Dealer Partner Portal for a Construction Materials Network in Berlin: 2026 Budget

The verdict in three sentences

A dealer partner portal for an aluminium window manufacturer and its 140 dealers costs EUR 40,000 to 85,000 excluding VAT in 2026, with a 5-month timeline. The core of the project is a product configurator that validates dimensions, finishes and options before ordering, combined with dealer-specific pricing synced with the ERP (Divalto in our reference case, or a German mid-market ERP such as proALPHA). Expected result: an order error rate cut from 12% to 2%, which often pays for the project in under 2 years.

Why window and door orders go wrong

A custom aluminium window or sliding door combines dozens of parameters: dimensions, opening direction, RAL colour, glazing, installation type, roller shutter box. When dealers order through PDF forms, email or phone, sales administration re-keys everything into the ERP. A swapped dimension or an incompatible option is discovered in the workshop, or even on site. Each error costs a remake, transport and an unhappy end customer.

The high end covers a configurator spanning the full range, windows, doors, sliding systems and conservatories, with 2D visualisation and automatic price and weight calculation.

What order errors really cost

Return on investment is calculated first on avoided errors, then on freed sales administration time. The table below models a 140-dealer network placing 9,000 orders a year with an average basket of EUR 2,400 excluding VAT.

Even halving the average cost per error, annual savings still exceed the portal budget.

What to scope before launch

Three workstreams determine success. The first is formalising product rules: they often live in the engineering team's heads and must be written down as compatibility matrices. The second is ERP integration: depending on your version, exchanges run through an API, web services or scheduled files, and a test environment is essential. The third is dealer adoption: a slight online pricing advantage, for example a 1% discount, speeds up the switch. Expect 70% of orders through the portal after 6 months.

Mini case study

Laurent, sales director at an aluminium window manufacturer near Toulouse (140 dealers, 9,000 orders a year), counts 1,080 faulty orders a year, or 12%, at EUR 180 on average: EUR 194,400 in direct costs. A Berlin-based manufacturer of the same size would show a very similar profile. The chosen portal costs EUR 68,000 excluding VAT plus EUR 10,000 a year in maintenance. With 70% of orders online in year one, errors on that volume fall from 12% to 2%: 6,300 orders x 10% = 630 errors avoided, or EUR 113,400. Net gain in year 1: 113,400 - 10,000 = EUR 103,400, a payback in 8 months, before counting 1,000 hours of freed admin time.

FAQ

What budget for a B2B partner portal in 2026?

EUR 40,000 to 85,000 excluding VAT with configurator and ERP integration. A simple ordering portal on a standard catalogue, without configurator, starts around EUR 25,000.

How much does a window configurator cost?

EUR 12,000 to 28,000 depending on the number of ranges and rules. It is the item that reduces order errors the most.

Can each dealer see different prices?

Yes, discounts and terms are synced from the ERP. Each dealer sees only their own net price and payment terms.

How long does ERP integration take?

Allow 4 to 6 weeks and EUR 8,000 to 17,000. Duration depends on the ERP version and the chosen flows, API or scheduled files.

How do you get dealers to use the portal?

A 1% discount on online orders and instant quotes are often enough. A realistic target is 70% of orders online after 6 months.

Let's scope your project. We scope your partner portal: configurator, dealer pricing, ERP integration, an indicative budget of EUR 40,000 to 85,000 and a 5-month timeline. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.