Site Plan vs Floor Plan vs Working Drawing: What Each One Shows

Ask three people what a “house plan” is and you will get three different answers. One means the sheet showing where the building sits on the plot. Another means the layout of rooms. A third means the thick set of drawings a contractor actually builds from. All three are right, and all three are talking about different documents. When homeowners sit down with architects in Mysuru for the first time, this confusion is one of the most common reasons a project starts on the wrong foot.

The distinction matters because each drawing does a different job. The site plan speaks to the authorities. The floor plan speaks to you, the family who will live in the house. The working drawing speaks to the engineer, the mason and the electrician. Sign off on one without understanding the others and you can end up with a sanctioned plan that does not match what gets built, or a layout that nobody on site knows how to execute. This article walks through what each document shows, who reads it, and when it appears in your project.

The site plan: your building in its context

A site plan is a bird’s eye view of your entire plot, not just the building. It shows the plot boundaries with dimensions, the position of the proposed building within them, and the setbacks, the mandatory open spaces on each side. It also marks the access road and its width, the north direction, adjoining plots, and essentials such as the compound wall, gate, septic tank or sewage connection point and rainwater harvesting pit.

The primary audience for a site plan is not you. It is the sanctioning authority. Officials check it against the local byelaws: are the setbacks adequate for the road width and plot size, is the ground coverage within limits, does the access match the approved layout. A site plan that misstates a boundary or ignores a setback is the fastest route to a rejected file or, worse, a demolition notice later.

For a Mysuru plot, get the site plan drawn from an actual survey of the ground, not just from the plot documents. Plots in older layouts often measure slightly different from what the sale deed says, and a few inches on a 30x40 site can change what you are legally allowed to build. A proper design process therefore begins with a site visit and measurement, before any layout is sketched.

The floor plan: how you will actually live

The floor plan is the drawing most families pore over. It is a horizontal slice through the building, one sheet per floor, showing rooms and their sizes, wall positions, doors and windows, staircase, kitchen counters, toilet fixtures and often furniture placement to prove the room sizes work.

This is where your daily life gets decided. Whether the pooja room sits near the entrance, whether the kitchen gets morning light, whether the master bedroom wardrobe has space to open fully. It is also where design and budget meet: every extra square foot on the floor plan is a square foot you pay to build, so a tight layout is one of the most effective cost controls available to you. Our other guides on working with architects in Mysuru cover this design-to-budget conversation in more detail.

Read a floor plan slowly. Check dimensions against furniture you own. Check which way doors swing. Check that it matches the plan submitted for sanction, because they should be the same drawing. Revisions are cheap on paper and painful in brickwork, which is why Uniq Builders’ architectural design service includes working drawings for all floors with up to three rounds of revisions, alongside a choice of 3D elevations so you can see the exterior before committing to one.

The working drawing: instructions for the people building it

A floor plan tells you what the house will be. A working drawing tells the site team how to build it. This is a full set of technical sheets, and a serious residential project will have many:

• Centre line and excavation drawings, so the foundation is marked out correctly
• Structural drawings for footings, columns, beams and slabs, prepared from a soil test rather than guesswork
• Detailed floor plans with wall thicknesses, lintel and sill levels, and every dimension a mason needs
• Sections and elevations showing heights, parapets and staircase details
• Electrical layouts marking every point, switchboard and conduit run
• Plumbing and sanitary drawings for water supply, drainage and fixtures
• Door and window schedules listing sizes and specifications

If a dimension, level or specification is not on a working drawing, someone on site will decide it for you, usually in the moment and not always well. Ambiguity in drawings is where extra costs, disputes and rework are born. A complete working drawing set, paired with a written specification, is what makes a quoted rate meaningful, because both sides know exactly what is being built.

Which drawings you need, and when

The sequence for a typical Mysuru home runs like this. First, a measured site survey and soil test. Second, concept floor plans and elevations, refined with you over revisions. Third, the sanction set, which is the site plan plus floor plans, sections and elevations formatted to the authority’s requirements. Fourth, once sanction is in hand, the full working drawing set for construction.

You need all three document types, but you do not need to chase them from three different offices. Uniq Builders has delivered architecture, structural design and construction in-house since 2009, across 200+ projects in six cities including Mysuru, Bengaluru and Mandya. Every package, from Premium at ₹1,999/sq ft to Platinum at ₹2,999/sq ft (starting rates, terms and conditions apply), includes design and drawings, structural design with soil test, and plan sanction handled by the company with free assistance for government licensing work. Compare inclusions on the construction packages page; the final figure is confirmed after a free site visit.

To have your plot measured and the right set of drawings scoped for your project, book a free site visit and consultation or call +91 98449 93200.

Frequently asked questions

Is the sanctioned plan the same as the working drawing?

No. The sanction set proves to the authority that your building complies with byelaws, and it stays relatively simple. Working drawings are far more detailed and are produced for the construction team; they must match the sanctioned plan in footprint, setbacks and height, but they carry structural, electrical and plumbing information the sanction file never shows.

Can I start construction with only a floor plan?

You should not. A floor plan has no structural information, levels or service layouts, so the site team would be improvising the most expensive parts of your house. Wait for the sanctioned plan and the working drawing set; time spent on proper drawings is recovered many times over in avoided rework.

How many revisions of the floor plan are reasonable?

Two to three well-considered rounds usually settle a residential layout, provided you review each version carefully. Uniq Builders includes up to three rounds of revisions on working drawings for all floors, which is enough for most families when the first concept starts from a proper site measurement and a clear brief.