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Buying and selling in San Agustín del Guadalix · more than 35 years in the property sector

Sell your flat in San Agustín del Guadalix with no funny business.

The average asking price for homes for sale in San Agustín del Guadalix is €3,105/m² (−2.2% in a year). With Llavely we do everything for you: valuation, photos, virtual tour, screened buyers and viewings, and you pay 2.5% + VAT only if you sell, all inclusive and with no hidden costs.

2.5% + VAT, all inclusive: what you see is what you get
Lawyers with more than 35 years of experience, all the way to the notary
We do the viewings ourselves, only with screened buyers

What your home in San Agustín del Guadalix is worth

€3,105/m²average asking price

−2.2%over the last year

13,947inhabitants

Do the maths

Selling an 80 m² flat in San Agustín del Guadalix

At the average price, it would be worth around €248,000. This is what you would pay in total, VAT included and nothing else:

Calculate with your price

Llavely Sale · 2.5%, all inclusive: €7,502
Agency charging 5%, commission only: €15,004

Price: idealista, sale price report for September 2026 (average price in listings). Population: INE (Spanish National Statistics Institute), Annual Population Census at 1 January 2025.

Living and selling in San Agustín del Guadalix

San Agustín del Guadalix lies about 35 km north of Madrid, next to the A-1 motorway, in the northern metropolitan area. It has around 14,000 inhabitants and a traditional centre on a hill, crowned by the church of San Agustín, surrounded by neighbourhoods of terraced houses, low-rise flats and the Valdelagua estate of detached houses. Its natural surroundings include the River Guadalix, with the Charco del Hervidero beauty spot, and the La Retuerta aqueduct, built by the Canal de Isabel II water company.

It has no train: the connection with Madrid is via the A-1 and by intercity bus, with most routes leaving from the Plaza de Castilla transport hub. It usually appeals to families looking for a house with its own plot or a terraced house at a more moderate price than in Alcobendas or San Sebastián de los Reyes. Asking prices are in the middle range for the region, towards the upper end, and have fallen slightly over the last year.

A-1 motorway
Buses from Plaza de Castilla
Valdelagua residential estate
Charco del Hervidero (River Guadalix)

San Agustín del Guadalix is part of the Sierra Norte de Madrid.

Home for sale in San Agustín del Guadalix — Example image.

Areas and residential estates in San Agustín del Guadalix

Town centre
Valdelagua

How it works

Selling in San Agustín del Guadalix with Llavely

Ask for your free valuationWe give you a price range straight away; then we call you, see your home and fine-tune it. If it works for you, we sign the sale agreement. You pay 2.5% + VAT only if you sell.
We take care of everythingPhotos, video, floor plan and virtual tour; we find buyers, screen them and do the viewings. You don’t have to be on call.
Follow your sale and decideIn your portal you see every viewing with our opinion, and the offers, which you accept or reject. Your lawyers, included, stay with you all the way to the notary.

One price, all inclusive

Llavely Sale · all inclusive2.5% + VAT

Specialised lawyers, from start to finish
They go with you in person to the notary on signing day
Professional photos, video, floor plan and virtual tour
We do the viewings ourselves
Your private portal and a summary every week

That is the total, and you only pay it if you sell, on the day of signing at the notary. Free for the buyer.

Lawyer service Prices

Frequently asked questions about selling in San Agustín del Guadalix

What does a square metre cost in San Agustín del Guadalix?

The average asking price for homes for sale in San Agustín del Guadalix is €3,105/m² (−2.2% in a year), according to idealista, sale price report for September 2026. The average for the Comunidad de Madrid (Madrid region) is €5,065/m². This is the price asked in listings: the price of each home depends on the floor, its condition, the light and any extras.

How much does it cost to sell a flat in San Agustín del Guadalix with Llavely?

You pay nothing up front: only if you sell, on the day of signing at the notary. An 80 m² flat in San Agustín del Guadalix would be worth around €248,000: with Llavely Sale you would pay €7,502 in total, VAT included, with everything included: lawyers who go with you to the notary, photos, video, floor plan, virtual tour and the viewings, which we do ourselves. With an agency charging 5%, it would be around €15,004 in commission alone, and the lawyer and the photos are usually paid for separately. No hidden costs: what you see is what you get.

In Town centre and Valdelagua too?

Yes. Llavely covers all of San Agustín del Guadalix, including areas such as Town centre and Valdelagua.

Can I sell commercial premises, an office or a garage in San Agustín del Guadalix?

Yes. As well as flats, penthouses, houses and detached homes, you can sell commercial premises, offices, garages, storage rooms, industrial units and land, on the same terms.

What taxes do I pay when I sell in San Agustín del Guadalix?

Usually the plusvalía municipal (municipal capital gains tax), charged by the town council of San Agustín del Guadalix, and IRPF (Spanish income tax) on the gain, if there is one. With Llavely Sale, our lawyers calculate the applicable taxes for you before the price is set. We explain it in our guide to taxes when selling a flat.

Who shows the property in San Agustín del Guadalix?

We do. Viewings are included in the 2.5% and we only show your home to screened buyers whose ID we have checked. After each viewing, we tell you in your portal how it went.