A good 100 gaj house design fits a comfortable 2BHK on a single floor or a 3BHK across G+1 on a 900 sq ft plot, with careful planning for light, stairs and parking. Since 1 gaj equals 1 square yard (9 sq ft), a 100 gaj plot is 900 sq ft, one of the most common plot sizes in Delhi colonies and across NCR. This guide covers plot dimensions, bylaw basics, four practical layouts, design tips for narrow plots, front elevation ideas and indicative 2026 construction costs.
What 100 Gaj Means: Plot Size and Dimensions
In North India, plot sizes are usually quoted in gaj. One gaj is one square yard, which is 9 sq ft, so a 100 gaj plot is 900 sq ft (about 83.6 sq m). The same 900 sq ft can come in very different shapes, and the shape affects your design more than the area does.
| Dimensions | Area | Pros | Cons |
|---|---|---|---|
| 25 × 36 ft | 900 sq ft | Balanced proportions; room for two rooms across the front | Middle rooms may need a light well |
| 30 × 30 ft | 900 sq ft | Wide frontage, good light, easy parking and a strong elevation | Less common; setbacks eat into a square plot on more sides |
| 20 × 45 ft | 900 sq ft | Typical colony plot; efficient linear planning | Narrow front; deep centre gets little daylight |
| 18 × 50 ft | 900 sq ft | Deep plot allows front and rear open spaces | Very narrow; tight stairs and one-room-wide plans |
Wider plots are easier to design and light well; narrower, deeper plots need a smarter plan with a central courtyard or shaft to bring daylight into the middle of the house.
Ground Coverage, FAR and Setbacks: Check Before You Design
How much you can build on a 100 gaj plot is decided by local building bylaws, not by the plot area alone. Three rules matter most:
- Ground coverage: the percentage of the plot you can cover on each floor.
- FAR (Floor Area Ratio): the total built-up area allowed across all floors, as a multiple of plot area.
- Setbacks and height: mandatory open spaces at the front, rear or sides, and the maximum height or number of floors.
In many Delhi residential colonies, small plots are allowed relatively high ground coverage and multiple floors, often with stilt parking, while sector plots in Gurugram, Faridabad or Noida follow their own authority's rules. Rules differ by authority, colony type and road width, and they are revised from time to time. Read our guide to FAR and building bylaws in Delhi NCR, and always confirm the current limits for your specific plot with the local authority or your architect before finalising the plan.
Free toolConstruction Cost CalculatorApproximate cost to build your house — floor-wise, city-wise, by quality.Try it freeFour Practical 100 Gaj Layout Options
The examples below assume a buildable footprint of roughly 700–800 sq ft per floor after setbacks and shafts. Your actual area will depend on bylaws and plot shape.
1. Simple 2BHK on a Single Floor
The simplest 100 gaj house design. From the front: a car porch or small forecourt, then a living room, an open dining area with the kitchen alongside, a common bathroom, and two bedrooms at the rear with one attached bathroom. Keep the staircase to the roof on one side wall so it can later serve an upper floor. Ideal for a small family or a first phase of construction.
2. 3BHK on G+1
The ground floor holds parking, living, dining, kitchen, a guest or parents' bedroom with attached bath, and a powder room. The first floor has the master bedroom with attached bath and dressing, a second bedroom, a small family lounge and a front balcony. This split gives privacy to the bedrooms and keeps elderly members on the ground floor. A shared staircase near the centre keeps both floors connected without cutting through the living area.
3. Builder-Floor Style: Stilt + 3 or 4 Floors
Where bylaws permit stilt parking and additional floors, the stilt level takes one or two cars, the entrance lobby and the stair and lift core. Each upper floor becomes an independent 2BHK or compact 3BHK with living-dining, kitchen, two or three bedrooms and a front balcony. A lift shaft planned from day one is worth it even if the lift is installed later.
4. Owner Floor with Rental Unit
Plan the ground floor as a self-contained 1BHK or 2BHK rental unit with its own entrance, and the upper floor or floors as the owner's home. A separate staircase from the front, independent meters and stacked plumbing make both units easy to manage. Rental income can offset part of the construction loan.
Design Tips for Narrow 100 Gaj Plots
Most 100 gaj plots are narrow and deep, and often have neighbours on three sides. These principles make the biggest difference:
- Add a light well or courtyard: a 4×6 ft or larger shaft in the middle of the plan brings daylight and cross-ventilation to rooms that would otherwise be dark.
