Renovation costs in Spain: where a renovation project's budget goes over

For a comprehensive renovation in the mid-range segment in Spain, renovation costs are indicatively between 600 and 1,000 euros per m², excluding VAT. In the higher segment on the Costa del Sol, featuring high-end finishes and installations, figures range from 1,000 to 1,800 euros per m² and up. For an investor, however, the cost per m² is not the core issue. The core issue is the likelihood of budget overruns, where they occur, and who bears the difference. This article explains how a renovation budget is structured, where it typically exceeds expectations in practice, and how that impacts a project's outcome.

Indicative renovation costs per m² in Spain

Prices per m² are primarily published by contractors and renovation companies, serving as an indication rather than a market standard. They vary significantly by region, the condition of the property, and the level of finish. The ranges below provide an order of magnitude for the Málaga region and the Costa del Sol in 2026. They exclude VAT, professional fees, and permit costs. Use them to verify a budget, not to draft one.

• Simple refurbishment without structural changes: approximately 450 to 600 euros per m²
• Comprehensive renovation in the mid-range segment: approximately 600 to 1,000 euros per m²
• Comprehensive renovation in the high-end segment with premium finishes: approximately 1,000 to 1,800 euros per m²
• Villas with new installations, outdoor areas, and swimming pools: project-specific, often exceeding this range

A quote that falls well below these ranges warrants extra attention. In practice, a low price per m² often goes hand-in-hand with a vague scope of work, leading to additional costs later on. Therefore, compare quotes based on the description, not the total amount. A budget that only lists a price per m² is not a budget.

How a renovation budget is structured

A useful budget breaks down costs into line items, making it clear where the largest amounts and greatest uncertainties lie. In a comprehensive renovation, structural work and installations are usually the heaviest items, while finishes offer the most room for choices—and thus for additional work. Additionally, there are costs that fall outside the construction contract but still come from the same budget. The items that belong in a complete budget are as follows.

• Demolition and waste removal
• Structural work, partition walls, and any necessary structural modifications
• Installations: electrical, plumbing, sewage, climate control, and home automation
• Finishing: flooring, tiling, kitchen, sanitary ware, joinery, and painting
• Outdoor areas, terraces, and swimming pool
• Architect and construction supervisor fees
• Permit fees and municipal building taxes
• VAT on construction costs
• Contingency budget

Where a renovation project budget goes over

Overruns rarely result from one major mistake. They arise from an accumulation of smaller deviations, each of which is explainable. With existing properties in Spain, the same causes recur time and again. If you know them, you can specifically ask whether a budget accounts for them. Below are the five causes that weigh most heavily in practice.

Hidden defects

Only after demolition does it become clear what lies behind walls and under floors. In older properties, this involves corroded pipes, moisture issues, weak structural elements, or asbestos-containing materials, known in Spain as uralita. These items can be partially estimated during purchase with a building survey, but never fully. A budget without a building survey is therefore an estimate with a large margin of error. A contingency fund covers some of this, but not everything.

Installations that do not meet current standards

In a comprehensive renovation, installations must comply with current Spanish building and installation standards. An electrical system that worked fine for years may still need to be completely replaced upon inspection. The same applies to sewage and the property's energy performance. These costs are predictable if investigated beforehand, and unpleasant if they are not. Therefore, ask whether the installations in the budget are included as replacements or as modifications.

Additional work due to design choices

During execution, there is often a tendency to upgrade the design because the market in the high-end segment demands a certain level of finish. Any change after work has started costs more than the same choice made beforehand. A contractor charges different rates for additional work than for the original specifications. Therefore, the design should be finalized before the first sledgehammer is swung. Changes made after that should be documented in writing, including the price.

Delays

Delays cost money, even if construction costs themselves do not rise. Fixed costs such as insurance, IBI, security, and community fees continue to accrue, and the moment of sale is pushed back. The biggest source of delay in Spain is the permit process, detailed in the article on building permits for a Spanish renovation project. Additionally, the availability of skilled workers and material lead times play a role. What a delay at the end of a project means is covered in the article on exit scenarios for a Spanish renovation project.

Material price increases

With a duration of a year or longer, material prices can rise between the quote and execution. A contractor with an open-price agreement passes that increase on. A fixed price, known in Spain as a precio cerrado, shifts that risk to the contractor but is usually offered with a premium. Which option is more suitable depends on the duration and market conditions. It is important that the choice is made consciously and is stated in the contract.

VAT and costs excluded from the price per m²

The price per m² quoted by contractors almost always excludes VAT (IVA). The standard rate in Spain is 21 percent, and whether this VAT can be reclaimed by a project company depends on the tax classification of the subsequent sale. Therefore, always include VAT as a cost item in your budget unless a Spanish advisor confirms that a refund is possible. In addition, architect and supervisor fees, along with permit costs, often total 6 to 10 percent of the construction sum. A budget that omits these items shows a margin that does not exist in reality.

A calculation example with a downside scenario

Consider a project with a purchase price of 1,200,000 euros including buyer's costs, a living area of 180 m², and a high-end renovation costing 1,300 euros per m². The expected sale price is 1,950,000 euros after a twelve-month term, with 5 percent selling costs. All amounts are indicative and serve solely to illustrate the mechanism. Past performance is no guarantee of future results. We assume a 50 percent profit share for the investor.

