How Much Does It Cost to Sell Your Home? Expenses and Procedures Explained

If you’re thinking about selling your property, one of the first questions that comes to mind is: How much will it cost me to sell my home?
Selling a property involves a series of mandatory expenses, taxes, and procedures that are important to know in advance to avoid surprises.

In this guide, we explain clearly and with up-to-date information the real costs of selling a flat in Castelldefels in 2025, as well as the steps to do it quickly, legally, and profitably.

Main Expenses When Selling a Flat in Castelldefels

1. Municipal Capital Gains Tax (Impuesto sobre el Incremento de Valor de los Terrenos de Naturaleza Urbana)

What is it?
A municipal tax that applies to the increase in the value of the land from the time you bought the property until you sell it.

Who pays it?
The seller.

How much does it cost?
It depends on the years of ownership and the increase in the land’s value. It can be calculated using the objective method or the real method, applying whichever is more favorable for the taxpayer.
Each town council sets its own coefficients, and the calculation can cover up to a maximum of 20 years.

2. Notary and Agency Fees (Mortgage Cancellation)

If your home has a mortgage, you must cancel it officially before a notary and register the cancellation, as well as remove any other registered charges.

Approximate cost: between €900 and €1,200.

This is a mandatory step to register the sale in the Property Registry free of charges.

3. Mandatory Certificates

Energy Performance Certificate (EPC): Required to list your flat on real estate portals.
Price: between €60 and €150 (valid and up to date).
Occupancy Certificate: Required to sell.
Price: between €80 and €150 (valid and up to date).

4. Personal Income Tax (IRPF – Capital Gains Tax)

If you sell for more than the purchase price, you must declare the profit in your annual income tax return.

Tax rate: Between 19% and 26% on the net gain.

There are some exemptions or deductions if it’s your main residence.

5. Real Estate Agency Fees in Castelldefels

How much does an agency charge to sell a flat in Castelldefels?
On average, fees range between 3% and 5% of the sale price, plus VAT.
For example, if you sell your flat for €350,000, you’ll pay between €10,500 and €17,500.

A good agency will provide:

Professional property valuation
High-quality photo report and promotion on top property portals
Management of qualified viewings
Negotiation and legal closing
Document control and verification
Contract management and guidance

6. Mandatory Documentation to Be Delivered to the Buyer

The seller must provide the buyer with the following legal documents:

Updated land registry report (nota simple)
Energy performance certificate
Occupancy certificate (if applicable)
Latest property tax (IBI) receipt and record of charges
Certificate confirming community fees are up to date
Information on existing rental contracts (if any)
Proof of notification to the administration of pre-emption rights (if applicable)
Large property owner declaration (if applicable)
Information about whether the property is in a “stressed area” (if applicable)

Step-by-Step Process to Sell a Flat

Gather all required documents: deed, ID, EPC, occupancy certificate, receipts, and verify charges.
Set a realistic selling price: base it on a professional valuation with local market data from Castelldefels.
Advertise and promote your flat: make sure it reaches real, qualified buyers.
Sign the deposit contract (arras): it’s crucial to fully understand what you’re signing and its legal implications.
Prepare the sales deed before a notary.
Hand over the keys and finalize payment.