West-Facing 2 BHK - 20 x 40 ft House Plan — 800 sq ft plot · G+1 · 2 BHK · West-heat buffered · Bengaluru · Hyderabad · Chennai · Pune · Nagpur

A 20 x 40 ft plot - just 800 sq ft of land - is one of the most common site sizes handed to a young Indian family building their first home. It is narrow, it is deep, and if it faces west it comes with a problem everyone quietly dreads: the afternoon sun. From about 2 pm the low western sky pours heat straight at the front of the house, and a badly planned west face turns the living room into an oven by evening.

This plan treats that west sun as the design brief, not an afterthought. It is an affordable west-facing 2 BHK built as a G+1 - a public ground floor for living, and two bedrooms upstairs where they are quieter and easier to shade. The whole thing is organised as a narrow linear layout that runs front to back, with a deep, planted buffer on the west so the rooms you actually live in sit a step back from the worst of the glare.

It is sized for the composite climate of Bengaluru, Hyderabad, Chennai, Pune, Nagpur and Indore, where hot summers, a real monsoon and cool-ish winters all have to be handled by one building.

Why West-Facing Needs a Plan

There is nothing wrong with a west plot. Vaastu treats it as perfectly liveable, and a west face gets beautiful late light in winter. The single issue is summer afternoon heat, and it is entirely solvable with layout and shading rather than expensive machinery.

The strategy here has four moves, and each one is cheap:

West-heat move	What it does
Deep west setback + verandah	Pushes living space back from the hot face; the verandah takes the sun
Buffer rooms on the west edge	Parking, porch, stair and toilets soak up heat before it reaches bedrooms
Small, shaded west windows	Openings on the west stay narrow and sit under a deep chajja or the upper balcony
East and courtyard-side glazing	The big glass faces the cooler morning east and the rear, not the west

None of this needs air-conditioning to work. It simply refuses to put a bedroom or a full-height window on the raw western wall.

Site and Orientation

The plot is 20 ft wide at the road on the west, and 40 ft deep. On a narrow plot the side setbacks matter more than anything - lose 3 ft each side and you are down to a 14 ft wide house, so the setbacks here are kept tight and legal rather than generous.

Setback	Used here (indicative)
Front (west, road)	8 ft - covered car park, porch and planted buffer
Rear (east)	4 ft - light, ventilation, utility yard
Sides (north, south)	3 ft each - the code minimum for this plot size

That leaves a buildable strip of roughly 14 ft wide x 28 ft deep. Over G+1 that is about 1,150 sq ft of built-up area, an FAR close to 1.45 - typical of what these cities permit on an 800 sqft plot. Setbacks, FAR and the number of floors allowed vary by city bye-laws; confirm yours with a licensed architect and the sanctioning authority before you finalise anything.

Ground Floor - The Public House

Because the plot is narrow, the ground floor is planned as a single linear sequence from the west road to the east rear: park, enter, live, dine, cook. You walk in from the covered porch on the west, straight into the living room, past the dining and stair, and the kitchen and utility sit at the cool, private rear.

A small study or guest room tucks in beside the kitchen. It is the one flexible room - a home office now, a downstairs bedroom for elderly parents later, since it shares the ground-floor toilet and avoids the stairs.

Ground Floor Schedule

Space	Approx size	Notes
Covered car park	Front setback	Shades the west wall; two-wheeler space beside
Porch and entry	6 x 6 ft	Buffer against west sun and rain
Living	13 x 12 ft	Set back from the west; opens to the rear light
Dining	10 x 9 ft	Central, beside the stair
Stair	7 x 9 ft	Along the south wall; top-lit for stack ventilation
Kitchen	8 x 9 ft	Rear (east), cool morning light, cross-vented
Study / guest	9 x 9 ft	Flexible ground bedroom option
Toilet	5 x 6 ft	Shared, off the dining and study
Utility	Rear yard	Wash, store, water tank, service

Upper Floor - The Two Bedrooms

Both bedrooms live upstairs, which is deliberate. Sleeping rooms are far more comfortable when they are lifted above street noise and, on a west plot, shaded by the roof and a balcony rather than baked at ground level.

The master bedroom takes the west front but is protected by a balcony and a deep chajja, so it gets the view and the evening light without the raw heat. The second bedroom sits at the rear over the kitchen, catching the cooler east air. A small family lounge or study nook beside the stair uses the leftover central space - a small luxury on a narrow plan.

Space	Approx size	Notes
Master bedroom	13 x 12 ft	West, shaded by balcony + chajja; attached bath
Balcony	12 x 4 ft	Shades the living room below; the west buffer
Bedroom 2	10 x 11 ft	East rear, cool morning light
Shared bath	5 x 7 ft	Off the landing
Family nook	8 x 8 ft	Opens toward the stair top-light

Vaastu Notes for a West Entry

A west entry is fully workable in Vaastu; it is treated as adaptable rather than a compromise. The key is where the heavy and light functions sit, not the entry direction itself.

Element	Direction here	Rating
Main entry	West	Adaptable - acceptable, place the door in the north-west portion of the west wall
Kitchen	South-east preferred; here east/rear	Good - shift the hob to the south-east corner of the kitchen
Master bedroom	South-west (upper)	Excellent - the ideal Vaastu position
Toilets	North-west / west	Acceptable - keeps the north-east clear
Water storage / utility	East rear	Good - underground tank to the north-east if possible
Staircase	South	Good - clockwise rise

The single most useful Vaastu adaptation on a west plot: keep the north-east corner light and open - a window, the entry-side planter or the stair light - and load the south and west with the heavier mass (parking, stair, master suite). That balances the plan the way a north or east entry would naturally.

FAR and Built-Up

Floor	Built-up (approx)	Contains
Ground	600 sq ft	Living, dining, kitchen, study, toilet, stair
First	550 sq ft	Two bedrooms, two baths, family nook, balcony
Total	1,150 sq ft	FAR near 1.45 on the 800 sqft plot

Cost Estimate - Indicative

For about 1,150 sq ft built-up at composite-zone 2026 rates:

Tier	Per sq ft (Rs)	Total (Rs Lakh)	Includes
Basic	1,900	21.9	Standard finishes, vitrified tile, painted render, basic joinery
Recommended	2,250	25.9	Better sanitaryware, wood-batten west screen, deep chajjas, ceiling fans zoned
Premium	2,600	29.9	Solar water, UPVC windows, kitchen and wardrobe joinery, terrace waterproofing plus

The west-heat features - deep chajjas, the balcony overhang and a light batten screen - add very little to the cost and are the best rupees you can spend on this plot. Estimate your own with the on-site cost tools before you commit.

Who It Suits

This plan is for the family that has bought a narrow, affordable west plot and been told it is a poor buy. It is not. With the living space set back, the bedrooms lifted and shaded, and the services stacked along the west and south as a heat buffer, a 20 x 40 ft west site becomes a calm, cross-ventilated 2 BHK that stays livable through a composite-zone summer - without a big budget and without leaning on air-conditioning.

A note on everything above: setbacks, FAR, costs and Vaastu positions here are typical and illustrative. They vary with your city bye-laws, plot, soil and budget. Confirm the buildable envelope and the structure with a licensed architect and structural engineer, and the approvals with your local sanctioning authority, before you build.