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.
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.
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 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.
The four requests that come up most often, and the concrete answer to each one.
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 offerLocal 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 AdsA 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 offerMany 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 offerThe neighbourhoods, business parks and towns the enquiries most often come from.
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.
A simple, transparent process in 4 steps, from the first audit to going live
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.
We create a bespoke mockup that you approve before any development starts. Modern, responsive design, aligned with your brand identity. Unlimited revisions included.
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.
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.
Three delivered projects, with their figures. The detail of each one is in our case studies.
Concrete commitments, written into the quote. No nasty surprises.
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.
The price on the quote is the final price. No hidden costs, no surprises. You know exactly what you are paying.
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.
After delivery we stay beside you for 30 days, for any change, question or adjustment. We reply within 24 hours.
Everything you need to know before you start your web project
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.
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.
A website that brings in enquiries, not just a shop window
landing page €490, brochure site €89002Campaigns that cost less than they bring in
on request03Be found on Google, and quoted by AI
from €500 a month04Every enquiry tracked, followed up and turned into a customer
on requestA web agency in Hauts-de-Seine and across Île-de-France

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