What building systems can you integrate with?

We integrate with the most common building management and IoT systems: BMS platforms (Johnson Controls, Siemens Desigo, Schneider EcoStruxure, Honeywell), HVAC controllers via BACnet, lighting systems via DALI or KNX, access control systems via REST API or manufacturer SDKs, energy meters via Modbus or M-Bus, and occupancy sensors via MQTT or Zigbee. For legacy building systems without network connectivity, we use protocol gateways or hardware data loggers. The integration scope depends on which systems are installed, what protocols they expose, and what data you need from each. We assess integration feasibility for each system during scoping.

How does smart building software reduce energy costs?

Smart building software reduces energy costs by giving building managers visibility into what is consuming energy, when, and where, which most currently lack beyond a monthly utility bill. Specific mechanisms include: identifying HVAC and lighting running in unoccupied zones outside operating hours; detecting equipment fault conditions (refrigerant leaks, HVAC running inefficiently) that show up as energy anomalies before they cause failure; enabling demand response, automatically reducing non-critical loads during peak tariff periods; and providing benchmarking across floors, buildings, or time periods so managers know which interventions had the most impact. Typical outcomes in commercial buildings are 15-30% energy reduction, though this depends on baseline efficiency and the scope of controls integration.

Can you integrate with BACnet, LON, and KNX building protocols?

Yes. BACnet (the most common protocol for HVAC and building automation controllers), LON (used in older building automation systems and some lighting controllers), and KNX (common in European commercial buildings for lighting and HVAC control) are all in scope. We use protocol gateways and integration middleware to connect these systems to modern cloud platforms or on-premise servers. We also integrate directly with Modbus for energy meters, M-Bus for utility metering, and MQTT for modern IoT sensors. The integration architecture depends on which protocols your installed systems use and what level of control (read-only monitoring vs read-write control) is required.

What does smart building software development cost?

A focused smart building management platform, integrating two to three building systems, energy monitoring dashboard, basic occupancy analytics, and a facilities management interface, typically runs $35,000-$90,000. Platforms covering multiple buildings, full tenant portal functionality, advanced energy optimization, fault detection, and integration with property management systems run higher. Cost depends on the number of systems integrated, building count, tenant-facing requirements, and the complexity of the analytics and alerting layer. We scope before pricing and deliver a fixed-cost proposal.

Smart Building Software Development

Smart building software connects HVAC, lighting, access control, energy meters, and occupancy sensors to a unified platform, and then makes the data from those systems useful for the people who manage buildings and the tenants who occupy them.
We build smart building management software that goes beyond the hardware: energy optimization dashboards, space utilization analytics, fault detection and maintenance alerting, tenant-facing portals, and the integration layer that connects building systems that were never designed to talk to each other.

Unified platform connecting HVAC, lighting, access control, and energy systems
Energy optimization and space utilization analytics built on actual building data
Tenant portal and facilities management interface in a single platform
BACnet, LON, KNX, and MQTT protocol support for existing building systems

Recent outcomes

Voice AI · Research

6× deeper insights

Text-based interviews converted to automated phone calls

AI Automation · Ops

20k+ txns day one

Manual invoice OCR across 40+ gas stations

Loyalty · Retail

1,062 users in 4 weeks

SuperValu & Centra loyalty platform with receipt validation

SaaS · Logistics

2,000+ shipments yr 1

Multi-carrier shipping hub for Indonesian eCommerce

4.9

on Clutch

See our work

The problem

Sound familiar?

Building systems, HVAC, lighting, access control, all in separate vendor portals with no unified view?
Energy costs rising with no data showing which systems, zones, or times are driving consumption?

Short answer

Smart building software connects a building's HVAC, lighting, access control, energy metering, and occupancy sensors into one management platform. Facilities teams get operational dashboards, energy monitoring, and fault detection; tenants get a self-service portal. The IEA reports advanced building controls can cut energy use by up to 40% without replacing existing equipment.

