Renovation: Extra Costs? A Complete Guide to Managing Them

Are your renovation costs exceeding the budget? Discover strategies to manage unforeseen events, handle extra expenses, and evaluate financing options to complete the work without stress.

Published on Dec 04, 2025
Updated on Dec 04, 2025
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In Brief (TL;DR)

Learn how to handle unexpected events and cost increases during a renovation and what solutions are available to get additional funds.

Let’s explore how to manage these unforeseen events and what solutions exist to obtain the necessary funds to complete the project.

Explore different financing options, such as personal loans or renovation mortgages, to get the funds needed to cover unexpected expenses.

The devil is in the details. 👇 Keep reading to discover the critical steps and practical tips to avoid mistakes.

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Tackling a renovation is an exciting journey, but one of the most common concerns is unexpected cost increases. It’s not uncommon for the final amount charged by the contractor to exceed the initial estimate. This happens for several reasons, such as the discovery of hidden structural problems, the need for changes during the project, or an increase in material prices. Understanding the causes of these increases and knowing how to manage them is crucial to completing the project without stress and unpleasant surprises. Careful planning and knowledge of the legal and financial tools at your disposal are the keys to handling any unforeseen event with peace of mind.

This article provides a comprehensive guide to navigating the financial challenges of a renovation, offering practical solutions to prevent and manage extra costs. We will analyze the most common causes of increases, the contractual protections provided by Italian law, and the financing options available to cover unexpected expenses, with a special focus on the Italian cultural context, where renovation often combines tradition and innovation.

Person with a worried expression examines invoices and a construction project on a workbench.
Cost increases in a renovation are a common challenge. Discover how to handle unexpected events and complete your project without stress.

The Main Causes of Cost Increases

Renovation costs can escalate due to multiple factors, which are often difficult to predict. One of the most frequent causes is unforeseen site issues. Hidden problems, such as obsolete plumbing or electrical systems, structural cracks concealed by plaster, or the presence of materials that require special disposal like asbestos, often emerge only after work has begun. These elements cannot be identified during a simple inspection and require additional, unbudgeted interventions. Another significant cause is the variation in material prices. Events like international crises or market instability can cause a surge in the costs of raw materials such as cement, steel, or wood, directly impacting the final budget. Lastly, changes requested by the client during the project, i.e., modifications to the original plan, naturally lead to an adjustment in costs and delivery times.

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Prevention is Better Than Cure: The Planning Phase

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Effective management of renovation costs begins long before the work site opens. The key is detailed planning. The first step is to draft a clear and comprehensive procurement contract that specifies in detail the work to be performed, the materials to be used, the delivery times, and, most importantly, the price. It is advisable to define a “lump sum” price, which sets a total amount for the work, rather than a “unit price,” where the final cost depends on the actual quantities of work performed. Another crucial element is creating an emergency fund. Experts suggest setting aside an amount equal to 10-20% of the total budget to deal with unforeseen events which, as we’ve seen, are almost a certainty in any renovation. This approach allows you to manage extra expenses without compromising your cash flow or the continuity of the work.

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What to Do When Costs Escalate: Immediate Actions

When the contractor informs you of a cost increase, it’s crucial to act with a clear head. The first step is to request a detailed justification for the extra expenses, distinguishing between unforeseen work, requested changes, and material price hikes. Maintaining open and transparent communication with the company and the project manager is essential to finding shared solutions. Next, it’s crucial to review the procurement contract to check the clauses related to unforeseen events and price revisions. If the increase is substantial and jeopardizes the completion of the work, you can consider renegotiating some aspects of the project, perhaps by postponing non-essential finishes or choosing more affordable alternative materials. In extreme cases, if an agreement cannot be reached, you can consider early termination of the contract, paying for the work already completed according to the Progress Report (Stato Avanzamento Lavori – SAL).

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Italian law offers specific protections for both the client and the contractor in case of cost increases. The reference standard for private contracts is Article 1664 of the Italian Civil Code. This law states that if, due to unforeseeable circumstances, the cost of materials or labor increases or decreases by more than 10% of the total agreed price, both parties can request a price revision. The revision, however, applies only to the portion exceeding this 10% threshold. This mechanism aims to restore the economic balance of the contract, which has been altered by extraordinary events. It is important to note that the parties can include specific clauses in the contract to regulate price revisions differently or even exclude them for certain materials. In the absence of an agreement, the matter can be brought before a judge.

