You have to serve written notice and text or e-mail not acceptable and you need to copy the RTB along with a completed notice of termination form. Notice period for tenants with more than one year and less than three years rental is 120 days. Regarding capital gains legal and auctioneering fees for both buying and selling the property are deductible, You can also claim for any major renovations such as new kitchen or bathroom , replace windows etc but not general maintenance.