Key takeaways

Smart building software unifies HVAC, lighting, access control, energy meters, and occupancy sensors into a single management platform
BACnet, LON, KNX, Modbus, M-Bus, and MQTT protocol support enables integration with existing building systems without replacing installed equipment
Continuous energy monitoring with automated waste detection targets the largest savings first: HVAC scheduling, occupancy-based setback, and equipment fault detection
Space utilization analytics combine PIR sensors, camera-based people counters, WiFi probe data, and access control badging into one occupancy estimate per zone
A focused smart building platform covering two to three systems and core analytics typically costs $35,000–$90,000; multi-building platforms with full tenant portals run higher
Tenant portals cover comfort complaints, visitor pre-registration, meeting room booking, and service requests with row-level tenancy data isolation

Trusted by

Most buildings have smart systems, HVAC with sensors, access control with logs, energy meters with half-hourly readings, but the data lives in each vendor's portal, isolated from every other system. The facilities manager doesn't have a single view of the building. The energy manager can't correlate HVAC runtime with occupancy. The tenant can't submit a comfort complaint through a self-service interface.

Smart building software is the integration and application layer that changes this. One platform connects the systems and routes each data stream to the people who need it. On top, a live model of the building, a digital twin, lets facilities and energy teams query current state, replay history, and test setpoint changes before pushing them. That is how managers cut running costs, use space better, and catch faults before tenants notice.

According to the International Energy Agency's Energy Efficiency 2025 report, advanced automation and control systems in commercial buildings can deliver up to 40% energy savings without replacing installed equipment. For operators, most of that saving sits in HVAC scheduling, occupancy-based setback, and fault detection, the exact areas this software turns into a daily workflow.

Capabilities

What we build

01
Building management system integration
Integration with existing BMS platforms and independent controllers without replacing installed equipment, connecting at the protocol level via on-site gateways that bridge legacy fieldbus systems to the cloud. Edge processing covers buildings with data sovereignty needs or unreliable connectivity, and write-back control enables automated setpoint changes where the operator has agreed to remote control.
Built with
Siemens Desigo · Johnson Controls Metasys · BACnet · KNX · Modbus · MQTT
02
Energy monitoring and optimization
Sub-metering dashboards showing energy consumption by floor, zone, circuit, and time period, not just a building-level total. Automated waste detection flags HVAC running in unoccupied zones and anomalies against a rolling baseline before they appear on a bill, and demand response sheds non-critical loads during peak tariffs.
Built with
OpenADR · ASHRAE 90.1 · LEED/BREEAM · ISO 50001
03
Occupancy and space utilization analytics
Space utilization analytics that reconcile multiple sensor sources into one occupancy estimate per zone, because no single sensor gives the complete picture. Desk booking integration compares desks booked against desks actually occupied, giving real estate teams the utilization data behind lease renewal and desk-ratio decisions.
Built with
PIR sensors · WiFi probe data · Robin · Envoy · Condeco
04
Access control and security integration
Integration with existing access control systems to surface access events in the unified building platform without replacing installed hardware. Every door event is logged against a common timeline with energy, HVAC, and occupancy data, so a security team can correlate an energy spike with unexpected access, and combined logs produce the audit reports ISO 27001 requires.
Built with
OSDP · Lenel · Genetec · Brivo · Kisi
05
Tenant portal development
Web and mobile tenant portals where tenants submit comfort complaints and service requests through a visible workflow with push notifications at each stage. Visitor pre-registration, calendar-synced meeting room booking, and billing for services beyond the base lease round out the portal, with row-level security keeping every tenancy's data isolated.
Built with
React · Next.js · Microsoft 365 · Google Workspace · Stripe
06
Fault detection and maintenance alerting
Automated fault detection combining rule-based and statistical methods against the live stream of BMS, meter, and sensor data, because threshold rules alone miss gradual degradation. Faults are ranked by energy waste, repair cost, and comfort impact, then pushed as pre-populated work orders into your CMMS.
Built with
ASHRAE Guideline 36 · Maximo · Planon · Corrigo

Building systems generating data that nobody is using?

Tell us what systems you have installed, what your facilities team needs to see, and what your tenants need from a portal. We'll design the platform and give you a fixed cost.

