Certified Passive House Tradesperson, specialised in Building Envelope & Services

Eric Aldenhoff

Hergenrather Eigenbau Gebrüder Steffens

Bahnhofstr. 90
4728 Hergenrath
Belgium

Phone: 0032 87657000
eric@steffens-eigenbau.be
http://www.steffens-eigenbau.be

Initial by Exam

Certificate valid from April 24, 2014
Certificate valid until May 30, 2019
The certificate only applies to this person.

Examined by IBN Passivhaus-Technik - Institut für Bauen und Nachhaltigkeit at St. Vith, Belgium