It doesn't matter if you take depreciation or not, it still has to be recaptured.
Basis adjustment for depreciation allowed or allowable. You must reduce the basis of property by the depreciation allowed or allowable, whichever is greater. Depreciation allowed is depreciation you actually deducted (from which you received a tax benefit). Pub 946
One solution is to elect an accounting method change and file a Form 3115 in the current year and take the prior depreciation as a section 481(a) adjustment. [land value is separated, land is not depreciated]
Below are the IRS links related to the change in accounting method. TurboTax does not have that form.
May be these will help
Form 3115, Application for Change in Accounting Method
Form 3115
Instructions for Form 3115 (03/2012)
Instruction for 3115
Form 3115,
Form 3115 pdf
