Experts say buyers should therefore assess the two options across multiple financial factors before deciding which property fits their cash flow and time horizon.
Total cost, not just the property price
The first step is to calculate the all-in cost of buying the house.
Ankit Aggarwal, Director, Devika Group, a real estate developer, said the decision should depend on a buyer’s financial comfort, urgency and total cost of ownership, rather than only the difference in ticket prices.
Apart from the quoted property price, buyers should account for registration and other transaction costs, interiors, maintenance and financing expenses. An under-construction property may have a lower entry price, but the eventual financial outgo needs to be compared with that of a completed home.
How much money will you need upfront?
The cash-flow pattern can be very different between the two options.
An under-construction property can come with a milestone-linked payment plan, allowing the buyer to pay as construction progresses. This means the entire purchase amount does not necessarily have to be committed at the beginning.
Shravan Nawany, Director, Nawany Group, a Mumbai-based integrated real estate development, supply chain management, and technology enterprise, said this difference matters because a buyer’s capital is not locked up all at once under a properly structured milestone-linked plan.
A ready-to-move home, on the other hand, can require a substantially larger payment over a shorter period. Buyers should therefore compare the down payment, loan disbursement and monthly cash-flow requirement for both properties.
Will you continue paying rent while waiting?
For buyers who currently live in rented accommodation, the waiting period can materially change the calculation.
An under-construction home may require the buyer to continue paying rent until possession, while loan-related payments may also begin depending on the stage of disbursement and repayment structure.
Shashank Gupta, Director, RPS Group, an Indian real estate development company, said buyers should consider not just the price difference but also the rent and interest costs incurred while waiting for possession.
A delay can extend this period further, making the actual financial cost higher than what the original property-price comparison suggests.
Check the tax and transaction-cost difference
Taxes and other charges can also alter the final price paid by the buyer.
Gupta noted that a ready-to-move property with a completion certificate does not have the same GST outgo associated with an under-construction purchase.
Buyers should therefore compare the applicable GST, registration charges and other transaction-related costs before concluding that one property is cheaper.
These expenses should be included in the total acquisition cost rather than treated as an afterthought.
How much possession risk can you take?
RERA has strengthened the regulatory framework for homebuyers, but it has not eliminated construction delays.
Sudhir Patel, Director, Shyam Group, a real estate developer, said the price difference between under-construction and completed properties can still be around 15-20% in some cases, while RERA provisions have provided greater legal protection to buyers through mechanisms including timelines and escrow requirements.
However, Shashank Gupta pointed out that greater developer accountability after a delay does not remove the financial impact on a buyer who is waiting for possession.
Before booking an under-construction property, buyers should therefore check the project’s RERA registration, promised completion timeline and current construction progress.
Check the developer’s delivery record
The developer becomes an important part of the financial calculation when the house has not yet been completed.
Nawany said buyers should examine whether the project’s construction pace matches its filed completion timeline and look at how much of the developer’s previously launched projects have actually been delivered.
Sahil Verma, COO at Shray Projects, a real estate broking and advisory firm based in New Delhi, said an under-construction property can make financial sense when the developer has a strong track record, the project is in a high-growth location and the entry price adequately compensates for construction risk.
For buyers, this means the advertised discount should be considered alongside the execution risk rather than in isolation.
What is the location and holding period?
The final factor is what the buyer expects from the property over the period for which it will be held.
Shivam Agarwal, VP – Strategy, Sattva Group, a property development, management, and consulting organisation, said under-construction developments can offer early entry, phased payments and a wider choice of units, along with potential appreciation through the development cycle.
Location fundamentals also matter. Nawany said buyers entering a project early can potentially benefit when infrastructure such as a metro connection or improved connectivity develops later, although that outcome depends on the project and location.
For an investor, the calculation should therefore include the expected holding period, rental potential, financing cost and the underlying growth prospects of the location. For an end-user, immediate possession and the ability to use the property may carry greater financial relevance.
There is no single price-based formula for comparing an under-construction and a ready-to-move home.
A buyer should put the purchase price + taxes and charges + financing cost + rent during the waiting period + interiors and maintenance into the calculation. For an under-construction property, the buyer should additionally factor in the financial impact of a possible delay and assess the developer’s delivery record.