This is what I've found at the henlyglobal site about malta and the conditions to apply for permanent residency. Apparently it was a lot harder to become a resident in malta until they joined the EU which permits anyone in the EU to buy as much property and in what ever country they choose.
"Conditions for obtaining a residence permit
While there is no minimum stay or residence required, when the permit is first issued the Permanent Resident must come to Malta at least once within the first twelve months to have the passport stamped and to register with the Inland Revenue Department. The permanent residence status is open to those foreigners who can provide evidence:
1. that they have an annual income equivalent to 10,000 Maltese lira (MTL, 1 MTL = approx. US$ 2.50), or that they own capital equivalent to MTL 150,000; and
2. that they are able to import into Malta from overseas a minimum annual income of MTL 6,000, plus MTL 1,000 for each of their dependents. For the purposes of this scheme "dependents" mean: the spouse, children under 21 years of age and a parent or grand parent who is wholly dependent on the applicant.
Once in possession of the permit, the resident must within the first year from obtaining the permit:
3. either (aa) Purchase a flat valued at least MTL 30,000; or
(bb) Purchase a house valued at least MTL 50,000; or
(cc) Rent property for at least MTL 1,800 per annum.
4. annually remit to Malta from overseas a minimum income equivalent to MTL 6,000 plus MTL 1,000 for each dependent.
5. not engage in business or employment nor engage in any form of political activity in Malta. This general statement however is subject to the following clarification: the Permanent Resident cannot be employed by a Maltese person or Maltese registered company and cannot offer freelance services to Maltese persons or Maltese registered companies. However, Permanent Residents may use Malta as a base to work from, provided that they do not offer their services on the local market. Permanent residents may also be employed by or offer their freelance services to persons or companies outside Malta. Finally, Permanent Residents may be directors of International Trading or Holding Companies registered in Malta but may not be the beneficial shareholders.
Upon the death of the permanent resident, the residence permit is transmitted to the surviving spouse, but does not pass on to the descendants upon the death of the spouse."