Electrical & Plumbing Planning for New Karnataka Homes: Pre-Construction Checklist

The single most expensive room to fix after construction is the one you didn't plan electrical and plumbing for properly. Electrical and plumbing planning for a new Karnataka home must be done before plastering — every wire, pipe, switch, socket, faucet, drain, and conduit needs to be on the drawing months before the wall closes around it. This guide walks through the full pre-construction checklist, point-counting, fixture selection, brand recommendations, and 2026 cost estimates for Karnataka homes.

At Sturdy Groups, we treat electrical and plumbing as first-class design citizens — not afterthoughts. The protocols below are what we use on every project across Shivamogga, Davanagere and Bangalore.

When Planning Happens

Electrical and plumbing planning should happen:

1. Concept stage: rough fixture count and AC zones
2. Working drawings: detailed point-to-point plans
3. Pre-construction: client final sign-off
4. Mid-construction (after slab): conduit and pipe routing
5. Pre-plastering: final inspection before walls close

Adding even one socket after plastering costs ₹500-1,000 in chiselling + patching + painting.

Electrical Planning Checklist

Per Bedroom (5-6 points)

• 2-3 sockets at bed level (one each side of bed)
• 1 socket at TV wall (with TV outlet)
• 1 socket near dressing area
• 1 AC outlet (15A, 220V)
• 1 ceiling fan point
• 2-3 lighting points (ceiling + reading lights)
• 1 switch panel near door

Per Bathroom (3-4 points)

• 1 geyser outlet (16A, 220V) — preferably outside wet zone
• 1 exhaust fan point
• 1 socket near mirror (for shaver/hair-dryer)
• 1-2 ceiling/mirror lights
• 1 switch panel

Kitchen (8-12 points)

• 4-6 platform-level sockets (mixer, microwave, induction, kettle, oven, toaster)
• 1-2 wall sockets near refrigerator
• 1 socket for chimney (15A)
• 1 socket for hob (if electric)
• 1-2 ceiling lights + under-cabinet LED
• 1 exhaust fan provision
• 1 RO/water purifier socket

Living Room (4-6 points)

• 1 socket at TV wall (with HDMI provision)
• 2-3 sockets around seating area
• 1 socket at study/work area
• 1 ceiling fan
• 2-4 lighting circuits (ceiling, cove, accent)

Dining (2-3 points)

• 1 socket for pendant chandelier
• 1-2 wall sockets
• 1 lighting circuit

Common / Foyer / Passage

• Doorbell + DB unit
• Foyer light + switch
• Passage lights with two-way switches
• Smart lock provision (if planning)

Utility / Wash / Service Areas

• Washing machine socket (16A)
• Geyser socket if utility geyser
• Exhaust fan
• 1-2 sockets for misc

External / Compound

• Gate lights
• Compound wall lights
• Garden lights (if planned)
• CCTV junction box
• Doorbell button at gate
• EV charging outlet at parking
• 1-2 utility sockets in garage

Critical Provisions Often Missed

• CCTV: 6-8 camera locations + DVR room with LAN
• Internet router: dedicated socket in central location
• Solar inverter: terrace conduit + battery bank space
• Smart home hub: socket near main DB
• Doorbell + intercom: powered wiring
• Smoke detectors: in kitchen + bedrooms

Total Electrical Points (1500 sqft 3BHK Premium)

| Area | Points | |---|---| | 3 bedrooms | 18 | | 2-3 bathrooms | 10 | | Kitchen | 12 | | Living | 6 | | Dining | 3 | | Foyer + passage | 4 | | Pooja | 2 | | Utility | 4 | | External + provisions | 10 | | Total | ~70-90 points |

Per-point cost: ₹600-1,200 (basic Anchor), ₹1,400-2,200 (Havells/Legrand), ₹2,500-4,000 (Schneider + smart switches).

Electrical Distribution Planning

Main Distribution Board (DB)

• Located near entry, accessible
• 100A MCCB main switch
• 6-10 MCB circuits separating lighting, sockets, kitchen, ACs, geysers
• 1 ELCB/RCCB for safety
• Surge protection device

Sub-Distribution

• Bedroom MCB
• Kitchen MCB (high-load circuit for appliances)
• AC dedicated MCBs (one per AC)
• Geyser dedicated MCBs
• External (gate, garden) circuit

Wiring Sizes

• Lighting: 1.5 sqmm copper
• Sockets (5A general): 2.5 sqmm copper
• AC + Geyser (16A): 4 sqmm copper
• Power main lines: 6 sqmm copper
• Earth: dedicated, minimum 6 sqmm

All wires from Polycab, Havells, RR Kabel, Finolex — never unbranded.

