Below are the actual rules extracted directly from HPL and you will see that only changes to the Master Deed or Statutes need unanimity, there is also a required for a 60% majority as set out below otehr decisions are taken and approved by a simple majority as described by Maria.
As can be seen from the text below the example given by Johnzx would only require a 60% majority.
Section 17
The resolutions of the owners’ general assembly shall be subject to the following rules:
First.
Unanimity shall only be required for the validity of those resolutions involving the approval or amendment of the rules contained in the master deed or in the community statutes.
The establishment or elimination of the lift, janitor and security services, or other common services or facilities of general interest, even where they involve the modification of the master deed or the community statutes shall require the favourable vote of three fifths of the total number of unit owners representing three fifths of the assessment quotas. The lease of common elements lacking a specific use shall require the favourable vote of three fifths of the total of unit owners representing three fifths of the assessment quotas as well as the consent of the unit owner directly affected, if this were the case.
Notwithstanding the provisions of sections 10 and 11 of this Act, work carried out or new common services established to eliminate architectural barriers hindering the access or the mobility of persons with physical disabilities, even where such work or services may involve the amendment of the master deed or community statutes shall require the favourable vote of a majority of unit owners representing a majority of the assessment quotas.
To the effects established in the preceding paragraphs of this rule, the votes of duly summoned unit owners absent from the meeting shall be computed as favourable if, having been informed of the resolution adopted by those present in conformity with the procedure established in section 9, they did not state their dissent to the person acting as community secretary within thirty natural days, by any means ensuring record of delivery.
Resolutions legally adopted under the provisions of this rule shall be binding on all unit owners.
Second.
The installation of the common infrastructures providing access to telecommunication services regulated in the royal decree law 1/1998, of 27th February, or the adaptation of existing ones, as well as the installation of solar energy supply systems, whether common or private, and infrastructures necessary to access to the new collective energy supply systems may be agreed at the request of any one unit owner by a third of the members of the community representing a third of the assessment quotas.
The community shall not charge unit owners who did not vote in favour of the resolution for the cost of installation or adaptation of the said common infrastructures or those derived from its upkeep and maintenance. However, should they subsequently request access to telecommunication services or energy supply systems, and this required using the new infrastructures or the adaptation of the existing ones, they may be authorised against payment of the amount that would have corresponded to them, duly updated with the application of the legal interest rate.
Notwithstanding provisions aforementioned concerning expenses for the upkeep and maintenance, the new infrastructure installed shall be considered to be a common element for the purposes of this Act.
Third.
All other resolutions shall be adopted with the vote of a majority of the total number of unit owners representing a majority of the assessment quotas.
Where the meeting is held on second call, the resolutions adopted by a majority of those present shall be valid if they represent more than half the value of the assessment quotas of those present.
Where a majority cannot be reached by the procedures provided for in the preceding paragraphs, the judge, on petition of an interested party, made within a month of the date of the meeting held on second call, and after hearing the litigants, duly cited, shall adjudge in equity within twenty days from the date of the petition, awarding legal costs to the corresponding party.
Regards
Barry