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Os nad oeddech yn gallu dod o hyd i gyfeiriad penodol (yn cynnwys tŷ sydd newydd ei adeiladu) ac yn credu y dylai fod yn ein system, hoffem wybod.

Rhowch rai manylion i ni ac fe ymchwiliwn i'r mater.

Os oes angen cymorth arnoch i ddefnyddio’r offeryn chwilio, edrychwch ar ein hawgrymiadau chwilio: Cymorth i ddefnyddio’r Canfyddwr Côd Post a Chyfeiriad.

Sut rydym yn defnyddio eich gwybodaeth

Bydd rhoi eich gwybodaeth yn ein helpu i ganfod y broblem a chysylltu â chi er mwyn ei datrus o bosibl. Ein nod yw ymateb o fewn 48 awr.

Llenwch bob maes oni bai eu bod wedi eu nodi'n rhai 'dewisol'

Os ydych wedi symud i mewn i dŷ sydd newydd gael ei adeiladu, rhowch y dyddiad y gwnaethoch symud i mewn (dewisol)
Trwy anfon y ffurflen hon rydych yn cytuno i'n Telerau ac Amodau.

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