Stage 1 - Site clearing, soil testing and ground preparation
First thing you do on a plot is cut down any trees, remove boulders and level the ground. In a tier-2 city the cost of clearing is roughly Rs. 30-40 per sq ft, so for 1,200 sq ft you'll spend about Rs. 45,000-48,000.
Next comes soil testing as per IS 2720. A reputable lab (e.g., SGS India or Bureau of Indian Standards accredited centre) will give you a full geotechnical report for Rs. 8,000-12,000. The report tells you whether you need a shallow strip foot or a deep pile foundation. Ignoring this is the most common fraud in the trade - you'll end up with cracks later.
If the soil is lateritic or has high clay content, add a 150 mm sand-cement blinding layer (M-15 grade, IS 269) before excavation. This prevents water seepage into the trench during monsoon.
Stage 2 - Layout marking, excavation and shoring
Surveyor marks the foundation lines on the cleared ground using nylon tape and pegs. For a 2 BHK with 1200 sq ft, typical foundation dimensions are 2.4 m x 1.2 m per column, spacing 3.6 m.
Excavation depth depends on bearing capacity. In most tier-2 cities you'll dig 1.2-1.5 m for strip foot, 2.5-3.0 m for isolated foot. Excavation cost is about Rs. 150 per cum (cubic metre). For a 150 cum cut you'll pay Rs. 22,500.
Shoring is mandatory if excavation exceeds 1.5 m in monsoon months. Use steel sheet piles or timber planks - cost Rs. 100-120 per sq ft of wall.
Stage 3 - Foundation concrete, reinforcement and plinth beam
Foundation concrete must meet IS 1542 (sand) and IS 269 (OPC). Most contractors use 25 MPa M-25 grade cement, which costs Rs. 5,500 per 50 kg bag (Ultratech, ACC). For a 1200 sq ft house you'll need about 180 bags, i.e. Rs. 990,000.
Related: Concrete Curing Methods and Mistakes and Damp Proof Course Guide for related reading on stages 3, 5, and 7.
Reinforcement follows IS 1786 for TMT bars. Tata Tiscon 12 mm bars cost Rs. 6-8 per kg, Kamdhenu 12 mm Rs. 4-5 per kg. For foundation you need roughly 2,500 kg, so Tata Tiscon will set you back Rs. 15,000-20,000 - worth the premium for crack-free footings.
Plinth beam (also called ground-floor beam) is cast after the footings have cured 7-10 days. The beam is 200 mm thick, 250 mm wide, reinforced with 12 mm bars at 150 mm centres. Concrete volume about 0.12 cum, costing Rs. 9,000-10,000.
Stage 4 - Column casting up to plinth level
Columns are raised in 2-3 lifts. For a 2-storey house you'll have 8-10 columns, each 250 mm x 250 mm. Use 12 mm TMT at 150 mm centre. Concrete grade M-25, same cement as foundation.
Each column uses roughly 0.025 cum concrete, costing Rs. 2,000. Total column concrete cost Rs. 20,000-22,000. Reinforcement weight per column is about 80 kg, total 800 kg, so Rs. 5,000-6,000.
Make sure you place a 20 mm thick DPC (damp proof course) of bitumen sheet right above the plinth to stop rising moisture - a mistake most first-time owners make by skipping DPC and then fighting mold later.
Stage 5 - Backfilling, compacting and Damp Proof Course (DPC)
After column tops are set, backfill with approved river sand mixed with 5 % cement (wet mix). Compaction should be done in 3-4 layers, each hammered with a plate compactor - IS 456 mandates 95 % Proctor density.
Backfilling cost is about Rs. 70 per cum, so 120 cum equals Rs. 8,400. DPC sheet (bitumen-saturated felt) costs Rs. 30 per sq ft, total Rs. 1,200-1,500.
