20×30 House Plan in Bengaluru: 2BHK, G+1 Rental Options & BBMP Rules (2025–26)
A 20×30 plot (600 sq ft) is Bengaluru's smallest widely available residential plot size — found across BTM Layout, Banashankari 4th Stage, Electronic City, Rajajinagar, and dozens of other localities. Small doesn't mean limited: with smart design, you can fit a comfortable 2BHK, an owner + rental G+1, or even three compact units. Here's everything you need to know.
Understanding Your 20×30 Plot: What You Actually Get
Before discussing floor plans, let's be clear about what a 20×30 plot actually yields after mandatory setbacks.
How we calculate buildable area: BBMP requires a 3 m (approximately 10 ft) front setback on a 20×30 plot. This leaves a 20 ft × 20 ft (400 sq ft) buildable footprint. No rear or side setbacks are required at this plot size. Multiplied by 2 floors = 800 sq ft total built-up (excluding staircase if G+1 design uses internal stairs).
BBMP Rules for 20×30 Plots
| Parameter | Rule | Notes |
|---|---|---|
| Front Setback | 3.0 metres (10 ft) | Mandatory on all plots; measured from boundary to wall |
| Rear Setback | Nil | Not required for plots ≤600 sq ft |
| Side Setback | Nil | Semi-detached construction allowed |
| Maximum Floors | G+1 | No G+2 on 600 sq ft plots |
| FAR (Floor Area Ratio) | 2.25 | Total 1,350 sq ft max, but G+1 limits you to ~800 sq ft |
| Car Parking | Not mandatory at 600 sq ft | Can be carved from ground if road width allows |
| Plan Approval Required? | Yes — BBMP plan sanction | Ward depends on locality |
Corner plots: If your 20×30 plot is a corner plot, the corner side also requires a 1.5 m setback. This reduces your buildable area to approximately 18.5 ft × 18.5 ft = 342 sq ft per floor. Get corner plot status confirmed before finalising your design.
Floor Plan Options for 20×30 (600 sq ft)
Based on 50+ projects we've completed on 20×30 plots across South Bengaluru, here are the most-requested layout configurations:
Vastu-Compliant 20×30 Floor Plans
On a 20×30 plot with only 400 sq ft of buildable area, not every Vastu prescription can be perfectly followed — but the most impactful ones can always be honoured.
Priority Vastu Rules for 20×30 Plots
- Entrance direction: This is non-negotiable. East entrance for east-facing, north entrance for north-facing. Don't compromise on this.
- Kitchen in the SE corner: Even on a small plot, SE placement is achievable with careful room arrangement.
- Master bedroom in the SW: The heaviest room (structurally and symbolically) should always go in the SW corner.
- Keep NE open: Even a small puja shelf or open balcony in the NE satisfies this requirement.
- Avoid toilets in NE: This is the most common Vastu error on small plots — kitchen can't fit so the bathroom goes NE. Avoid.
| Room | East-Facing Plot | North-Facing Plot | South-Facing Plot |
|---|---|---|---|
| Main Entrance | East centre | North centre | S-centre or SSE |
| Living / Hall | NE or E | N or NE | E or NE |
| Kitchen | SE corner | SE corner | SE corner |
| Master Bedroom | SW corner | SW corner | SW corner |
| Bathroom | NW or W | NW or W | NW or W |
| Puja (if included) | NE corner or E wall | NE corner | NE corner |
Construction Cost Breakdown (20×30 G+1)
| Component | Basic (₹1,800/sq ft) | Standard (₹2,300/sq ft) | Premium (₹3,000/sq ft) |
|---|---|---|---|
| Civil Structure (800 sq ft) | ₹7.5–₹8 L | ₹9.5–₹10.5 L | ₹13–₹14 L |
| Flooring (tiles/marble) | ₹1–₹1.2 L | ₹1.5–₹2 L | ₹3–₹4 L |
| Electrical + Plumbing | ₹1.2–₹1.5 L | ₹1.5–₹2 L | ₹2.5–₹3 L |
| Doors + Windows | ₹80K–₹1 L | ₹1.2–₹1.6 L | ₹2–₹2.5 L |
| Painting | ₹40–₹60K | ₹60K–₹1 L | ₹1–₹1.5 L |
| Kitchen + Woodwork | ₹80K–₹1.2 L | ₹1.5–₹2 L | ₹3–₹4 L |
| Total Build Cost | ₹14–₹18 L | ₹18–₹24 L | ₹25–₹32 L |
