Over the last several years when an owner went to sell their Brittan Heights home, the HOA would do an inspection inside.  If the HOA discovered noncompliant or unapproved modifications, then to the best of my knowledge, while the HOA would not halt the sale of the property, it would require that the buyer be notified that the Board could require that the buyer make corrections at the buyer’s own expense unless the issue was resolved prior to close of escrow. This often introduced some uncertainty and delays into a sale since the buyer often wanted the problem corrected or the parties waited for the HOA to rule on whether it would require corrections at all 

As of October 2016, the HOA inspection seems to no longer be required. However, this is not to say that they may not return again, so play it safe, get approval on modifications to your home.