Stage 6 - Superstructure - columns, beams and slab (RCC frame)
If you go RCC frame, the load-bearing walls are replaced by concrete columns and beams. This is faster and more earthquake-resistant (IS 1893). For a 1200 sq ft house you'll need 6-8 beams, each 300 mm x 250 mm.
Beam reinforcement: 12 mm bars at 150 mm centre, plus 8 mm stirrups at 100 mm. Concrete volume per beam about 0.12 cum, so total 0.96 cum - Rs. 80,000 in cement, sand, aggregate.
Slab casting: 125 mm thick RCC slab, reinforced with 12 mm bars at 200 mm centre and 8 mm distribution steel at 150 mm. Concrete volume roughly 0.30 cum per 100 sq ft, so for 1200 sq ft you need 3.6 cum - Rs. 300,000.
Curing time is 21-28 days. Keep the slab wet with a hose or wet burlap; cutting corners here leads to shrinkage cracks that cost thousands in repair.
Stage 7 - Brickwork, lintels and wall plaster
Brickwork is done after the slab has attained 70 % strength (about day 21). Use IS 383 compliant fly-ash bricks (size 190 mm x 90 mm x 90 mm). Cost is Rs. 8-10 per brick; you'll need around 12,000 bricks - Rs. 96,000-120,000.
Lintel design follows IS 456 - for a 3-metre opening a 150 mm x 250 mm reinforced concrete lintel with 12 mm bar at 200 mm centre suffices. Concrete volume per lintel 0.03 cum, costing Rs. 2,500 each. Typical 2-3 lintels per house - Rs. 7,500-10,000.
Wall plaster (internal) uses cement-sand ratio 1:4 (IS 269) - 10 mm thick. For 1200 sq ft wall area you'll need about 0.12 cum cement, i.e. Rs. 6,600.
Stage 8 - Concealed electrical and plumbing conduits
All wiring and pipework is laid before plaster. Use PVC conduit (IS 3043 for earthing) of 20 mm for power and 16 mm for lighting. For a 2-BHK you'll need roughly 250 m of conduit - Rs. 7,500-9,000.
Plumbing uses CPVC pipes for cold water (IS 1235) and PPR for hot water (IS 15810). 50 m of CPVC (Rs. 150 per metre) and 30 m of PPR (Rs. 200 per metre) - total Rs. 13,500.
Make sure you keep a minimum 150 mm clearance from structural steel as per IS 456 - a shortcut many contractors take and later you get hot-wire burns or pipe bursts.
Stage 9 - Internal and external plaster
Internal plaster: 12 mm thick, cement-sand 1:5. For 1200 sq ft wall area you need about 0.15 cum cement - Rs. 8,250.
External plaster: 15 mm thick, mix 1:4 with waterproofing additive (Sika Cem-Seal, Rs. 1,200 per 20 kg bag). Volume about 0.20 cum cement - Rs. 11,000 plus additive Rs. 2,500.
Plaster must be cured for 7-10 days. Skipping curing causes delamination, especially when monsoon hits.
Stage 10 - Waterproofing of bathrooms and roof slab
Bathrooms: apply 2-coat liquid waterproofing (e.g., Dr. Fixit or Asian Cement). Coverage is 1 sq m per litre. For 30 sq m you need 30 litres - Rs. 6,000-7,500.
Roof slab: a 2-mm bitumen membrane (IS 1489) laid over a 12 mm sand-cement screed. Membrane cost Rs. 45 per sq ft - total Rs. 54,000 for 1200 sq ft roof.
Do this before final plaster; otherwise you'll have to break the slab later.
Stage 11 - Door and window frames, shutters and hardware
Wooden doors (teak or sheesham) cost Rs. 12,000-15,000 each. For a 2-BHK you need 4 doors - Rs. 48,000-60,000.
Aluminium windows (UPVC glazing) cost Rs. 3,500 per sq ft. For 30 sq ft of window area - Rs. 105,000.
Hardware (hinges, bolts, locks) from Hafele or Godrej - budget Rs. 12,000-15,000.
