Boulogne-Billancourt, Hauts-de-Seine
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Web Agency in Boulogne-Billancourt
Website Design & SEO

The second largest town in Île-de-France by population, Boulogne-Billancourt is a major economic hub with a dense base of small businesses and startups. ConvertiLab works with businesses in Boulogne-Billancourt a few minutes from Rueil-Malmaison, in person or by video call, with a single point of contact: website design, local SEO and online advertising, at public prices, with a free mockup within 48 hours.

A reply within 24 hours, from the founder
Free mockup within 48 hours
4.5/5 (14 Trustpilot reviews)
Delivered in 7 to 14 daysTwo rounds of revisions included150+ clients supportedPayment after approval
Your web agency near Boulogne-Billancourt

ConvertiLab is based in Rueil-Malmaison (92500) and works with businesses in Boulogne-Billancourt and across the Paris region, by video call or on site depending on your project.

06 16 47 72 45 Rueil-Malmaison, 92500, Île-de-France, France Google reviews: 4.6/5 from 10 reviews

Why do businesses in Boulogne-Billancourt need a website that works for them?

Media & broadcastingAutomotive & mobilityTech & startupsLuxury & designFinancial services

The second largest town in Île-de-France, Boulogne-Billancourt brings together media (TF1, CANAL+), the car industry (Renault) and tech startups. Its business owners work in a fiercely competitive setting where a digital presence decides whether you grow or stand still. The business districts of Le Trapèze and Le Point du Jour attract companies and customers with strong spending power.

The web market in Boulogne-Billancourt: what you need to know

The second largest town in Île-de-France, Boulogne-Billancourt is the French capital of media and communications: TF1 and a dense ecosystem of production companies, agencies and studios are based here, on the former Renault factory land reinvented around the île Seguin. Add to that thousands of shops and professional practices in the residential districts.

In a town where your prospects work for demanding brands, image counts double: a dated website rules you out on the spot. On the other hand, the volume of local searches in Boulogne is one of the highest in Hauts-de-Seine, so every place you gain on Google brings in more customers here than elsewhere.

Boulogne-Billancourt is the most populous town in the Hauts-de-Seine and one of the major employment hubs of western Paris, on the edge of Paris and the Bois de Boulogne. Television and communications groups have their offices on the quai du Point du Jour, pharmaceutical laboratories have settled along the Seine, the old Renault site has become the Trapèze quarter and the île Seguin is home to La Seine Musicale. The boulevard Jean-Jaurès and the streets of the centre are lined with shops, practices and restaurants. Searches for 'website design Boulogne', 'digital marketing Boulogne' and 'web agency for startups' reach us regularly from this town.

Our agency is based in Rueil-Malmaison, in the same department: we can therefore meet you at your offices in Boulogne or welcome you at the agency, as well as working by video call. You have a single point of contact from the first call to launch, public prices shown on the site, a written quote within 24 hours and the mock-up of your home page free within 48 hours. We work with shops, practices, startups and freelancers in Boulogne, as well as with businesses in Issy-les-Moulineaux, Sèvres and Saint-Cloud.

ConvertiLab is a web agency that works with businesses in Boulogne-Billancourt and across the whole Hauts-de-Seine department. We do not simply build good looking sites: we design conversion tools that turn your visitors into customers, with local SEO so that your prospects in Boulogne-Billancourt find you easily on Google.

What businesses in Boulogne-Billancourt ask us for

The four requests that come up most often, and the concrete answer to each one.

A website in Boulogne-Billancourt delivered in 7 to 14 days

A business website for 890 €, bespoke design, copy proofread with you, first year of hosting included. A redesign of an existing site for 690 €, a landing page for 490 €. Delivered in 7 to 14 days once we have your content, with the home page mock-up free within 48 hours.

See the business website offer

Digital marketing in Boulogne that measures every enquiry

Local SEO on your exact queries, Google Ads across Boulogne and western Paris, Meta ads by district or by interest: you follow the cost of every call and every form in a shared dashboard. The advertising account is opened in your own name and you keep access to it.

Discover Google Ads

A web agency for startups and young companies in Boulogne

A landing page for 490 € to test an offer before building the product, a business website for 890 € when you need to reassure your first customers and your recruits, a CRM so that no enquiry is lost. A landing page is delivered in 5 to 10 days.

See the landing page offer

Rebuild a Boulogne company's website without starting from scratch

Many shops and practices in Boulogne already have a site, often an old one, slow on mobile or impossible to edit. The 690 € redesign keeps the page addresses that matter, puts the redirects in place, rewrites the content with you and brings the site up to the standard of the competition in western Paris.

See the redesign offer

Where we work around Boulogne-Billancourt

The neighbourhoods, business parks and towns the enquiries most often come from.

