In the browser · plan, 3D and estimate
Draw it by hand. Or just say it.
One House Studio opens the plan the assistant drew in your browser. Drag a wall or type the change; the 3D view and the estimate update as you work.
Swap the kitchen and the dining, keep the bath where it is
- Furnish every room
- Check Vastu
- Reduce the cost
40 × 60 ft plot · ground floor of two · every number in the estimate is counted off this drawing
01 · By hand
Drag a wall. The rooms on both sides follow.
Split a room, merge two, move a door so it swings clear, put a window on an outside wall, drop in a bed and see whether it fits. Every move is checked as you make it: nothing overlaps, every room keeps a door, the plate stays inside the setbacks — and every move can be undone.
Selected wall · drag, or type a number
02 · By asking
Type the change instead.
Type it the way you would say it to a draughtsman — “kitchen thoda bada karo”, “make the two bedrooms equal”, “east-facing entrance”. The assistant edits the plan with the same tools you have on screen, so what comes back is a real change — checked, costed, undoable — not a picture of one. The common requests are one tap.
kitchen thoda bada karo, bedroom 2 se le lo
Widened the kitchen by two feet, taken from Bedroom 2. Three rooms change:
- Kitchen
- 8′ × 9′
- 10′ × 9′
- Store
- 8′ × 5′
- 10′ × 5′
- Bedroom 2
- 11′ × 14′
- 9′ × 14′
Estimate+₹18,400
- Furnish every room
- Fix the circulation
- Check daylight
- Check Vastu
- Reduce the cost
03 · In 3D
See it standing up.
Every plan carries a 3D model. Walk the interior room by room, look at the front from the street, read a plan without knowing how to read a plan. Rendered views of the outside and the rooms, when you ask for them, are made from this same model.
Cutaway · ground floor of a 40 × 60 ft plot · drawn from the same rooms as the plan
04 · In rupees
Costed as you go.
Steel, cement, bricks, sand, aggregate, labour and finishes — counted off the drawing and priced on a rate card for your region. Change a wall and the difference shows before you let go of it. Finish grade changes the rates; the geometry changes the quantities.
Estimate · live
- Bihar
- Jharkhand
- East UP
- Steel
- 3,072 kg
- ₹1,99,680
- Cement
- 307 bags
- ₹1,16,660
- Bricks
- 14,050 nos
- +₹4,800
- Sand
- 922 cft
- ₹50,710
- Aggregate
- 768 cft
- ₹46,080
- Labour
- 768 sq ft
- ₹2,30,400
- Finishes
- 768 sq ft
- ₹4,99,200
Total · 768 sq ft
₹12.6 lakh
₹1,634 / sq ft · indicative
This change
+₹4,800
Bihar rate card · v2026.3 · GST shown separately
05 · By the rules
Checked against the bye-laws, clause by clause.
Setbacks, ground coverage, floor-area ratio, minimum room sizes, daylight, stair geometry — each test cites the clause it comes from. The Studio does not sign the drawing — a registered engineer or architect does — but it hands them one with the checks already run.
- passesSetbacks5 ft front · 3 ft sides · 3 ft rearBihar Bye-laws 2014 · cl. 21
- passesGround coverage64% of 70% allowedBihar Bye-laws 2014 · cl. 19
- passesFloor-area ratio0.64 of 1.75Bihar Bye-laws 2014 · cl. 19
- passesRoom minimumsAll rooms at or aboveNBC 2016 · Part 3
- needs attentionDaylight · Bedroom 2Window 8% of floor — needs 10%NBC 2016 · Part 3
- passesStairTread 10″ · riser 6½″NBC 2016 · Part 4
Fix it: widen the window to 4 ft · or ask the assistant
06 · Export
Finish with the set.
A PDF your contractor quotes from and a DXF your architect opens. Compare any two revisions side by side before you choose. Finalise, and a fresh set is made from the plan as it stands.
- 01Floor plansone sheet per storey, dimensioned
- 023D cutawayone per floor, furniture placed
- 03Front elevationas seen from the road
- 04Area statementplot · plate · built-up · coverage
- 05Bill of quantitiesmaterials, labour, finishes, GST
- 06DXFfor your architect’s software
Who it is for
Homeowner, contractor, architect: the same Studio.
Homeowner
On a phone, before the contractor comes. Try the open kitchen, check the Vastu, see what the second floor adds — and walk in with a drawing instead of a description.
Contractor · mason
In front of the client. Make the change they are asking for while they watch, and leave with an updated drawing and quantities the same visit.
Architect · draughtsman
A first pass you can defend, then your own hands on it. Export DXF to finish in your own tools, with the compliance checks already run.
Launch list
The Studio opens with the first plans.
Leave your number and your plot size, and we message you the day it opens.