A Rewiring Cost Calculator is a digital or manual tool designed to estimate the total cost of rewiring a building. It takes into account various parameters such as the area to be rewired, the number of electrical points, types of fixtures, and labor costs. This calculator simplifies a complex calculation process by integrating all cost components into a single formula. It allows users to make accurate financial plans, compare quotes from contractors, and avoid overspending. By providing detailed cost breakdowns, it also helps in understanding the pricing structure of rewiring projects.
How the Rewiring Cost Calculator Works
The calculator works by quantifying every component of an electrical rewiring project. Users input the total area in square feet, the number of light, fan, socket, AC, and heavy appliance points. It also factors in switches, modular accessories, cables, distribution boards (DB), MCBs, and earthing systems. Labor charges, miscellaneous items such as PVC conduits, casing-capping, fittings, and applicable taxes are added to ensure an accurate estimate. The calculator instantly aggregates all these inputs to provide the total rewiring cost, helping project managers and homeowners make timely decisions without manually calculating each item.
Formula with Variables Description
Total Rewiring Cost =
(Total Area in sq.ft × Cost per sq.ft for wiring)
- (Number of Light Points × Cost per Light Point)
- (Number of Fan Points × Cost per Fan Point)
- (Number of 5A/6A Socket Points × Cost per 5/6A Point)
- (Number of 15/16A Power Points × Cost per 15/16A Point)
- (Number of AC Points × Cost per AC Point)
- (Number of Geyser/Heavy Appliance Points × Cost per Heavy Point)
- (Number of Switches + Sockets + Regulators + Boxes) × Average cost per modular accessory
- (Length of Main/MCB to DB cable in feet × Cost per foot of main cable)
- Cost of MCBs & DB (Distribution Board)
- Cost of Earthing (complete system)
- Miscellaneous items (casing-capping/PVC conduit/steel conduit/fittings)
- Labour Charges
- GST / Taxes (if applicable)
Variable Descriptions:
- Total Area in sq.ft: The total built-up area to be rewired.
- Light, Fan, Socket, AC Points: Number of installation points for respective electrical appliances.
- Switches, Sockets, Regulators, Boxes: Number of modular accessories required.
- Cable Length: Total length of wiring from MCB/DB to individual points.
- MCB & DB Cost: Cost of circuit protection and main distribution.
- Earthing: Cost for safety grounding system.
- Miscellaneous Items: Conduits, casing-capping, fittings, and other accessories.
- Labour Charges: Fees for skilled electricians.
- GST/Taxes: Applicable government taxes on materials and services.
General Terms & Reference Table
| Term | Typical Value / Conversion | Notes |
|---|---|---|
| Cost per sq.ft for wiring | 50–120 PKR | Depends on type of wire and building size |
| Cost per Light Point | 300–500 PKR | Includes fixture and basic wiring |
| Cost per Fan Point | 400–700 PKR | Varies by fan type |
| Cost per 5/6A Socket | 250–400 PKR | Standard modular socket |
| Cost per 15/16A Power Point | 350–600 PKR | For heavy appliances |
| Cost per AC Point | 800–1500 PKR | Includes circuit wiring and switch |
| Cost per Heavy Appliance | 1000–2000 PKR | Example: Geyser, water pump |
| Labour Charges | 15–25% of material cost | May vary by location |
| Main Cable Cost | 50–120 PKR per ft | Depends on copper/aluminum type |
| GST / Taxes | 5–17% | Local regulations apply |
Example
Suppose a 1200 sq.ft house requires:
- 15 light points, 8 fan points, 12 5A sockets, 6 15A power points, 2 AC points, 1 geyser.
- Modular accessories: 50 switches and sockets
- Main cable: 300 ft
- MCB & DB: 10,000 PKR
- Labour: 20% of material cost
Using the formula:
Total Rewiring Cost = (1200×80) + (15×400) + (8×500) + (12×350) + (6×500) + (2×1200) + (1×1500) + (50×250) + (300×80) + 10,000 + 8000 + 5000 + (Material Cost × 20%) + GST
This calculation provides a complete estimate for budgeting and planning.
Applications
Residential Buildings
Homeowners can estimate rewiring costs before renovating or constructing a house. This helps in planning finances and choosing contractors.
Commercial Spaces
Businesses can use the calculator to plan electrical installations for offices, stores, or warehouses, ensuring compliance and cost control.
Renovation & Retrofitting
During renovations, replacing old wiring systems can be costly. The calculator helps forecast expenses for safe and modern rewiring upgrades.
Most Common FAQs
A rewiring cost calculator provides a reliable estimate when accurate inputs are entered. While it considers standard pricing for materials, labor, and accessories, prices may vary based on location, brand, and complexity. It is highly accurate for budgeting and comparison purposes but should be cross-checked with contractor quotes.
Yes. Users can input only the areas or points that require rewiring. The calculator adjusts the total cost accordingly, providing flexibility for renovations, room-specific upgrades, or phased electrical projects.
Absolutely. Labor is a crucial component in rewiring costs. Users can input labor charges as a fixed amount or percentage of material costs. This ensures the total estimate covers both materials and skilled electrical services.