Stage 12 - Putty, primer and painting
Putty: use 2-mm acrylic putty, 1 kg per 10 sq ft. For 1200 sq ft you need 120 kg - Rs. 18,000.
Primer (Zinc-rich) Rs. 150 per litre, coverage 10 sq ft per litre - Rs. 18,000.
Emulsion paint (Asian Paint, Nerolac) Rs. 250 per litre, coverage 12 sq ft. For 2-coat internal finish you need about 100 litres - Rs. 25,000.
Exterior paint (weather-proof acrylic) Rs. 300 per litre, coverage 10 sq ft - 120 litres - Rs. 36,000.
Stage 13 - Flooring - vitrified tiles, granite, marble
Living-room and bedroom: Vitrified tiles (Kajaria, Somany) Rs. 80-120 per sq ft. For 600 sq ft you'll pay Rs. 48,000-72,000.
Kitchen floor: granite (black granite, Rs. 150-200 per sq ft) for 100 sq ft - Rs. 15,000-20,000.
Bathrooms: anti-slip ceramic tiles Rs. 70-90 per sq ft for 80 sq ft - Rs. 5,600-7,200.
Tile fixing mortar (M-5) and grout add another Rs. 8,000-10,000.
Stage 14 - Plumbing fixtures, sanitary ware and electrical fittings
WC & washbasin set from Hindware or Cera - Rs. 12,000-15,000 per set. Two sets = Rs. 24,000-30,000.
Shower set (hand-held + hose) Rs. 4,500-6,000.
Electrical fittings (switches, sockets, modular switches) from Legrand - Rs. 2,500-3,500 per unit. For 40 points budget Rs. 100,000-140,000.
Ceiling fans (Crompton) Rs. 2,500 each - 4 fans = Rs. 10,000.
Stage 15 - Modular kitchen, wardrobes and final interior carpentry
Modular kitchen from Sleek or Spacewood - Rs. 1,200-1,500 per sq ft. For a 70 sq ft kitchen you'll spend Rs. 84,000-105,000.
Wardrobes: laminate finish, Rs. 800 per sq ft. For 50 sq ft total - Rs. 40,000.
All carpentry should be done after plaster and before final paint touch-up.
Stage 16 - Final cleaning, snag list and handover
Hire a professional cleaning crew - Rs. 15,000-20,000. They will remove cement dust, polish tiles and clean fixtures.
Snag list: check for loose plaster, water stains, door alignment, missing screws. Fix everything before you sign the handover.
Owner should get as-built drawings, reinforcement schedule and concrete test certificates (IS 456 compliance).
Typical timeline for a 1,200 sq ft 2 BHK in a tier-2 city
| Stage | Duration (weeks) |
|---|---|
| Site clearing & soil testing | 1-2 |
| Layout marking & excavation | 2-3 |
| Foundation & plinth beam | 3-4 |
| Column casting to plinth level | 1-2 |
| Backfilling & DPC | 1 |
| Superstructure (columns, beams, slab) | 4-5 |
| Roof slab curing | 3 (21-28 days) |
| Brickwork & lintels | 3-4 |
| Concealed MEP | 2-3 |
| Plaster (int & ext) | 2-3 |
| Waterproofing | 1-2 |
| Doors & windows | 1-2 |
| Putty, primer, paint | 2-3 |
| Flooring | 2-3 |
| Fixtures & fittings | 1-2 |
| Kitchen & wardrobes | 2-3 |
| Final cleaning & handover | 1 |
Total: roughly 32-38 weeks, assuming no monsoon delay. If monsoon hits during excavation, add 2-3 weeks for de-watering and extra curing.
