From Madrid to the Costa Blanca
Tu Ventana Costa Blanca is the Benidorm office of Tu Ventana Madrid, not a franchise and not a new start-up. It is the same company, run by the same founder, who has over 30 years in the trade.
We speak English. Eduardo answers on WhatsApp, 9:00–20:00 Spain time (8:00–19:00 UK time), and replies within 24 hours.
- 138Google reviews at Tu Ventana Madrid
- 50,000windows installed by Tu Ventana
- over 30 yearsour founder’s time in the trade
- Own teamwe make and fit your windows: no subcontractors
- KömmerlingTu Ventana is in the official network
- NIF B06818421same company as Tu Ventana Madrid: TU VENTANA MADRID SL
Who we are
Tu Ventana Costa Blanca, the Benidorm office of Tu Ventana Madrid, makes and fits Kömmerling uPVC windows with its own team for English-speaking homeowners in 14 Costa Blanca towns. Tu Ventana Madrid has 138 Google reviews; its founder, Eduardo, has over 30 years in the trade and answers in English on WhatsApp.
A trade learned one window at a time
Eduardo has spent over 30 years in the window trade. It is a trade learned on site: measuring openings one by one. That is where you learn why two windows of the same size can behave so differently.
In 2018 he started the Tu Ventana brand in Madrid. In 2021 the business became a company, TU VENTANA MADRID SL, with the tax number (NIF) B06818421.
Tu Ventana Madrid did not grow through advertising slogans. It grew through clients who were happy enough to write about it. Today it has 138 Google reviews, and it is listed in Kömmerling’s official network.
What our founder learned in Madrid
The brand of the profile rarely decides whether a window works well. Three things do: measuring with care, choosing the right glass for each façade, and sealing the opening properly.
An expensive system fitted badly gives a mediocre result. A sensible system fitted well lasts for decades. That is why we never give a fixed price before we have measured.
It also means saying no. Small windows that do not face the sun may only need an entry-level system. If so, Eduardo will tell you, even if the quote ends up lower.
Where the work started: the Tu Ventana Madrid shop
These photos are of our Madrid shop. Our Costa Blanca base is an office in Benidorm (Alicante). We would rather say so than label a photo with the wrong town.
Why a Benidorm office
In 2026 the company opened an office in Benidorm, to serve the Costa Blanca from here rather than from Madrid. It is the same company, with the same NIF, not a franchise or a licensed partner.
The coast asks different questions from Madrid. Here the enemy is strong sun, salt air and sudden autumn storms, so we start with solar control glass, salt-resistant hardware and a triple-barrier seal.
Some owners here live abroad for part of the year, or all of it. So the work is organised for that. The survey is done in person with your key holder, and the written quote is explained in English. The whole process works without you here.
What is inside a uPVC window
The whole process in a minute and a half. You see how the profile is made, where the steel goes, how the corners are welded and how the glass goes in. This is what you cannot see once the window is on your wall.
Company facts
Every fact on this page, in one place, with where you can check it.
| Fact | Detail | Where to check it |
|---|---|---|
| Company | TU VENTANA MADRID SL | Legal notice on this website; Spanish companies register |
| Tax number (NIF) | B06818421 | Legal notice; BORME, the official companies gazette |
| Company incorporated | 2021 | Spanish companies register |
| Tu Ventana brand | In use since 2018 | The company’s own records |
| Founder | Eduardo, with over 30 years in the trade | The founder’s own career, not the age of the company |
| Google reviews | 138 reviews at Tu Ventana Madrid | Google listing of Tu Ventana Madrid |
| Kömmerling | Tu Ventana Madrid is a member of the official Kömmerling network | Kömmerling network locator |
| Windows installed | 50,000 | Company figure, Tu Ventana |
| Registered office | Av. de Roma, 11, 03503 Benidorm (Alicante) (no visits), opened in 2026 | Same company and NIF as Tu Ventana Madrid |
| Towns served | 14 towns from Alicante to Denia | Areas we cover |
| Languages | English and Spanish | Eduardo answers in English on WhatsApp, 9:00–20:00 Spain time (8:00–19:00 UK time) |
Facts last verified: 26 September 2026.
What is still new on the coast
Local reviews: most of our Google reviews are on the Tu Ventana Madrid listing. The Benidorm listing opened in 2026 and is starting to collect its own. We never present Madrid reviews as local ones.
How we work, and who fits your windows
Tu Ventana Costa Blanca, the Benidorm office of Tu Ventana Madrid, makes and fits Kömmerling uPVC windows for English-speaking owners in 14 Costa Blanca towns. Service is fully online: you ask for your quote on the website and deal with Eduardo on WhatsApp. The only visit is ours, to survey your home. Our own team fits your windows: we do not subcontract the fitting.
What a well-finished installation looks like
Jobs by our Madrid team, the same company as our Costa Blanca office: Kömmerling uPVC windows, doors and enclosures fitted by our own people.
Glazed galleryGlass roof on uPVC profiles 
Indoor poolEnclosure exposed to humidity and chlorine 
House with a gable windowThe apex glazed without a frame splitting the glass 
Office buildingWindows at height with solar control glass 
Arched windowProfile curved to measure from a template 
Facade renovationDark-finish frames on a brick facade 
Entrance doorDecorative panel with safety glass 
Window with shuttersLouvred shutters to match the white frame 
Glazed porchOpening sash and fixed panes
Talk to our founder, in English
Send the form with your town and the windows you want to replace. Eduardo replies in English on WhatsApp within 24 hours, 9:00–20:00 Spain time (8:00–19:00 UK time).
Eduardo answers in English on WhatsApp, 9:00–20:00 Spain time (8:00–19:00 UK time).
Questions about the company
How long has Tu Ventana been in business?
Our founder, Eduardo, has over 30 years in the trade. The Tu Ventana brand dates from 2018, and the company, TU VENTANA MADRID SL, was incorporated in 2021. The Benidorm office opened in 2026.
Is Tu Ventana Costa Blanca a franchise?
No. Tu Ventana Costa Blanca is the Benidorm office of Tu Ventana Madrid. Both are the same company, TU VENTANA MADRID SL, with the same NIF, B06818421.
Can I visit your office in Benidorm?
No. Av. de Roma, 11, 03503 Benidorm (Alicante) is our registered address and does not receive visitors. Everything is handled online and on WhatsApp, and we come to you: every quote starts with a survey at your property, with you or your key holder.
Are you an official Kömmerling installer?
Yes. Tu Ventana is in the official Kömmerling network, and you can check it on Kömmerling’s own locator, where the entry is under Tu Ventana Madrid. Tu Ventana Costa Blanca is the same company, with the same NIF.
Who will I deal with in English?
Eduardo, the founder. He answers on WhatsApp, 9:00–20:00 Spain time (8:00–19:00 UK time), and replies within 24 hours.