Key takeaways
Ready-to-move homes let you inspect the actual unit and move in quickly; under-construction homes may cost less upfront.
GST applies to under-construction homes but generally not to completed homes sold after the completion certificate.
Delay risk, rent overlap and pre-EMI interest can erase the price advantage of an under-construction home.
Check RERA registration, construction progress and the builder's record before booking off-plan.

One of the first choices a buyer makes is whether to buy a finished home or book one that is still being built. Each has real advantages and real risks. The right choice depends on your timeline, your cash flow and your comfort with uncertainty.

Side-by-side comparison

Factor	Ready-to-move	Under-construction
What you see	The actual home	Plans, sample flat and site
Possession	Immediate or soon	Future date, may be delayed
Price	Usually higher	Often lower, especially early
GST	Generally not applicable after completion certificate	Applicable on the construction-linked price
Rent while waiting	None	You may pay rent and EMI together
Payment	Mostly upfront with a loan	Staged as per payment plan
Choice of units	Limited to what is left	Wider choice early on
Tax on interest	Interest deductions (old regime) start immediately	Pre-construction interest deferred

Advantages of ready-to-move homes

What you see is what you get. You can check light, ventilation, seepage, noise and the actual neighbours.
No delay risk. You avoid the most common complaint in Indian real estate.
No overlap of rent and EMI.
Usually no GST if the sale happens after the completion certificate has been issued. Read our GST on property guide.

What to check: the occupancy certificate, the completion certificate, transfer of maintenance to the residents' body and any dues. See occupancy and completion certificates explained.

Advantages of under-construction homes

Lower entry price in many projects, especially at launch.
Staggered payments linked to construction stages.
Better choice of floor, facing and layout.
New construction with current specifications.

The hidden costs of waiting

The price advantage can disappear if possession is delayed:

Rent overlap. If you pay rent and EMI for two extra years, add that cost.
Pre-EMI interest. Interest on disbursed amounts during construction is a real cost.
GST on the construction-linked price.
Price escalation clauses in some agreements.

Do the arithmetic with a realistic delay, not the brochure date.

Checks before booking an under-construction home

RERA registration and the declared completion date on the state RERA website.
Quarterly progress updates filed on RERA.
Approved plans and whether the unit you are booking matches them.
Builder's track record on past projects. See how to check a builder's track record.
Agreement for sale terms on delay compensation, cancellation and specifications.
Payment plan linked to actual construction milestones rather than time.
Lender approval of the project, which suggests the bank's legal team has reviewed it.

Which should you choose?

Choose ready-to-move if you need to move soon, cannot handle rent and EMI together, or want certainty. Consider under-construction if you have time, a stable rental arrangement, a strong builder with a good record and you are buying early enough for the price gap to matter.

If possession is delayed after you book, read builder delayed possession: your options.

Frequently asked questions

Is GST payable on ready-to-move flats?

GST is generally not payable on the sale of a completed property where the completion certificate has been issued before the sale. It applies to under-construction properties.

Are under-construction flats always cheaper?

Often, but not always. Once you add GST, rent during construction, pre-EMI interest and delay risk, the total cost can be similar to or higher than a ready home.

What should I check before booking an under-construction flat?

Check RERA registration, approved plans, construction progress updates, the builder's track record, the agreement for sale and whether major lenders have approved the project.

Can I claim tax benefits on an under-construction home loan?

Under the old regime, interest paid during construction has typically been deductible in instalments after completion. Check current tax law with an adviser.

Related HomeAcross guides

Official sources and further reading

This guide is general information, not legal, tax or financial advice. Rules, rates and procedures change; confirm current requirements with the relevant authority or a qualified professional before you act. Read our editorial policy.

Ready-to-Move vs Under-Construction Homes: Pros, Cons and Checks

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