Base scenario

• Construction cost: 234,000 euros
• 21 percent VAT: 49,140 euros
• Fees and permits, 8 percent of construction cost: 18,720 euros
• Contingency budget, 10 percent of construction cost: 23,400 euros
• Fixed costs over twelve months: 18,000 euros
• Total investment including purchase: 1,543,260 euros
• Net sales proceeds: 1,852,500 euros
• Project result: 309,240 euros, of which an indicative 154,620 euros is for the investor

Adverse scenario 1: construction costs 18 percent higher and a four-month delay

• Overrun including VAT: 50,965 euros, of which 23,400 euros is covered by the contingency budget
• Additional fixed costs due to delays: 6,000 euros
• Project result: 275,675 euros, approximately 11 percent lower
• Investor share: indicative 137,837 euros

Adverse scenario 2: same as scenario 1, plus a 5 percent lower sale price

• Selling price: 1,852,500 euros, net 1,759,875 euros
• Project result: 183,050 euros, approximately 41 percent lower than the base scenario
• Investor share: indicative 91,525 euros

This example demonstrates two things. A construction cost overrun of nearly one-fifth impacts the result less severely than many investors expect, provided there is a realistic contingency fund. However, the combination of higher costs, delays, and a lower sale price hits the result hard, as the sale price is the largest item in the calculation. A well-substantiated budget is therefore essential, but a conservative sales assumption carries more weight. How these factors together determine the return is explained in the article on return on Spanish real estate.

How to assess renovation risk before you commit

As an investor, you do not carry out the renovation yourself, but you can assess whether the risk has been taken seriously. You do this by asking a limited number of targeted questions before making a commitment. The answers should be provided in writing and supported by underlying documentation. Which documents to request is detailed in the article on due diligence for a Spanish real estate project. The questions that carry the most weight regarding renovation costs are as follows.

• Is there a structural survey, and what is its date?
• Is the budget broken down by line item, and are the largest items supported by quotes?
• Does the contractor work with a fixed price or an open-book price?
• How large is the contingency budget, both as an amount and as a percentage of the construction costs?
• Is the contractor paid according to progress, based on verified payment schedules?
• Who bears the cost of an overrun exceeding the contingency budget, and is that stated in the agreement?

The last question is the most important. With profit sharing, you indirectly bear an overrun through a lower result. With a fixed fee, an overrun does not affect you initially, but it does if it becomes so large that the repayment is put under pressure. How the agreement regulates this is explained in the article on the investment agreement for a Spanish real estate project.

Common mistakes

Errors regarding renovation costs are rarely due to arithmetic. They lie in assumptions that are not explicitly stated and in items that are silently omitted. A budget can look balanced on paper and still present an overly optimistic picture. The errors we encounter most often are as follows.

• Comparing a price per m² without knowing what it includes
• Leaving VAT, professional fees, and permit costs out of the budget
• Not including a contingency budget, or including one that is less than 10 percent of the construction costs
• Changing the design during construction without a written agreement for additional work
• Expressing delays only in months and not in euros

Frequently asked questions

Below are the questions investors ask us most frequently about renovation costs for a Spanish project.

How large should the contingency fund be?

For a comprehensive renovation of existing buildings, 10 percent of the construction sum is a standard lower limit. For older properties without a full structural report, 15 percent is justifiable. A smaller amount may be appropriate for a simple refurbishment with a fixed price. More important than the percentage is that the item is clearly visible and not silently used to cover other costs.

Is a fixed price always better?

Not always. A fixed price shifts the risk of price increases to the contractor, but it is usually offered with a premium and only covers what is specified in the bill of quantities. Changes and hidden defects generally remain outside that price. A fixed price is therefore most valuable when the design is fully finalized. If there is significant uncertainty about the condition of the property, it offers less protection than it suggests.

How long does a full renovation take in Spain?

For a high-end property, the execution itself typically takes four to nine months, depending on the scale and the availability of skilled workers. Added to this is the period for design and permits, which in some municipalities takes longer than the construction itself. A realistic schedule accounts for both phases. Our projects generally run from six to eighteen months from purchase to sale.

Who monitors the progress of the renovation?

For renovations requiring a permit, a building supervisor is involved to monitor execution. For an investor, periodic reporting is also important, including photos, paid installments, and an up-to-date forecast of costs and scheduling. Ask in advance how often and in what format you will be informed. At Dutch Value, investors receive a report every quarter.

Does the renovation count toward the tax value of my position?

Your tax position depends on the structure of your participation, not on the renovation itself. With a fixed return, you are a creditor, and the tax treatment is covered in the article on interest income from Spain. With profit sharing, the treatment follows a different path. Have this reviewed for your specific situation by a tax advisor.

Next steps

Renovation costs in Spain can be accurately estimated, provided the budget is comprehensive, the contingency fund is realistic, and the sales assumption is conservative. A price per m² means little without the underlying breakdown. At Dutch Value, every project undergoes six preliminary assessments, including a cost review, and we carry out renovations using our own network of contractors. Would you like to see what a renovation budget looks like in a concrete project proposal? Schedule a personal appointment.

This article is general in nature. Past results and market developments offer no guarantee for the future.