Start with your use, not with the year of construction
Do you want to live there permanently, overwinter for a few months or mainly spend short holidays? Do you have a fixed moving date? And how much time do you want to spend on furnishing, follow-up and maintenance?
For someone who must soon leave a sold home, an uncertain completion date can be a major drawback. For someone retiring in two years, waiting can fit well. A buyer who enjoys renovating judges a dated kitchen differently from someone who wants to relax immediately on arrival.
Write down five firm conditions before the viewings. For example: no stairs in daily use, walking distance to amenities, a maximum total budget, usable from a certain month and no major renovation project. That prevents an attractive presentation from pushing practical limitations into the background.
The main differences side by side
| Topic | New-build | Existing home |
|---|---|---|
| What you assess | Plans, specifications and possibly a show home | The concrete home and current surroundings |
| Availability | Depends on construction and completion phase | Depends on transfer and agreements |
| Extra work | Often furnishing and finishing choices | Possibly renovation and replacement |
| Surroundings | May still be under development | Usually easier to judge on the spot |
| Cost research | Inclusions, options, taxes and completion | Condition, documents, charges and renovation |
| Biggest pitfall | Mistaking an artist's impression for a guarantee | Confusing visible charm with technical quality |
These are points of attention, not fixed properties. Immediately available new-build exists, and so do almost-new resale homes. Look at the concrete property and the transaction.
Compare the total investment
The asking price is the start of the comparison. Add taxes and transfer costs, but also everything needed to use the home the way you want.
With new-build you investigate, among other things, whether air conditioning, lighting, kitchen appliances, shower screens, garden, pool, parking space and storage are included. The word “included” must be found in the contractual documents, not only in a conversation.
With an existing home you include renovation, painting, furniture, appliances and possibly overdue maintenance. Have larger works costed before considering the home the cheaper option. A general estimate per square metre can be useful for a first exploration, but it is no substitute for a concrete quote.
Also set aside a buffer. The right size depends on the uncertainties in the file and must not be confused with a guaranteed cost percentage.

Which taxes differ at purchase?
For a usual first delivery of a new home, Spanish VAT generally applies; the AEAT mentions mostly 10% for regular homes, with special categories under different rules. A later delivery generally falls under transfer tax. Other charges or costs can also be relevant. The tax classification of the transaction is decisive, not just whether a listing calls the home “new”. See the AEAT explanation on VAT and transfer tax.
Have a calculation made for both homes based on the current regional rules and your situation. Do not use an old general percentage for the whole of Spain. That calculation belongs in the guide on purchase costs and taxes; this comparison is about the overall housing choice.
A comparison with fictitious amounts
Suppose home A is new-build priced at €320,000. In this worked example you reserve €25,000 for furnishing and finishing that is not included. Home B is existing, costs €300,000 and is expected to need €35,000 of renovation and furnishing.
Before taxes and other purchase costs you then arrive at €345,000 versus €335,000. The price difference is no longer €20,000 but €10,000. If temporary accommodation is needed for home B during the renovation, the difference shrinks further. If certain options for home A become more expensive, it can grow instead.
These amounts are purely illustrative. The lesson is to compare category by category and count nothing twice. Keep purchase tax, renovation budget and financing visibly separate, so you understand what makes an option more expensive.
A comparison with fictitious amounts
Home A — new-build
- Price: €320,000.
- Reserved for furnishing and finishes not included: €25,000.
- Before taxes and other purchase costs: €345,000.
- If certain options become more expensive, the difference grows.
Home B — existing
- Price: €300,000.
- Expected renovation and furnishing: €35,000.
- Before taxes and other purchase costs: €335,000.
- If temporary accommodation is needed during the renovation, the difference shrinks.
New-build: what do you check before reserving?
Ask which legal and technical documents are available for the current construction phase. Have the ownership situation, permits, payment structure and contract terms independently assessed, among other things. For payments during construction, the applicable protection of advance payments must also be investigated.
Check the finishing specification in detail. Which brands or equivalent alternatives are allowed? What does it say about surface areas, outdoor space and changes? A show home can display options that are not part of the base price. So have an overview made of the basic specification, chosen options and surcharge.
Read the payment schedule together with your financing plan. When must your own funds be available? When does a bank actually pay out? An expected mortgage is not the same as definitively available financing. Also read about bank guarantees for new-build in our buying guides.
Completion: plan room for inspection and repairs
An expected completion month is not a moving guarantee. Investigate what has been contractually agreed about delay, notification, documents and the moment you must accept.
Plan a technical completion inspection with a clear snag list. Test not only visible finishes; have relevant installations and connections assessed as well. Record in writing which points will be repaired, by whom and when. The precise possibilities around transfer and repair require legal advice in the concrete file.
Do not book your definitive move or irreversible arrangements purely on an optimistic schedule. Temporary accommodation and storage can cost money. Include that risk in your comparison with a home that is already ready for use.