Cost breakdown for a 1,200 sq ft 2 BHK (RCC frame) in a tier-2 city
| Stage | Approx. Cost (Rs. Lakhs) |
|---|---|
| Site clearing & soil testing | 0.5-0.6 |
| Excavation & shoring | 0.4-0.5 |
| Foundation concrete & reinforcement | 2.5-3.0 |
| Plinth beam & column up-to-plinth | 0.8-1.0 |
| Backfilling, DPC | 0.2-0.3 |
| Superstructure (RCC columns, beams, slab) | 6.0-7.0 |
| Roof slab curing & waterproofing | 0.8-1.0 |
| Brickwork & lintels | 1.2-1.5 |
| Concealed electrical & plumbing | 0.9-1.2 |
| Plaster (int & ext) | 0.7-0.9 |
| Waterproofing (bath & roof) | 0.7-0.9 |
| Doors, windows & hardware | 1.2-1.5 |
| Putty, primer, paint | 0.9-1.1 |
| Flooring (tiles, granite) | 1.0-1.3 |
| Sanitary fixtures & electrical fittings | 0.9-1.2 |
| Modular kitchen & wardrobes | 1.2-1.5 |
| Final cleaning & handover | 0.1-0.2 |
| Total | ~Rs. 22-26 lakhs |
Load-bearing masonry construction will shave off about Rs. 3-4 lakhs on the superstructure but you'll lose seismic resilience and may need thicker walls, which eats up interior space.
RCC frame vs Load-bearing masonry - quick comparison
| Aspect | RCC Frame (IS 456) | Load-bearing Masonry (IS 383) |
|---|---|---|
| Construction speed | 30-35 % faster | Slower due to thicker walls |
| Earthquake resistance | High - ductile detailing per IS 875 | Low - brittle failure mode |
| Material cost | Higher cement & steel (Rs. 2-3 lakhs more) | Lower steel, more bricks (Rs. 1-2 lakhs less) |
| Space utilisation | More usable floor area (walls 100-150 mm) | Walls 200-250 mm thick |
| Thermal mass | Moderate | High - natural cooling but can cause dampness |
| Common mistakes | Skipping column stirrups, inadequate curing | Uneven brickwork, missing mortar joints |
Monsoon considerations
- Excavation during heavy rain needs de-watering pumps (Rs. 5,000-8,000 per day). Without it, trench walls collapse.
- Concrete work after rain should be protected with poly-sheet and curing compounds; otherwise you get a weak surface.
- Plaster and paint should be delayed at least 2 weeks after heavy rain to avoid blistering.
- Waterproofing membrane must be applied when ambient temperature is 20-30 degrees C; too cold reduces adhesion.
Common mistakes that bite you later
- Skipping soil report - leads to settlement cracks.
- Using sub-standard sand (not IS 1542) - results in weak mortar.
- Not providing a proper DPC - causes rising damp in ground floor.
- Rushing slab curing - leads to shrinkage cracks and reduced load capacity.
- Installing electrical conduit too close to reinforcement - can cause short circuits.
- Ignoring expansion joints in large roof slabs - tiles pop off during temperature swing.
Related: Staircase design and dimensions guide
Related: Jindal Panther TMT quality guide
FAQ
What is the minimum depth for strip foot in a typical tier-2 city?
For medium clay soils the safe depth is 1.2 m. If the soil report shows low bearing capacity, increase to 1.5 m or go for isolated foot.
Can I use fly-ash bricks for load-bearing walls?
Yes, provided they meet IS 383 and you use a cement-sand mortar of 1:5. Fly-ash bricks have better uniformity and lower water absorption.
Is it worthwhile to spend extra on Tata Tiscon bars for lintels?
Not really. Lintel steel sees low stress, so Kamdhenu or Shyam Steel (Rs. 4-5 per kg) is fine. Save the premium for foundation and column bars.
How much should I allocate for contingency?
Always keep 8-10 % of the total budget for unexpected items - extra sand, extra curing water, or a sudden price hike in steel.
When should I start the roof waterproofing?
After the slab has cured 28 days and the final plaster is dry (no damp spots). Apply the membrane in early morning to avoid dust settling.