Digital Twin visualization
Digital Twin

BIM meets IoT — live, in 3D

Link IoT sensors to specific IFC elements. Watch temperature, humidity, and CO₂ readings color-code the 3D model in real time. Scrub back through history to investigate incidents.

Live element coloring

Temperature gradient (blue → red), humidity, CO₂ — choose what to visualize.

Time slider

Play/pause through the last 24 hours of sensor data to replay incidents and patterns.

Sensor-element linking

Map physical sensors to BIM rooms / equipment with installed_in, monitors, controls relationships.

Real-time polling

10-second snapshot refresh keeps the view in sync with live sensor feeds.

Smart Buildings

From sensors to insights, in one platform

Register sensor devices, ingest readings via REST or MQTT, configure alert thresholds, and monitor everything from a unified dashboard. Built-in simulator generates synthetic data so you can test before hardware is installed.

8 sensor types

Temperature, humidity, CO₂, energy meters, occupancy, light, pressure, water flow.

Threshold alerts

Configurable min/max per sensor with automatic alert generation and acknowledge workflows.

Data simulator

Generate sine, random, step, or drift patterns — batch or live — to validate dashboards.

Sparkline cards

Each sensor shows live values, online/offline status, and 24h trend at a glance.

IoT Sensor monitoring
Compliance overview and analytics
Analytics & AI

Surface what matters. Predict what's next.

Built-in statistical analytics detect anomalies in sensor and energy data, predict equipment failures from drift patterns, and forecast energy consumption with confidence intervals.

Anomaly detection

Z-score statistical method flags readings that fall outside normal patterns.

Predictive maintenance

Rule-based predictions for HVAC drift, efficiency loss, sensor calibration, overdue tasks.

Energy forecasting

Linear regression with seasonal adjustment and confidence bands for 6+ month forecasts.

Building health score

Single 0–100 score summarizing the operational health of every building in your portfolio.

Platform Tour

Every workflow, polished

Designed for daily use by building managers, energy auditors, regulators, and IT administrators.

Dashboard

Portfolio Dashboard

3D globe, KPIs, recent activity, custom widgets

3D globe

3D Building Visualization

Color-coded by typology, energy class, or EUI heatmap

Building profile

Building Profile

14 tabbed sections from Overview to History

Energy records

Energy Records

Carrier-by-carrier consumption tracking with EUI/CO₂

BIM viewer

BIM / IFC Viewer

Browser-native, no plugins, full property inspection

Digital Twin

Digital Twin Viewer

Live sensor data colors the 3D model

IoT monitoring

IoT Sensor Dashboard

Live values, sparklines, status indicators

Compliance

Compliance Overview

Automated checks, issue tracking, CSV export

And much more...

Renovation, materials, SRI, work orders, audit logs, webhooks, scheduled reports

Built for Teams

Granular roles for every stakeholder

8 built-in roles with 18 fine-grained permissions ensure every user sees exactly what they need — nothing more, nothing less.

System Admin

Full platform access

Tenant Admin

Manage their organization

Building Owner

Manage owned buildings

Facility Manager

Operations & maintenance

Energy Auditor

Energy & SRI assessments

Tenant Occupant

Read-only access

Regulator

Compliance & audit logs

API Consumer

Programmatic integrations

Use Cases

One platform, many missions

Whether you manage a city, a single building, or a thousand-asset portfolio, NexusDBL adapts to your workflow.

Municipalities & Cities

Inventory every public building, track energy performance at city scale, enforce EPBD compliance, plan renovation programs, and report progress to citizens and regulators.

Public Buildings Renovation Wave EU Reporting

Real Estate Portfolios

Centralize documents, monitor performance across hundreds of buildings, identify underperformers, model renovation ROI, and demonstrate ESG progress to investors.

ESG Reporting Asset Management Due Diligence

Facility Managers

Schedule maintenance, manage work orders end-to-end, monitor sensor alerts in real time, and keep a complete history of every action for accountability.

Maintenance Work Orders IoT Alerts

Energy Auditors

Conduct site visits with mobile-ready forms, capture SRI assessments, model what-if renovation scenarios, and deliver reports with measurable ROI projections.

SRI Assessment Audits EPC

Regulators & Authorities

Read-only access to compliance data across the jurisdiction, anomaly detection on suspicious filings, full audit trail for every change, GDPR-compliant data subject rights.

Audit Trail GDPR Compliance

Sustainability Consultants

Build credible decarbonization roadmaps backed by real data, benchmark against peer groups, track materials passports for circular economy claims, and report on outcomes.

Decarbonization Circular Economy Materials Passport
Impact

What you get with NexusDBL

A unified workspace replaces five disconnected tools — and unlocks insights you couldn't see before.

5→1
Tools Consolidated
Replace spreadsheets, file shares, BIM viewers, IoT dashboards, and reporting tools
90%
Less Manual Work
Automated EUI/CO₂ calculation, compliance checks, certificate alerts
100%
Audit-Ready
Every action logged. Every change traceable. Every download authenticated
24/7
Real-Time Visibility
Live sensor data, automatic alerts, threshold monitoring across the portfolio
Standards & Compliance

Built around the regulations that matter

NexusDBL is designed from the ground up to align with European building performance and data protection requirements.

EU EPBD Directive

Supports the Energy Performance of Buildings Directive recast — building logbooks, smart readiness, MEPS tracking, and renovation passports.

Smart Readiness Indicator

Full 9-domain SRI methodology implementation with functionality-level scoring and A–E rating output as defined by EU Reg. 2020/2155.

ISO 19650 (BIM)

IFC 2x3 / IFC4 support for BIM model exchange. Open standard, vendor-neutral, future-proof.

GDPR Compliant

Built-in data export, right to erasure, audit logging, consent tracking, and tenant data isolation through schema-per-tenant architecture.

Circular Economy

Materials passports with health and recyclability scores aligned with the EU Construction Products Regulation revision.

Enterprise Security

JWT with RBAC, HMAC-signed webhooks, security headers (CSP, HSTS), rate limiting, password complexity enforcement.

Technology

Modern, open, and built to last

Open web standards. No proprietary lock-in. Self-hostable on your infrastructure or run as SaaS.

.NET 8
PostgreSQL + PostGIS
CesiumJS
Three.js + web-ifc
Chart.js
MinIO (S3)
Redis
Docker Compose
JWT + RBAC
REST API
Webhooks (HMAC)
Hangfire Jobs
Deployment

Run it your way

Cloud-hosted SaaS, on-premise behind your firewall, or hybrid — your data, your choice.

Cloud SaaS

Fully managed by INS. Automatic updates, daily backups, 99.9% uptime SLA, GDPR-compliant European hosting.

On-Premise

Single Docker Compose command deploys the entire stack on your infrastructure. Full source code, no licensing per seat.

Hybrid

Cloud-managed UI with on-premise data residency. Best of both worlds for regulated industries and government clients.

See NexusDBL in action

Book a personalized demo and discover how NexusDBL can centralize, simplify, and futureproof the management of your building portfolio.

Request Demo Contact Sales