To do this you will need to instruct your own Royal Institution of Chartered Surveyors (RICS) valuer to carry out a valuation to confirm the current Market Value.
I wneud hyn bydd angen i chi gyfarwyddo prisiwr eich Sefydliad Brenhinol y Syrfewyr Siartredig (RICS) i gynnal prisiad i gadarnhau Gwerth presennol y Farchnad.