G+1 vs G+2 vs G+3: house construction cost in Bangalore compared

Why the number of floors is your biggest cost decision

When families in Bangalore plan a new home, the first question is usually the per sq ft rate. The second question, and often the bigger one for the final budget, is how many floors to build. A G+1 house and a G+3 house on the same 30x40 site can differ in total cost by ₹30 lakh or more, simply because one has twice the built-up area of the other.

This guide compares the three most common choices for independent houses in Bangalore: G+1 (ground plus one floor), G+2 and G+3. We use worked examples at our current package rates so you can see real numbers, and we explain the things that change when you add floors, such as foundation size, staircase planning, rental income and long-term flexibility.

If you are new to construction pricing, start with our guide to house construction cost in Bangalore, which explains what a per sq ft rate covers and what it does not.

How the total cost is calculated

For a design and build project, the main construction cost is worked out as:

Total built-up area × package rate per sq ft = approximate construction cost

Built-up area is the covered area of all floors added together, including walls. On a typical 30x40 (1,200 sq ft) site in Bangalore, after leaving setbacks as per your sanctioned plan, a floor plate of around 1,000 to 1,100 sq ft is common. For the examples below we use 1,050 sq ft per floor so the maths stays simple.

Our current package ranges are:

• Economy range: ₹1,616 to ₹1,919 per sq ft
• Luxury range: ₹2,121 to ₹2,525 per sq ft

You can see what each package includes on our packages page. The figures below are illustrative. Your final quotation depends on your design, soil conditions, specifications and site.

G+1 house cost (about 2,100 sq ft)

A G+1 home with 1,050 sq ft on each floor gives roughly 2,100 sq ft of built-up area. At our package rates, the construction cost works out to approximately:

• At ₹1,616 per sq ft: about ₹33.9 lakh
• At ₹1,919 per sq ft: about ₹40.3 lakh
• At ₹2,121 per sq ft: about ₹44.5 lakh
• At ₹2,525 per sq ft: about ₹53.0 lakh

A G+1 is the right fit for many first-time builders. It suits a single family that wants a 3 or 4 bedroom home, a smaller loan and a shorter build. The foundation and columns can still be designed for a future floor if you plan to add one later, which is a smart, low-cost step to discuss with your structural engineer at the design stage.

G+2 house cost (about 3,150 sq ft)

Adding one more floor takes the built-up area to roughly 3,150 sq ft. The approximate construction cost becomes:

• At ₹1,616 per sq ft: about ₹50.9 lakh
• At ₹1,919 per sq ft: about ₹60.4 lakh
• At ₹2,121 per sq ft: about ₹66.8 lakh
• At ₹2,525 per sq ft: about ₹79.5 lakh

G+2 is one of the most popular choices we see in North Bangalore areas such as Yelahanka, Thanisandra and Hennur. A common layout is the owner's family on two floors and a rental unit on the third, or the owner on one floor with two rental units. The rent helps with EMIs, which is why many families stretch from G+1 to G+2.

G+3 house cost (about 4,200 sq ft)

With four levels of 1,050 sq ft, the built-up area is around 4,200 sq ft. The approximate construction cost is:

• At ₹1,616 per sq ft: about ₹67.9 lakh
• At ₹1,919 per sq ft: about ₹80.6 lakh
• At ₹2,121 per sq ft: about ₹89.1 lakh
• At ₹2,525 per sq ft: about ₹1.06 crore

G+3 buildings are usually planned as income properties, with three or four rental units, or as a joint family home with separate floors for each generation. Before you plan a G+3, check how many floors and how much floor area your sanctioned plan allows on your plot and road width. Rules vary by authority and location, and building beyond your sanctioned plan creates problems later with the occupancy certificate, utility connections and bank loans.

If you would like a lift in a G+3 building, plan the shaft and the pit from day one. A lift is a separate cost that we discuss with you during design.

What changes as you add floors

The per sq ft rate makes cost comparison easy, but a taller building is not simply a ground floor repeated. Here is what your design team looks at:

• Foundation and columns: More floors mean more load. Footings, columns and beams are designed for the final number of floors, which is why it is important to decide early.
• Soil testing: For G+2 and above, a proper soil test is even more important. Read our guide to soil testing and foundation types.
• Staircase and circulation: Each floor needs safe stairs, and rental units need separate access. Read our staircase design guide for size and layout tips.
• Water and drainage: More units mean a larger sump, overhead tank and drainage planning.
• Timeline: Each extra floor adds slab, masonry and finishing time. See our guide to construction stages and timeline.

Costs to plan for outside the package rate

Whichever option you choose, keep a separate budget for items that sit outside the construction package. These typically include government fees for plan sanction, BESCOM and BWSSB connection charges, loan processing fees, furniture and loose items, and any changes you make to the agreed scope. Our article on the hidden costs of house construction lists them in detail.

A sensible rule is to keep a contingency of at least 5 percent of the construction cost, more if your design or finishes are not fully frozen.

How to decide: G+1, G+2 or G+3?

Use these questions to narrow it down:

• How much space does your family need now and in ten years? If children will need their own floor later, plan the structure for it now.
• Do you want rental income? If yes, G+2 or G+3 usually makes the numbers work better. Our guide to planning a house for rental income covers layouts and returns.
• What EMI is comfortable? Use our guide on how much house you can afford before you fix the number of floors.
• What does your sanctioned plan allow? The rules for your plot set the upper limit.

A practical middle path for many families is to build G+1 or G+2 now, with the foundation and columns designed for one more floor later.

To get numbers for your own plot, try our cost estimator or book a free consultation. We share an estimate within 24 hours, and your final quotation stays fixed once the design is approved.

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