The new 2 year fixed rate mortgage is available at 65% LTV (loan to value) with a £1,545 fee.
All Chelsea Building Society mortgage products have an offset equivalent, priced at 0.20% above the standard mortgage product.
Chelsea Building Society Product Manager, Brendan Gilligan, said:
"We've cut these rates to make our products even more competitive. We know that our members want good value for money, and the Chelsea has not disappointed with this latest deal."