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Financial Solutions to Cover Extra Costs

If the emergency fund is not enough, there are several solutions to finance unexpected costs. One of the most common options is to request additional financing. If you already have a mortgage, you can discuss the possibility of obtaining extra cash with your bank. Alternatively, you can resort to a personal loan for renovation, which is generally quicker to obtain but has higher interest rates and lower maximum amounts, typically up to 50,000 or 60,000 euros. For larger projects, the best choice might be a renovation mortgage, which offers more favorable rates and longer repayment plans, using the property as collateral. Deciding between a mortgage or a personal loan depends on the size of the expense and your financial situation. For those buying a property to renovate, there is also the purchase and renovation mortgage, a single solution that covers both expenses. The funds can be disbursed in a lump sum or through progress payments (SAL).

The Italian Context: Tradition and Innovation

Renovating in Italy, and more broadly in the Mediterranean context, takes on a special meaning. It often means working on a historic building heritage, where traditional construction methods clash and merge with the needs of innovation and sustainability. Mediterranean homes were designed to meet specific climate needs, using local materials and techniques passed down through centuries, such as thick walls for thermal insulation and outdoor spaces like loggias and courtyards for microclimate control. Today, the challenge is to preserve this character while integrating modern technological solutions for energy efficiency, seismic safety, and living comfort. This dialogue between past and future can be a source of unforeseen costs, but also a unique opportunity to create homes that combine the charm of history with contemporary functionality, an added value typical of the Italian culture of living.

Conclusions

disegno di un ragazzo seduto a gambe incrociate con un laptop sulle gambe che trae le conclusioni di tutto quello che si è scritto finora

Cost increases in a renovation are a common occurrence, but they don’t have to become an insurmountable obstacle. The key to a successful project lies in meticulous planning, which includes a detailed procurement contract and setting up a contingency fund. It is essential to know your rights, protected by Article 1664 of the Italian Civil Code, which provides for price revision mechanisms in case of exceptional and unforeseeable increases. Maintaining a constructive dialogue with the contractor and the project manager allows for a collaborative approach to difficulties. If resources are insufficient, the market offers various financial solutions, from personal loans to renovation mortgages, to be carefully evaluated based on your needs. Approaching a renovation with awareness and preparation not only allows for effective budget management but also enables you to experience it as an opportunity to create a living space that fully reflects your desires, balancing respect for tradition with the drive for innovation.

Frequently Asked Questions

disegno di un ragazzo seduto con nuvolette di testo con dentro la parola FAQ
What can I do if the construction company asks for more money than the estimate?

If the company requests an increase, it’s crucial to check the procurement contract. The request is legitimate only in specific cases, such as for necessary and unforeseeable changes to complete the work to a professional standard, or for exceptional and unpredictable increases in the cost of materials or labor exceeding 10% of the agreed price. For changes you request, the company is entitled to extra compensation. It’s important to maintain open communication and document every agreement in writing.

How can I finance the extra costs of the renovation?

To cover unexpected expenses, you can consider several solutions. One option is to request additional funds from the bank that granted the renovation mortgage. Alternatively, you can consider a personal loan, which offers faster disbursement and less bureaucracy, although with generally higher interest rates and lower maximum amounts compared to a mortgage. Some credit institutions also offer specific products like salary-backed loans (Cessione del Quinto) for employees and pensioners.

Is it possible to prevent renovation costs from increasing?

Completely avoiding unforeseen events is difficult, but you can reduce the risks. Detailed planning with a qualified professional (architect, engineer) who prepares an executive project and a precise bill of quantities is crucial. Additionally, it’s advisable to include clear clauses in the contract on how to manage changes and to set aside a contingency fund, usually estimated at between 10% and 30% of the total budget, depending on the complexity of the work.

What are the most common unforeseen issues in a renovation?

During a renovation, problems not visible during the initial inspection can emerge. The most common include hidden structural issues (cracks, slabs that need reinforcing), old or non-compliant systems (lead pipes, non-compliant electrical wiring), the presence of hazardous materials like asbestos, or multiple layers of overlapping flooring to be removed. These technical surprises require unplanned interventions that can impact timelines and costs.

What are ‘change orders during construction’ and who pays for them?

‘Change orders during construction’ are modifications to the original project that become necessary during the work. They are distinguished as: agreed-upon changes (proposed by the contractor and approved by you), changes ordered by you (within the limit of one-sixth of the total price), and necessary changes (essential to perform the work to a professional standard). Changes you order or agree to are at your expense. For necessary changes, if no agreement is reached on the extra compensation, the decision is up to a judge.

Francesco Zinghinì

Electronic Engineer expert in Fintech systems. Founder of MutuiperlaCasa.com and developer of CRM systems for credit management. On TuttoSemplice, he applies his technical experience to analyze financial markets, mortgages, and insurance, helping users find optimal solutions with mathematical transparency.

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