Castorama Marketplace - new sales opportunity in the Home and Garden category

Castorama Poland is one of the most recognisable brands in the construction and interior design segment. For years, it has been accompanying Poles on renovations, DIY and home and garden arrangements. Now the chain has gone a step further and launched its own marketplace, which for the first time opens its doors to third-party sellers. This allows you to offer your products on a platform that is visited by hundreds of thousands of customers every day.

For companies in the Home, Garden and Construction sector, this is an unprecedented opportunity - unlike Allegro or Amazon, Castorama is not an anonymous portal with thousands of random offers. It is a place where users visit with a clear goal in mind: to buy renovation materials, furniture, lighting or garden accessories. The retailer does not have to fight for attention in a jungle of unconnected categories, because he goes directly to the customer, who already knows what he is looking for.

Importantly, the platform's offer is not limited to building products. It also opens up to interior furnishings, decorations, kitchen accessories or design elements. In practice, this means that almost every retailer operating in the broadly defined area of „home and surroundings” can find a place for their brand here.

Why is Castorama Marketplace an opportunity?

The e-commerce market in Poland is developing extremely dynamically. Customers are increasingly willing to buy online not only electronics or clothing, but also home and garden-related products. However, there has been a lack of a specialised platform that focuses on this sector.

Allegro or Amazon offer huge reach, but also huge competition. In such an environment, your products land next to hundreds of others from different, often unrelated categories, making it difficult to reach the right customer. Castorama takes a different approach - it builds an ecosystem focused on home and garden needs, so you reach your audience at the point of purchase decision. This translates into more effective offers, higher conversions and lower promotional costs.

How do you start selling and prepare an offer?

Implementation in Castorama Marketplace is similar to other large platforms, but the focus is on quality and compliance. To begin, you create a seller account, go through a verification process (KYC, company details, acceptance of terms and conditions) and configure the basic shop settings.

The next step is to add the product catalogue - most conveniently in bulk, via an Excel file or Base integration, which allows categories and attributes to be easily mapped. You then create offers, which must include a full set of materials: a main description (up to 2,000 characters, unique, written in the language of benefits), a list of product features (USPs), a short sales description, and up to 10 images - the first must be on a white background, the subsequent ones can be arranged. Add videos (up to 60 seconds) and PDF files, such as instruction manuals or energy labels.

At the same time, you take care of legal compliance: identify the responsible person in the EU according to GPSR, add the warnings and safety information required in the category. The absence of any of these elements may result in the rejection of the offer, so it is worth approaching the process methodically and using checklists.

Customer service and returns

Castorama places high demands on customer service. Any question or complaint is handled exclusively by the Mirakl system and you have a maximum of 48 hours to respond. Failure to respond means Castorama may take over the matter and, in extreme cases, suspend your account. It is best practice to respond quickly and use ready-made templates, as well as flagging threads that do not require a response - this stops the SLA meter (the time allowed to handle the enquiry).

As far as returns are concerned, the customer has 14 days to withdraw from the contract and the seller arranges for the goods to be collected from the buyer's home. The cost depends on the size - ranging from around £40 for a parcel to several hundred zloty for a pallet - and you have to return the money within 14 days of accepting the parcel. You handle returns in Mirakl with one click, but you must remember that the funds must be available in your balance.

Integration and automation

By integrating with Base, the entire sales process on Castorama Marketplace can be significantly simplified. In one system, you will handle product listing, order retrieval, transfer of tracking numbers and bulk updates of stock and prices. This is a convenient solution for both new sellers and companies already operating on other marketplaces.

You will prepare a complete offer by completing the main description, product features, sales description, images, additional material and GPSR-compliant data. It is worth using the AI assistant available directly on the website. All of this can be entered and synchronised via Base, and if you have a large number of products, an alternative is to work on Excel files.

How can bTOP help?

Entering Castorama Marketplace is a great opportunity, but also a lot of paperwork and technical requirements. At bTOP we help you through the process from start to finish - From setting up and configuring your account, preparing your listing content and images, to integrating with Base, listing your first products and implementing customer service and returns procedures. We can also handle single orders, such as listing a specific pool of products if you are already operating on the platform. Each stage is handled by our dedicated specialist, so you can be sure that everything will be done according to the guidelines.

Summary

Castorama Marketplace is a new, rapidly growing sales space that combines the strength of a recognisable brand with clear rules and high standards of service. It is a platform created for businesses in the Home and Garden sector, but also open to home furnishings in the broadest sense. It gives retailers access to loyal customers who immediately know what they need, while requiring top-level offers to be prepared. Entering now allows you to build a competitive advantage before the market becomes saturated.

Contact us via the form to find out how we can help you.

Author: Kacper Pawlak
Date of publication: 4.09.2025r.