| Architect + BBMP fees | ₹1–₹1.5 L | ₹1–₹1.5 L | ₹1.5–₹2 L |
| Total Project Cost | ₹15–₹20 L | ₹19–₹26 L | ₹27–₹34 L |
20×30 Plot Localities in South Bengaluru
Small plots are common across many South Bengaluru localities. Here's a locality-specific snapshot:
| Locality | Typical 20×30 Land Price | 1BHK Rental (1st Floor) | Common Configuration |
|---|---|---|---|
| BTM Layout 1st Stage | ₹60–₹90 L/plot | ₹13,000–₹18,000 | Owner GF + 1BHK rental FF |
| Banashankari 4th Stage | ₹40–₹65 L/plot | ₹11,000–₹15,000 | 2BHK GF only or G+1 duplex |
| Electronic City Phase 2 | ₹30–₹50 L/plot | ₹12,000–₹16,000 | 2×1RK rental (both floors) |
| Bommasandra / Hebbagodi | ₹20–₹35 L/plot | ₹9,000–₹13,000 | Full rental 1RK×2 |
| JP Nagar 7th Phase | ₹55–₹80 L/plot | ₹12,000–₹17,000 | Owner GF + rental FF |
Have a 20×30 Plot?
We design 20×30 floor plans from ₹10,000. Tell us your locality, facing, and goal — we'll suggest the best layout in your free consultation.
💬 WhatsApp for Free Consultation10 Design Tips for Small 20×30 Plots
- Use an external staircase if building G+1 for rental — saves 50–60 sq ft of interior space per floor
- Full-height windows make rooms feel significantly larger — especially in east and north walls
- Combine living + dining into a single open space instead of separating them — gains 30–40 sq ft functionally
- Sliding doors on bathrooms save swing space in tight corridors
- High ceilings (10–11 ft instead of standard 9 ft) dramatically increase the sense of space at minimal extra cost
- Loft storage above the kitchen compensates for the lack of a storeroom
- Utility area on terrace (washing/drying) if G+1 — frees up ground floor from utility clutter
- Light-coloured finishes throughout — cream, off-white, light grey — visually expand spaces
- Open kitchen facing the living area creates a larger combined social zone
- No boundary wall on sides (if your neighbourhood allows) — adds visual spaciousness
Frequently Asked Questions
A 20×30 plot (600 sq ft) allows a maximum of G+1 under BBMP rules. After the mandatory 3 m front setback, you have approximately 400 sq ft of buildable area per floor — roughly 800 sq ft total. You can fit a compact 2BHK on the ground floor, or an owner unit on ground and a rental unit on the first floor. No side or rear setbacks are required for this plot size.
For a 20×30 plot (up to 600 sq ft), BBMP rules require a front setback of 3 metres (approximately 10 feet). No rear or side setbacks are required for plots in this size category under standard residential zoning. If your plot is a corner plot, the corner side also requires a 1.5 m setback — confirm this before finalising your design.
For a 20×30 plot, prioritise: (1) correct entrance direction for your plot facing — east for east-facing, north for north-facing; (2) kitchen in the southeast; (3) master bedroom in the southwest corner; (4) keep the northeast corner open or use it for a puja space. With only 400 sq ft per floor, compromises are inevitable — but the critical Vastu zones can always be honoured.
A 20×30 G+1 (approximately 800 sq ft built-up) costs ₹14–₹18 lakhs for basic construction, ₹18–₹24 lakhs for standard quality, and ₹25–₹32 lakhs for premium finishes. Add ₹1–₹1.5 lakhs for architect and BBMP approval fees. Total project cost typically ranges from ₹16–₹26 lakhs depending on finish quality.
Yes — a G+1 on a 20×30 plot is commonly designed as two independent units. Each floor has approximately 380–400 sq ft of carpet area. In South Bengaluru localities like BTM Layout, Electronic City, and Banashankari, 1RK or compact 1BHK units on 20×30 G+1 plots rent for ₹8,000–₹14,000/month — generating ₹16,000–₹28,000/month in total rental income.