Request a 30-min call

IoT Development, overview of all IoT development capabilities
IoT Platform Development, end-to-end IoT platform architecture and device management
Industrial IoT, industrial IoT for manufacturing and process environments
Asset Tracking Software, GPS and BLE asset tracking for equipment inside buildings

Stay on topic

More on IoT & connected devices

Article

Fleet Management Software Development: Cost, Timeline, and When to Build Custom

Samsara bills $27-$33 per vehicle per month. At 100 trucks, that is $39,600 a year before add-ons. Here is what fleet management software development actually costs, what you get at each phase, and which operators should build instead of subscribe.

Article

Escape Room Management Software: Build vs. Buy for Franchise Operators

Custom escape room management software costs $100,000-$180,000 for an MVP and takes 12-16 weeks. Here is when Resova, Xola, and FareHarbor stop working for franchise operators and what a custom build actually covers.

Article

Edge Computing in IoT: When to Process Data at the Edge vs. the Cloud

Sending every sensor reading to the cloud costs more in latency and bandwidth than most IoT teams plan for. Here is when edge computing is worth the added complexity, and what it costs to get wrong.

: We integrate with the most common building management and IoT systems: BMS platforms (Johnson Controls, Siemens Desigo, Schneider EcoStruxure, Honeywell), HVAC controllers via BACnet, lighting systems via DALI or KNX, access control systems via REST API or manufacturer SDKs, energy meters via Modbus or M-Bus, and occupancy sensors via MQTT or Zigbee. For legacy building systems without network connectivity, we use protocol gateways or hardware data loggers. The integration scope depends on which systems are installed, what protocols they expose, and what data you need from each. We assess integration feasibility for each system during scoping.
: Smart building software reduces energy costs by giving building managers visibility into what is consuming energy, when, and where, which most currently lack beyond a monthly utility bill. Specific mechanisms include: identifying HVAC and lighting running in unoccupied zones outside operating hours; detecting equipment fault conditions (refrigerant leaks, HVAC running inefficiently) that show up as energy anomalies before they cause failure; enabling demand response, automatically reducing non-critical loads during peak tariff periods; and providing benchmarking across floors, buildings, or time periods so managers know which interventions had the most impact. Typical outcomes in commercial buildings are 15-30% energy reduction, though this depends on baseline efficiency and the scope of controls integration.
: Yes. BACnet (the most common protocol for HVAC and building automation controllers), LON (used in older building automation systems and some lighting controllers), and KNX (common in European commercial buildings for lighting and HVAC control) are all in scope. We use protocol gateways and integration middleware to connect these systems to modern cloud platforms or on-premise servers. We also integrate directly with Modbus for energy meters, M-Bus for utility metering, and MQTT for modern IoT sensors. The integration architecture depends on which protocols your installed systems use and what level of control (read-only monitoring vs read-write control) is required.
: A focused smart building management platform, integrating two to three building systems, energy monitoring dashboard, basic occupancy analytics, and a facilities management interface, typically runs $35,000-$90,000. Platforms covering multiple buildings, full tenant portal functionality, advanced energy optimization, fault detection, and integration with property management systems run higher. Cost depends on the number of systems integrated, building count, tenant-facing requirements, and the complexity of the analytics and alerting layer. We scope before pricing and deliver a fixed-cost proposal.

Work with us

Tell us what you need. We'll tell you what it would take.

We scope Smart Building Software Development in 30 minutes. You walk away with a clear cost, timeline, and approach. No commitment required.

Scope and cost agreed before work starts. No surprises. No obligation.
Working prototype within 3 weeks of kickoff.
Pay by milestone. You see progress before each invoice.
60-day post-launch warranty. Bug fixes, UI tweaks, and deployment support. No retainer.
All conversations are NDA-protected.

Smart Building Software Development

Sound familiar?

What we build

Building systems generating data that nobody is using?

Related IoT development services

More on IoT & connected devices

Frequently asked questions

Tell us what you need. We'll tell you what it would take.