Buying a plot vs buying a built house

Assuming no financing on either path, the transfer-tax side of buying a Rs 10,000,000 plot and buying a Rs 10,000,000built house is identical — stamp duty, registration fee, and the 236K advance tax apply to the transaction value, not to what's standing on the land. The real difference is everything that happens after the transfer.

Transfer-side cost (Punjab, filer, Rs 10,000,000 value)	Amount
Stamp duty	Rs 100,000
Registration fee	Rs 100,000
Town tax	Rs 100,000
Advance tax (236K, buyer)	Rs 300,000
Buyer total, either way	Rs 600,000

Where the paths actually diverge

Plot + build: total spend depends on construction tier and quality control you can (or can't) exercise — see the grey structure vs turnkey comparison. Bylaw limits on covered area and setbacks also cap what you can build — check the Plot Size & Covered Area Planner.
Built house: immediate possession, no construction-timeline risk, but the seller's pricing already bakes in whatever build quality and age the structure has — harder to verify than a fresh build.
Rental yield: a built house can be rented out immediately; a plot earns nothing until construction finishes. See the Rental Yield Calculator.

Run your own property value and province through the Property Transfer Total Cost Calculator, and estimate a fresh build with the Construction Cost Calculator.