- Place the staircase smartly: a straight-flight or dog-legged stair along one side wall, near the centre, avoids wasting the front and can double as a light shaft with a skylight above.
- Avoid long corridors: open living-dining-kitchen zones let the space flow and free up area for rooms.
- Stack wet areas: align kitchens and bathrooms floor over floor to simplify plumbing and reduce leakage risk.
- Use the front and rear: put the most-used rooms at the front and rear where windows are possible.
- Build in storage: under-stair storage, lofts and full-height wardrobes keep small rooms usable.
- Vastu-friendly placement: where the plan allows, place the kitchen in the south-east, master bedroom in the south-west and pooja area in the north-east, and keep the centre open. Our vastu checker helps you test a layout, but balance vastu with daylight and practicality.
On a compact plot, a few centimetres matter: door swings, wardrobe depths and stair width should all be drawn and checked before construction starts.
100 Gaj House Front Elevation Ideas
With a frontage of just 18–30 ft, the front elevation has to work hard. These ideas suit 100 gaj homes well:
- Vertical louvres: aluminium or HPL louvres in a wood finish add height, privacy and shade to a narrow facade.
- Jaali screens: CNC-cut metal, terracotta or concrete jaali over balconies or stair windows filters light and gives a distinctive look.
- Cantilever balcony: a projecting balcony with a glass or slim MS railing adds depth and outdoor space on upper floors.
- Stone and plaster contrast: natural stone or stone cladding on one vertical band with smooth plaster on the rest looks premium without covering the whole front.
- Box frame: a bold projecting frame around the windows or balcony of one floor creates a strong modern focal point.
- Double-height stair glazing: glazing the stair wall with a louvre or jaali screen turns the staircase into a feature and lights the core.
- Planter bands: built-in planters on balconies and parapets soften the facade and help with heat.
- Facade lighting: concealed strip lights and wall washers make even a simple 100 gaj house front elevation stand out at night.
Keep materials to two or three, align windows vertically across floors, and design the gate and boundary wall together with the facade. For more styles, browse our modern house elevation designs.
100 Gaj House Construction Cost in Delhi (2026)
The table below gives indicative 2026 construction costs for a 100 gaj house in Delhi, assuming about 750 sq ft of built-up area per floor. Rates are ₹1,650–2,050 (basic), ₹2,050–2,850 (standard) and ₹2,850–4,200 (premium) per sq ft, adjusted by a 1.05 multiplier for Delhi.
| Configuration | Built-up Area | Basic | Standard | Premium |
|---|---|---|---|---|
| Ground floor only | ~750 sq ft | ₹13–16 lakh | ₹16–22 lakh | ₹22–33 lakh |
| G+1 | ~1,500 sq ft | ₹26–32 lakh | ₹32–45 lakh | ₹45–66 lakh |
| G+2 | ~2,250 sq ft | ₹39–48 lakh | ₹48–67 lakh | ₹67–99 lakh |
These figures cover structure and finishing but exclude land, demolition, approvals and statutory fees, architect fees, interiors, a lift and boundary works. A stilt floor, basement or lift will add to the cost. Plug your own area, floors and finish level into our construction cost calculator for a quick estimate that you can adjust by city and finish level.
Why Get a 3D Elevation Before You Build
On a small plot, every design decision is visible from the street and hard to change once the structure is up. A 100 gaj house design 3D model lets you:
- See the front elevation in real materials, colours and lighting before ordering cladding or louvres.
- Compare two or three facade options side by side and pick with confidence.
- Check proportions of balconies, windows and parapets on a narrow frontage.
- Give your contractor a clear visual reference, reducing on-site guesswork and rework.
Our 3D visualisation service produces photorealistic exterior elevations, material options and walkthroughs from your plans, typically as part of the design stage.
Plan Your 100 Gaj Home with Panache Architect
A 900 sq ft plot rewards careful design: the right layout, a light well in the right place and a well-proportioned elevation can make a 100 gaj house feel far bigger than its size. With 3,500+ projects delivered across Delhi NCR over 10+ years, we design compact homes that comply with local bylaws, respect vastu where you want it and stay within budget. Contact us to discuss your plot and get a layout and 3D elevation made for it.
