‌The issue affects commercial property owners, investors, and businesses who may owe thousands of pounds in refunds. Missed capital allowances on fixtures and fittingsOne of the biggest areas where property owners lose out is capital allowances on fixtures and fittings. View 3 Images You could be missing out (Image: Alamy/PA)‌Incorrect Council Tax bandsResidential property owners may be paying more council tax than necessary due to incorrect banding. Unclaimed property and business reliefsThere are numerous reliefs available that a lot of property owners and businesses simply don't know about. For business reliefs, review whether you've claimed all available allowances for your property type and business activities.