The Assessment of Annual Valuation of any property is done either through the process of General Revaluation (GR) or through Interim Revaluation (IR). Periodic Revaluation of existing land/building is undertaken through GR in every 5-year cycle.
Interim Revaluation (IR) is restored to when there is any addition/alteration in the land/building or increase/decrease in rental value in between a GR.

The assessment process starts with issuing a notice to the Land/Building owner asking to submit true and correct returns of the rent or annual value there of in form 'B' and a true and correct description of the building containing such particulars as the assessor may direct.

After receipt of the documents submitted by the assesses, Assessor Physically inspects the site in order to verify the supplied documents. The details of the preemies, which are noted in a field book through such inspection are taken into consideration for proposed Annual Valuation.

Once the Proposed Annual Valuation is done by DCC it is informed to the Assesses and asked for appeal (if it is not agreed by the assesses) in 30 days. Unless there is any appeal from the assesses the proposed Annual Valuation is Considered as Final.
If there is any appeal (Using 'P' Form) from the assessee within the stipulated time the appeal is refereed to the Assessment Review Board (ARB) which is usually consists of one Civil Engineer, one lawyer and one ward Commissioner or salaried employee of DCC.

Review Board/Appellate committee issues a notice (signed by TO) to the Tax payer for submitting necessary documents & statements justifying the decrease of valuation within given time.

Tax payer submits necessary documents and statement justifying the decrease of valuation.

Review board re-vaults the valuation, gives decision and issues a notice to the Tax Payer informing the new/Justified rate (if any) which is signed by TO.