The question that saves ₹3 lakh
Every premium residential client eventually asks about smart homes — lighting control, security, climate automation, voice assistants, blinds, music. The actual products change every two years. The wiring to support them, if you put it in now, lasts the life of the building.
The right question at design stage is not "which smart home brand should I pick?" but "what infrastructure should be in the walls before the concrete is poured?" Getting the infrastructure right costs maybe ₹1.5–2 lakh extra at build time. Retrofitting the same infrastructure into a finished home costs ₹10–15 lakh and wrecks the walls.
What to plan, in priority order
1. A structured cabling backbone
Every modern home should have a central telecom/networking room — a 400mm × 600mm enclosure, mains-powered, ventilated, with a rack space. From this point, Cat6A cables run as a star topology to every room. Even if you never use half of them, the cost of adding them to an open-wall project is negligible.
Minimum pull list per room:
- Bedrooms: 2× Cat6A (data + future), 1× coaxial (TV), 1× HDMI conduit.
- Living areas: 4× Cat6A, 2× coaxial, 2× HDMI conduit, speaker cable to ceiling zones.
- Kitchen: 2× Cat6A (countertop + ceiling mounted).
- Balconies, garden, gate, parking: 1× Cat6A each (for cameras, access control, WiFi extenders).
- Utility/laundry: 1× Cat6A (smart washing machine, WiFi).
All of this terminates in the telecom cabinet on rack-mount patch panels, not twisted together in a junction box behind the TV.
2. WiFi access point locations, not routers
A single router in a corner cannot cover a 3,000 sq ft home on two floors. Plan for ceiling-mounted WiFi access points at fixed locations — typically one per 800–1,000 sq ft, with Cat6A data+PoE delivered to each location. You can populate the access points later. The ceiling pre-wiring is the hard part.
3. A universal electrical layout for lighting control
If you think there is any chance you might install a lighting control system (Lutron, Philips Dynalite, or any of the newer retrofit-able systems), do two things at wiring stage:
- Run loop-in wiring from a central cupboard, not room-by-room daisy-chain.
- Use 2.5 sq mm conductors to switch points, not 1 sq mm — gives headroom for DALI, 0-10V, or smart-switch retrofits later.
Adding this headroom costs almost nothing. Not adding it means re-pulling every lighting circuit if you ever upgrade.
4. Camera and access control conduits
Front gate, main door, garage door, rear access, terrace, perimeter. Each needs a conduit with a pull-string and a Cat6A cable terminated at the telecom room. The camera brand changes every three years. The conduit stays.
5. Curtain and blind motor provision
Motorised blinds are a ₹30,000 per window retrofit. A ₹200 per window provision at build time — a conduit from the pelmet down to a switchboard point — makes the retrofit clean. Put it on every bedroom and living area window. You don't have to use it.
6. A UPS and generator path
Whatever smart infrastructure you install, it needs to survive a Chennai power cut. Plan:
- A small online UPS (2 kVA) feeding the telecom cabinet and a dedicated "essentials" circuit covering the fridge, router, and emergency lighting.
- A generator changeover path that doesn't interrupt the telecom UPS.
This is not smart-home-specific, but most smart systems die silently during outages without it, which is worse than no smart system at all.
What you do not need to decide now
- The brand of lighting control.
- Whether you'll use Alexa, Google Home, Apple HomeKit, or Home Assistant.
- The exact camera model.
- The brand of motorised blinds.
These decisions are all better made 3–6 months before move-in, with a full installer quote, not at the design stage. At design stage, the only decisions are: where are the wires, where are the conduits, where are the termination points.
What to ask your builder
- "Is there a dedicated telecom/networking room in the plan, and is it on the electrical drawing?"
- "Are the Cat6A runs terminated to a patch panel, or to wall points only?"
- "How many access-point-capable ceiling boxes are planned per floor?"
- "Is the lighting circuit sized for a future smart switch retrofit?"
A builder who has done this before will have a standard smart-ready specification. A builder who has not will say "we'll take care of it" and deliver a twisted bundle in a ceiling box.
The trend
Indian smart-home adoption is doubling roughly every three years. What is "premium" today will be "expected" by the time a home built now is five years old. The cost of doing the infrastructure now is trivial. The cost of retrofitting is not.
If you want our full smart-ready wiring specification for your project, get in touch. It is a two-page document that has paid for itself on every home we've handed over.