Sustainability that pays.
Energy performance certificates, building efficiency, real-estate valuation and more.
You cannot issue an energy certificate yourself (§ 88 GEG). What you can prepare, why Excel is not enough — and the legal online route to a valid certificate.
Energieeffizienz-Expertin, Content-Managerin
Inherited a home? This guide shows when an energy certificate becomes mandatory (sale, letting) — and which retrofit duties may apply independently, with a 2-year deadline.
Energieeffizienz-Expertin, Content-Managerin
Property managers and the GModG: 24 monthly readings from the heating-cost-ordinance routine, quantified modernisation recommendations, and the HOA resolution risk explained for everyday practice.
Energieberater, Blogger
Section 87 of the GModG draft hits real-estate listings and landing pages from 2026. How marketing agencies turn it into a lead lever, a service stack and mandate protection.
Energieberater, Blogger
The GModG turns the energy certificate into a platform feature: §§ 80, 82, 84 and 87 hit property managers directly. How SaaS platforms integrate via API — without an in-house consultant team.
Energieberater, Blogger
What changes for residential estate agents under the GModG? Sections 80, 87 and 108 GEG are being rewritten — six fine offences, unfair-competition warning risk, new listing disclosure rules. A practical guide for the cabinet draft.
Energieberater, Blogger
Consumption certificate for older homes: the GModG draft removes the 1977 insulation rule. Who benefits — and which data you still need.
Energieberater, Blogger
Energy certificate with MWh per year: what the GModG draft changes — and why class A+ is not the whole story. For homeowners.
Energieberater, Blogger
GModG draft: consumption certificates will require 24 months of monthly data. When issuing now pays off – including a consumption certificate in advance for owners and landlords.
Energieberater, Blogger
GModG cabinet draft of 13 May 2026: A to G for non-residential buildings only; A+ to H stays for homes. Obligations, fines and staged entry into force in a fact check.
Energieberater, Blogger
Heat pump installed but your energy certificate still isn’t “green”? Learn how certificate type, consumption data and input mistakes influence the EPC class — plus practical checklists.
Energieeffizienz-Expertin, Content-Managerin
The government draft bill published on 5 May 2026 introduces targeted changes for energy certificates and signals a broader reform to come.
Energieberater, Blogger
A practical compliance decision guide for selling or renting: mandatory ad fields, when you must present the energy performance certificate at viewings, handover duties after a sale, and fine risk under the German Building Energy Act (GEG).
Energieeffizienz-Expertin, Content-Managerin
Need an energy certificate quickly for a sale or letting? German Building Energy Act (GEG) obligations (viewings, listings), fine levels and realistic timescales – for owners, agents and managers.
Energieeffizienz-Expertin, Content-Managerin
Energy certificates in transition: EU EPBD, Building Modernisation Act, new A–G scale and extended obligations. Overview for owners, agents and managers – with a European perspective.
Energieberater, Blogger
Heating replacement: gas, oil, pellets or heat pump – facts on building efficiency, primary energy factor, costs and property value. Guidance for owners and managers.
Energieeffizienz-Expertin, Content-Managerin
From May 2026 the energy certificate requirement in Germany also applies to lease renewal and major renovation. For landlords, managers and agents: obligations, deadlines, how to spot an expired certificate and benefits after refurbishment.
Energieeffizienz-Expertin, Content-Managerin
Energy certificate at the bank: the role it plays in financing, collateral and risk – and what property owners and professionals should watch for.
Energieeffizienz-Expertin, Content-Managerin
How online portals offer legally compliant energy certificates: API integration, white-label, lead generation. One API for the full certificate lifecycle.
Energieberater, Blogger
Energy certificates with the A–G scale: why EU-wide comparability remains limited and where the certificate still adds value. For brokers and owners.
Energieberater, Blogger
Will energy certificates be invalid from May 2026? EU Building Directive (EPBD), two scenarios for validity of old certificates and clear recommendations for owners, brokers and managers.
Energieeffizienz-Expertin, Content-Managerin
GEG 2026: Energy certificates are being re-evaluated. New A–G scale, extended duties and digital database. What owners need to know now.
Energieberater, Blogger
Energy certificate costs tax-deductible? ✓ Rental ✓ Sale ✓ §35a EStG ✓ All options and requirements at a glance. Save tax now!
Energieberater, Blogger
Discover 20 proven ChatGPT prompts for energy certificate topics. For brokers, managers and property professionals – how to use AI effectively.
Energieberater, Blogger
A free energy certificate is not possible, but you can avoid the cost. Three ways to save money and what to do instead.
Energieberater, Blogger
Can you get an energy certificate for a single flat? When do mixed-use buildings need multiple certificates? All about § 79 and § 106 GEG explained.
Energieberater, Blogger
Why the chimney sweep is not always the best choice for an energy certificate, what it costs and what alternatives you have.
Energieeffizienz-Expertin, Content-Managerin
How energy certificate values affect rent and property value in Berlin and other major cities — explained.
Energieeffizienz-Expertin, Content-Managerin
Looking for a provider to create an energy certificate? We compared 10 online providers for you.
Energieberater, Blogger
Building digitalisation is changing how properties are planned, operated and assessed. Here is what you need to know.
Energieeffizienz-Expertin, Content-Managerin
A short code with big meaning. The registration number on an energy certificate is not just a string of characters. Find out more here.
Energieeffizienz-Expertin, Content-Managerin
What you need to know about the energy certificate in Frankfurt am Main — building stock, grants and how to apply for a certificate.
Energieeffizienz-Expertin, Content-Managerin
The U-value is central to the energy assessment of buildings. What it means and how it is calculated — explained here.
Energieeffizienz-Expertin, Content-Managerin
Many owners look for a simple, low-cost and legally sound way to order an energy certificate online. With so many providers, choosing is hard.
Energieeffizienz-Expertin, Content-Managerin
Lower heating value (Hi) and higher heating value (Hs) sound similar but are not the same. Here is how the difference affects your consumption-based energy certificate.
Energieeffizienz-Expertin, Content-Managerin
What you need to know about the energy certificate in Munich — and you can order your certificate directly.
Energieeffizienz-Expertin, Content-Managerin
How does a heat pump affect the energy certificate? What technical and legal aspects matter? Find out here.
Energieeffizienz-Expertin, Content-Managerin
Secure your property financing: the energy certificate increasingly matters for financing too. Find out more here.
Energieeffizienz-Expertin, Content-Managerin
In Hamburg you can apply for the energy certificate online, simply and in line with legal requirements. Find out more and apply today!
Energieeffizienz-Expertin, Content-Managerin
The useful floor area (AN) in the energy certificate often differs significantly from the living area. Here is why.
Energieeffizienz-Expertin, Content-Managerin
You want to sell or let a property – but what about its energy efficiency? The demand-based certificate for residential buildings helps.
Energieeffizienz-Expertin, Content-Managerin
Find out how the building structure in Berlin and Brandenburg affects energy certificates for residential buildings, and how to apply for a certificate for your Berlin property quickly and in line with legal requirements online.
Energieberater, Blogger
What information and documents do you need to have an energy certificate prepared? We show you what to have ready.
Energieberater, Blogger
The energy quality of buildings matters more and more. Find out how the Energyausweis Smart from energyausweis.de helps you increase your property’s value.
Energieberater, Blogger
Our guide explains all values and figures in the energy certificate and what you can do with them.
Energieberater, Blogger
Whether you are an owner, architect or agent – everyone knows the energy certificate matters. But what do you need to know about it?
Energieberater, Blogger