Kathsoo – all that’s substantially correct, but as neither your Executive Committee (E/C) nor Strata Manager appear to be doing anything about your neighbour’s renovations and his changes to the Common Property, you need to personally:
1) apply for mediation of the issues HERE
2) apply for adjudication under Clause 138 HERE; and,
3) seek interim orders for the neighbour’s works to be immediately stopped HERE making sure that you attach copies of minutes outlining what the E/C did approve, and why you believe the interim orders are urgent!
Note that the application for interim orders needs to be lodged concurrently with those for mediation and adjudication (e.g. in the same envelope), as in that way those orders can be served on your neighbour immediately to stop his renovation activities, thus allowing the mediation and adjudication processes to take their sweet time while you seek the active support of any other owners who feel as you do!
If in doubt, contact the New South Wales Civil and Administrative Tribunal on 1300 006 228 – tell them that you want to lodge an Application for Interim Orders, why, and why that’s urgent.