Every week, we get a call that goes like this: "We just finished construction and want to add home automation. How much will it cost?" When we do the site visit, the answer is almost always: three times more than if they had planned for it during construction.
This guide is for anyone currently building or about to start building a home in Chennai.
Why Retrofit Is So Expensive
Smart switches require a neutral wire at every switch point. Older construction and many new constructions don't include neutral wire routing to switch boxes — only the live wire goes to the switch. Adding neutral wires after walls are plastered and painted means:
- Breaking open finished walls
- Re-routing conduit
- Replastering and repainting
- Higher labour cost and time
💰 Cost comparison: Smart-ready wiring during construction costs ₹8,000–₹15,000 extra. The same work after construction: ₹40,000–₹80,000. Plan now and save.
What to Tell Your Contractor
Print this list and give it to your electrician before the first wire goes in:
- ✅ Neutral wire to every switch point — non-negotiable for smart switches
- ✅ Cat6 network cable to strategic points — for IP cameras, NVR, and wired access points
- ✅ Conduit at ceiling level for camera routing — especially at entry/exit points, gate, parking
- ✅ Dedicated circuit for home automation panel — where the local server and switches will be housed
- ✅ FR-grade (fire retardant) wires throughout — standard requirement regardless of automation
What It Costs to Do It Right During Construction
- Neutral wire routing (3BHK): ₹8,000–₹12,000 additional
- Cat6 cabling for 6–8 camera points: ₹6,000–₹10,000
- Conduit for automation panel: ₹2,000–₹4,000
Total additional cost during construction: ₹16,000–₹26,000. This enables a full automation system worth ₹1,50,000+ with zero wall-breaking later.
Book a Pre-Construction Consultation
Visil Tech offers a pre-construction electrical planning consultation. We review your floor plan, mark camera positions, switch point locations, and conduit routing — and give your contractor a spec sheet to follow.
This service is free for construction projects above 2,000 sq. ft. Call us at +91 89397 09676 to book.
