Villa retrofit, KNX added to an existing house
Complete rework of the electrical infrastructure without destroying the finishes, plus a KNX bus and a self-consumption solar installation.
- Building type
- Villas
- Floor area
- 620 m²
- Context
- Major refurbishment
- Brief
- Existing house brought up to standard
The brief
What the building demands
- 01Bringing an ageing installation up to standard without breaking the finishes
- 02Adding intelligence to a house that was never cabled for it
- 03Gaining energy autonomy despite a partly constrained roof
- 04Living in the house while the work goes on
The architecture
The response, layer by layer
The same order of dependency as on every project we run: energy first, supervision last. Each layer links to the discipline that handles it.
- 01ENERGYEnergy
Array sized on the genuinely usable roof area, with battery support on the essential circuits. Discipline
- 02ELECTRICALElectrical
Board fully reworked, earthing redone, existing routes reused wherever they allow it. Discipline
- 03NETWORKNetworks
Wired backbone where ducts exist, wireless relays elsewhere, with no chasing into finished rooms. Discipline
- 04SECURITYSecurity
Wireless perimeter detection, cameras on existing supplies, no new penetrations through the façade. Discipline
- 05ACCESSAccess control
Motorisation of the existing gate, video intercom replacing the original handset. Discipline
- 06FIREFire
Radio-interconnected detectors, with no additional cabling through refinished ceilings. Discipline
- 07AUTOMATIONAutomation
Wired KNX in the open areas, Zigbee gateway for the rooms cable can no longer reach. Discipline
- 08MONITORINGSupervision
Generation and consumption tracking, so the solar investment can be checked against what was promised.
Technologies
What we bring to bear
- KNX
- Zigbee 3.0
- IEC 60364
- IEC 62446
- Home Assistant
Open, documented standards rather than closed systems: an installation must remain serviceable and extendable by another integrator.
In use
What this architecture produces
- The installation meets standard without the finishes having been redone.
- Wireless fills exactly what cable could no longer reach.
- Solar generation is verifiable, so the investment is auditable.
This record describes a reference architecture. Measured performance figures are published only for completed sites, with the client's agreement.
Describe the building. We will describe the infrastructure.
A study, a detailed cost breakdown discipline by discipline, and one point of contact from the first survey through to maintenance. We reply within two working days.