Plumbing Planning Checklist

Per Bathroom (8-10 fixtures)

• WC (toilet) with concealed cistern
• Wash basin with mixer
• Shower (overhead + handheld)
• Bathtub (in master, optional)
• Geyser hot/cold lines
• Floor drain (with proper slope)
• Exhaust vent for shower steam
• Bidet/health faucet
• Towel ring + paper holder provisions

Kitchen (4-6 fixtures)

• Sink (single or double bowl)
• Filtered water tap
• RO outlet
• Dishwasher provision (if planning)
• Washing machine water inlet (if utility within kitchen)

Utility (3-4 fixtures)

• Washing machine inlet + drain
• Service sink
• Floor drain
• Outdoor tap

External

• Garden taps (1-2)
• Car wash tap
• Compound wash tap
• Borewell pump + filter

Plumbing System Components

Water Supply

• Underground sump (5,000-10,000 L) for storage
• Pump to overhead tank
• Overhead tank (1,500-3,000 L) by gravity
• Pressure pump for boosters (if needed)
• Hot water lines: CPVC pipes (Astral, Supreme, Ashirvad)
• Cold water lines: CPVC or PEX
• Connection sizes: 25mm main, 20mm branches, 15mm fixtures

Drainage

• Soil pipes (toilet waste): 110mm PVC (Finolex, Prince, Ashirvad)
• Waste pipes (sink, bath): 75-90mm PVC
• Ventilation pipes: 75mm extended above roof
• Floor drains: 50mm
• Slope: 1:80 minimum for gravity flow
• Manholes: external, accessible

Hot Water

• Geysers: 25L instant for bathrooms, 6-10L for kitchen
• Solar water heater: 100-200L for primary supply
• Insulated hot water lines for energy efficiency

Sewage

• Septic tank: minimum 1,500 L for 3BHK, 3-chamber design
• Soak pit: for treated effluent
• Or sewer connection: where available

Plumbing Cost Estimate (1500 sqft 3BHK Premium)

| Item | Cost (₹) | |---|---| | Concealed plumbing (pipes, fittings) | 95,000 | | External drainage + manholes | 30,000 | | Septic tank | 50,000 | | Sump (8000 L) + overhead tank (2000 L) | 85,000 | | Borewell (300-500 ft) + pump | 1,20,000 | | Sanitaryware (Jaquar Continental, 3 baths) | 1,80,000 | | Geyser units (3 × 25L) | 30,000 | | Solar water heater (200L) | 40,000 | | Kitchen sink + accessories | 20,000 | | Labour and installation | 50,000 | | Total | ~₹7 lakhs |

For Luxury (Kohler/Grohe), add ₹2.5-4 lakhs.

Quality Brands Recommended

Electrical

• Switches: Anchor by Panasonic (basic), Havells Crabtree, Legrand, Schneider Electric (premium)
• Wires: Polycab, Havells, RR Kabel, Finolex
• MCBs/DBs: Schneider, Havells, Legrand
• Fans: Atomberg (smart), Havells, Crompton
• Lights: Philips, Wipro, Syska

Plumbing

• CPVC pipes: Astral, Supreme, Ashirvad
• PVC drainage: Finolex, Prince, Ashirvad
• Sanitaryware: Jaquar Continental (standard), Kohler/Grohe (luxury), Cera (value)
• Faucets: Jaquar, Hindware Italian, Hansgrohe (luxury)
• Geysers: AO Smith, Bajaj, Racold

Common Mistakes

After 180+ projects, we see these recurring issues:

1. Too few sockets — owners discover after move-in
2. No AC outlet in bedrooms "for now"
3. Geyser inside bathroom wet zone — safety hazard
4. Concealed plumbing without service hatch — repairs need wall demolition
5. Cheap pipes in concealed lines — leaks in walls
6. Single circuit for kitchen — high appliance load trips MCB
7. No earth pit or weak earthing
8. Drainage slope inadequate — slow drainage, blockages
9. No ventilation pipe — sewer smells in bathrooms
10. No CCTV/automation conduit — retrofit nightmare

Future-Proofing for 2030+

Plan for:

• Solar + battery (mandatory for new BBMP/SMC sanctions on 1200+ sqft)
• EV charging in parking
• Smart home hub central
• Higher AC load (peripheral cooling) — 8 sqmm wires
• Smart appliances (induction, dishwasher, larger fridge)
• Home theatre wiring (HDMI, speaker cabling in walls)
• Office work-from-home spaces (extra sockets + LAN)

How Sturdy Groups Plans MEP

Every Sturdy Groups project includes:

• Detailed electrical layout drawing point-by-point
• Plumbing isometric drawing
• Brand specifications in contract
• Independent QC inspection before plastering
• Pre-handover testing (every socket, faucet, drain)
• As-built drawings delivered at handover for future repairs

Get Your MEP Plan Right

Electrical and plumbing get locked into walls forever. Plan exhaustively now, regret nothing later.

Sturdy Groups designs and executes MEP with senior engineering oversight across Karnataka. Get a free MEP-inclusive quote at /get-estimate or run quick numbers via our cost estimator.