  • Town centre and boulevard Jean-Jaurès
  • Marcel Sembat and Les Passages
  • Billancourt, the Trapèze and the île Seguin
  • Pont de Sèvres and Silly-Gallieni
  • République and Point du Jour
  • Parchamp-Albert Kahn and Rhin-et-Danube
  • Les Princes-Marmottan and Pont de Saint-Cloud
  • Issy-les-Moulineaux, Sèvres and Saint-Cloud

The sectors that drive the Boulogne-Billancourt economy

  • Media, communications and audiovisual production

    Production companies, agencies and freelancers in image and sound around the quai du Point du Jour: a fast portfolio, pages per service and a brief form that lands in your CRM.

  • Startups, consulting and business services

    The Trapèze and the offices in the centre are home to young companies, consultancies and B2B suppliers: a landing page to validate an offer, a restrained site to reassure customers and candidates.

  • Healthcare and professional practices

    Doctors, dentists, physiotherapists, psychologists and solicitors based around the Ambroise-Paré hospital and the town centre: online booking, pages per speciality, an accurate Google listing, notices that comply with the rules of your profession.

  • Shops, restaurants and property in the centre

    From the boulevard Jean-Jaurès to Marcel Sembat, customers search on their phone as they come out of the metro: opening hours, menu, bookings, available properties. A clear site, an up to date Google listing and recent reviews make the difference.

How we build your website in Boulogne-Billancourt

A simple, transparent process in 4 steps, from the first audit to going live

Step 01

Audit & Strategy

We look at your market in Boulogne-Billancourt, your competitors and your goals. A 30 minute call to understand your business and settle on the right digital strategy.

Step 02

Mockup & Design

We create a bespoke mockup that you approve before any development starts. Modern, responsive design, aligned with your brand identity. Unlimited revisions included.

Step 03

Development

Built with the fastest technologies available (Next.js, React). A very quick, secure, SEO ready site, with a Google PageSpeed score you can check on delivery.

Step 04

Delivery & Support

Going live, training on how to use it, and 30 days of support included. We stay available to develop your site as your needs change.

What do we commit to for your website in Boulogne-Billancourt?

Concrete commitments, written into the quote. No nasty surprises.

Two rounds of revisions included

You approve a mockup before the site goes live, then two rounds of revisions are included. You know what you are getting before you pay.

Fixed price, written into the quote

The price on the quote is the final price. No hidden costs, no surprises. You know exactly what you are paying.

Delivered in 7 to 14 days

Your brochure website is delivered in 7 to 14 days, and the deadline is written into the quote. For an online shop or an application, the deadline is set in the quote.

30 days of support included

After delivery we stay beside you for 30 days, for any change, question or adjustment. We reply within 24 hours.

Frequently asked questions about building a website in Boulogne-Billancourt

Everything you need to know before you start your web project

How much does a website cost in Boulogne-Billancourt?+
Landing page 490 €, business website 890 €, redesign 690 €, online shop from 1 490 €, a version in another language + 300 €. Prices are public and the same for everyone, with the first year of hosting included. Pay in 2 or 3 interest free instalments, or 39 € per month over 24 months for a business website. You can also get an online estimate and a written quote within 24 hours.
Are you a web agency in Boulogne-Billancourt?+
No, we are based in Rueil-Malmaison, also in the Hauts-de-Seine. Boulogne is a short distance away: we can come and meet you at your offices, welcome you at the agency or do everything by video call, whichever you prefer. One point of contact follows the project, and your site's local SEO depends not on the agency's address but on the work done on your pages and your Google listing.
How long does a business website take in Boulogne-Billancourt?+
A business website is delivered in 7 to 14 days once we have your copy and your photos. A landing page takes 5 to 10 days, an online shop 14 to 21 days. The home page mock-up is sent to you within 48 hours, before any commitment, and the written quote within 24 hours. A meeting in Boulogne or at the agency can be arranged to scope the project if you wish.
What does a digital marketing engagement in Boulogne include?+
It depends on your business and your budget: local SEO (Google listing, reviews, pages per service and per district, from 500 € per month over a minimum of six months), Google Ads campaigns on the queries your customers actually type, Meta ads targeted on Boulogne and the neighbouring towns, and a dashboard that tracks the cost of every enquiry. The advertising account is opened in your own name and you keep access to it.
Do you work with startups in Boulogne-Billancourt?+
Yes. A startup does not always need a full site to begin with: a landing page for 490 € is often enough to present the offer, collect the first sign ups and measure interest before investing more. When the business takes off, we move on to the business website, an English version for foreign partners (+ 300 €) and a CRM to track every contact. The prices stay the same as for our other clients.

Ready to start your project in Boulogne-Billancourt?

Join the 150+ clients we have supported and who trust us. Get a free, tailored quote within 24 hours. Brochure websites from €890, online shops from €1,490.

Payment only once you have approved the mockup. Spread payments available, no subscription.

Four pillars to find your customers in Boulogne-Billancourt

A website, online advertising, SEO and CRM: each pillar can be ordered on its own, with a price and a deadline written down before we start. We work remotely for Boulogne-Billancourt as we do for the whole of France, by video call.