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One House Plan

Floor plan · 3D · cost estimate

Your house, drawn to scale. Costed from the drawing.

Say what you want to build — in a WhatsApp message, or by moving a wall with your finger. One House Plan draws it to scale, shows it in 3D, and estimates what it will cost, re-pricing every change as you make it.

Join the launch listSee the Studio
Plan · to scale
LivingBedroom 1Bedroom 2KitchenStore
3D · cutaway
Estimate · counted
Steel
3,072 kg
Cement
307 bags
Bricks
14,050 nos
Sand
922 cft
Aggregate
768 cft

Total · 768 sq ft

₹12.6 lakh

₹1,634 / sq ft · indicative

Three ways in

One drawing. Work on it where you are.

The plan that arrives in your chat and the one you open in the Studio are the same object. Change it in either place and the 3D and the cost follow.

  1. Launching soon

    01 · On WhatsApp

    One House Plan

    Send your plot size in whatever unit you use, and say what you want. The assistant draws a measured plan, changes it when you ask, and answers questions about the design so far.

  2. Launching soon

    02 · In your browser

    One House Studio

    Open the same plan in your browser. Drag a wall or type “kitchen thoda bada karo”, and the 3D view and the estimate update with the change.

  3. PDF · DXF

    03 · On paper

    The drawing set

    Plans for every floor, a 3D cutaway, the front elevation and a bill of quantities, as one PDF, with a DXF for your architect. What a mason builds from and a contractor quotes from.

Language of the conversation
10:06

One House Plan

AI assistant · on WhatsApp

  1. 30 x 40 ka plot hai, 3 bhk chahiye, east facing

    10:02

  2. Namaste 🙏 30 × 40 ft — 1,200 sq ft — sadak east ki taraf. 3 bedroom do floor mein baant deta hoon; sab neeche chahiye toh bata dijiye. Ground floor abhi bana raha hoon.

    10:02
  3. LivingBedroom 1Bedroom 2KitchenStore

    Ground floor. Do bedroom, kitchen peeche, aur seedhi first floor ke liye rakhi hai. Kuch hilana ho toh bataiye.

    10:03

  4. kitchen thoda bada karo, aur store hatao

    10:05

  5. Ho gaya — kitchen ab 8 × 14 ft hai, store usi mein mila diya. Ek deewar kam hui, toh estimate ₹4,100 kam. First floor banaayein?

    10:05

  6. abhi tak ke design mein kitna steel lagega?

    10:06

  7. Ground floor ke liye lagbhag 3,070 kg — 768 sq ft par 4 kg per sq ft. Studio mein kholiye: 3D mein ghoom kar dekhiye, har quantity saamne milegi.

    One House Studio mein kholiye →

    10:06
Type a message

AI assistant · WhatsApp and Studio

An assistant that knows your drawing.

The assistant works on your plan itself. Ask it in the chat or in the Studio, and the change is made on the drawing — checked, costed, undoable.

  • Draw from a sentence

    Plot size, facing, bedrooms, parking, Vastu — in whatever order you say them, in whatever language you write in. It answers in the same one.

  • Change it by talking

    “Kitchen ko peeche karo.” “Bedroom bada chahiye.” The plan is redrawn, checked and re-costed.

  • Answer questions about the design so far

    How much steel. Which room is short on daylight. What two storeys would cost. Each answer is read off your drawing as it stands.

  • Hand over to the Studio

    One tap opens the same plan in your browser, signed in. Work on it there, and the chat still knows what you did.

Be first

Leave your number. We message you the day it opens.

Tell us your plot size and what you want built; yours will be among the first drawings we make.

Or write to info@onehouseplan.com

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