Make buildings better.

For people. For nature.

Who are we?

We are a consulting firm specialising in the fields of sustainability, climate neutrality, energy efficiency and ESG strategies for the commercial real estate sector. Our services help our clients develop energy-efficient, resident-friendly and environmentally neutral buildings featuring innovative and functional solutions, which boost their market value and their attractiveness as an investment.

JWA in numbers

10

+

years on the market

70

+

experts at green construction.

609

specialised analyses*

173

mln

obtained certifications*

350

+

contracts signed*

270

contracts signed*

* 2023 only.

JWA offers
comprehensive services

•

Sustainability and green certifications

•

Climate neutrality of buildings (Net Zero)

•

ESG strategies and reporting

Looking for green solutions for your company?

Leave us your contact request, and our expert will get back to you within 24 hours.

Przemysław Rejczak

Head Energy and Building Performance

Our trusted partners

Explore our Case Studies

Advisory services in the BREEAM In-Use certification process for Fortress logistic parks

Net Zero decarbonization analysis using energy model for Q22 Warsaw

Advice and execution of a Type III environmental product declaration (EPD) for Mercor products

Our accreditations

Our memberships

News

Knowledge Zone

#DORADZTWO #ESG #NET ZERO

19.01.2026

Jak sfinansować modernizację starszych centrów handlowych? – Transition Finance dla „brown assets”

#DORADZTWO #ESG #SUSTAINABILITY

19.01.2026

Sustainability-Linked Loans dla portfeli biurowych: Negocjacja KPI i marży z bankami

#DORADZTWO #ESG #SUSTAINABILITY

19.01.2026

ESG Rating jako driver wartości: Jak poprawić score w GRESB o 20 punktów w rok?

Newsletter

Keep up to speed with the latest green construction trends!