The verdict in three sentences
For a building energy consultancy of 10 to 15 engineers in Berlin, the right 2026 budget sits between 9,000 and 20,000 EUR, depending on page count and how deep the filterable project references go. Developers and public clients sign on proof: GEG compliance work, energy audits, before and after consumption figures, all presented in a way that meets BITV accessibility expectations. A well-built site targets 8 to 15 qualified enquiries per month after six months, which pays it back with the first tender won.
What an engineering consultancy actually pays for
A client preparing a tender compares three to five consultancies in a few minutes. They look for your certifications, your references by building type (residential blocks, offices, schools), your simulation tools and team size. The website works as a permanent tender submission, readable before the call for bids is even published.
| Package | Pages | Key content | 2026 budget (net) | Timeline |
|---|---|---|---|---|
| Essential | 8 to 12 | Services, team, 10 static references | 9,000 to 11,500 EUR | 6 to 8 weeks |
| Standard | 12 to 16 | References filterable by service and building type, technical blog | 11,500 to 15,000 EUR | 8 to 9 weeks |
| Advanced | 16 to 20 | GEG, audit and retrofit filters, project sheets with figures, careers area | 15,000 to 20,000 EUR | 9 to 11 weeks |
| Bilingual DE/EN option | +30% content | Useful for international investors and funds | +2,500 to 4,000 EUR | +2 weeks |
| 15 written project sheets | 15 sheets | Engineer interview, performance data, photos | +2,000 to 3,500 EUR | In parallel |
| Site and team photography | 1 day | 40 to 60 usable images | +1,200 to 1,800 EUR | 1 week |
These ranges are a 2026 estimate for a Berlin agency or senior freelance studio. A purchased WordPress theme filled in-house costs less, but it rarely handles multi-criteria reference filtering properly, and that is exactly what buyers browse.
Filterable references: the core of the scope
A well-structured reference database lets a public buyer find 'an energy audit on a school over 3,000 m² in Brandenburg' in ten seconds. Each project sheet carries normalised fields: service, building type, floor area, client, year, energy saving, target standard. This data modelling represents 20 to 30% of the budget, and it is what separates a site that generates contacts from an online business card.
| Recurring item | Annual range (net) | What is included |
|---|---|---|
| Hosting in Germany or EU | 240 to 540 EUR | Managed server, daily backups, SSL certificate |
| Technical maintenance | 600 to 1,200 EUR | CMS and plugin updates, monitoring, fixes |
| Adding references | 360 to 660 EUR | 10 to 20 sheets per year entered or reviewed |
| Local SEO tracking | 0 to 1,500 EUR | Rankings for 'Energieberater Berlin', quarterly report |
| Standard maintenance total | 1,200 to 2,400 EUR | Excluding advanced SEO |
Pitfalls that blow up the budget
The first pitfall is content: many consultancies sign a development quote, then discover they must write 30 pages and 20 project sheets. Plan for 25 to 40 internal hours or a copywriting service. The second is compliance: a full Impressum, a GDPR-compliant cookie banner and BITV 2.0 / WCAG 2.1 AA accessibility if you bid on public contracts, which adds 8 to 12% to the build. The third is cheap hosting that slows the site: aim for under 2 seconds on mobile, because project managers often browse from a building site.
Mini case study
Lena, managing director of a 12-engineer energy consultancy in Berlin, picks the advanced package at 17,500 EUR, plus 15 written project sheets at 2,800 EUR, for 20,300 EUR in total. Maintenance costs 1,800 EUR per year. After six months, the site generates 10 qualified enquiries per month, 2 of which become formal tenders. A single energy concept for a 60-unit residential project is worth about 32,000 EUR in fees. With a 15% win rate on those tenders, roughly 3.6 extra projects per year, the site pays for itself with the first contract and returns more than 5 times its total cost in year one.
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FAQ
How much does a website for an energy consultancy in Berlin cost in 2026?
Plan for 9,000 to 20,000 EUR net for 12 to 20 pages with filterable references. Maintenance adds 1,200 to 2,400 EUR per year depending on update volume.
How long from quote to launch?
Between 8 and 11 weeks for a standard or advanced package. Half of all delays come from content, so gather your 15 best references the day you sign.
Is BITV accessibility mandatory for a private consultancy?
BITV 2.0 binds public bodies, and the European Accessibility Act covers many B2C services from 2025. For a B2B consultancy bidding on public contracts, WCAG 2.1 AA is a strong expectation and costs 8 to 12% of the build.
How many enquiries can such a site generate?
A realistic target is 8 to 15 qualified enquiries per month after six months, provided you publish 1 to 2 references per month and work on local SEO.
Do we need a bilingual German and English site?
If 10% or more of your clients are international funds or developers, the English option at 2,500 to 4,000 EUR is worth it.
Let's scope your project. Send us your reference list and target building types: we will price a 12 to 20 page scope, between 9,000 and 20,000 EUR, delivered in 8 to 11 weeks. Detailed quote within 48 h. WhatsApp +221 77 596 93 33.
Mohamed Bah
Fondateur, Kolonell
Passionate about digital and entrepreneurship in Africa, Mohamed has been helping Sénégalese businesses with their digital transformation since 2020. Founder of Kolonell, he believes every SME deserves a professional and accessible online présence.
