Re: Cgt
When you sell a property, you are liable to capital gains on the difference between the sales proceeds and the acquisition cost, which can be indexed if acquired prior to 2003. In the case of an inheritence, the acquisition cost is the value on the date of inheritence, normally this is the date of death. It is the value established during probate and will figure on the revenue affidavit and CAT forms.
However, you may claim relief from CGT for your Principal Private Residence (PPR relief) - this is calculated Period of Occupation/Period of Ownership - normally calculted in months.
The "Period of Ownership" is between the date of acquisition and the date of sale or disposal.
The "Period of Occupation" is the total time time you lived in the house as your principal residence - normally, you would have only one principal residence at any one time - plus certain periods which are deemed to be periods of occupation by the revenue even though you in fact lived elsewhere, subject to certain conditions. Thus the last 12 months of ownership are deemed to be 12 months of occupation. Also, if you live elsewhere in the state because of your employment, this period will be deemed a period of occupation, as long as you live in the house before and after this period of absence.
It is not clear how long you need to live in a house before it is deeemed to be your principal residence - obviously one month would be considered too short but 6 months might be OK - it would depend on the view taken by the revenue and not all revenue officers may take the same view.
The 3 year rule has nothing to do with CGT but is one of the conditions to be eligible for the Dwelling House Exemption for CAT purposes.