[Lomac]

Here's all you need to know if you want to start charging more money:

Additional Rent Increase under the Residential Tenancy Act
The Residential Tenancy Act allows a landlord to apply to an arbitrator for approval of a rent increase in an amount that is greater than the basic Annual Rent Increase. The policy intent is to allow the landlord to apply for dispute resolution only in “extraordinary” situations. The Residential Tenancy Regulation4 sets out the limited grounds for such an application. A landlord may apply for an additional rent increase if one or more of the following apply:
(a) after the allowable Annual Rent Increase, the rent for the rental unit is significantly lower than the rent payable for other rental units that are similar to, and in the same geographic area as, the rental unit;

Here's the fine print regarding that:

The landlord has the burden and is responsible for proving that the rent for the rental unit is significantly lower than the current rent payable for similar units in the same geographic area. An additional rent increase under this provision can apply to a single unit, or many units in a building. If a landlord wishes to compare all the units in a building to rental units in other buildings in the geographic area, he or she will need to provide evidence not only of rents in the other buildings, but also evidence showing that the state of the rental units and amenities provided for in the tenancy agreements are comparable.
The rent for the rental unit may be considered “significantly lower” when (i) the rent for the rental unit is considerably below the current rent payable for similar units in the same geographic area, or (ii) the difference between the rent for the rental unit and the current rent payable for similar units in the same geographic area is large when compared to the rent for the rental unit. In the former, $50 may not be considered a significantly lower rent for a unit renting at $600 and a comparative unit renting at $650. In the latter, $50 may be considered a significantly lower rent for a unit renting at $200 and a comparative unit renting at $250.
“Similar units” means rental units of comparable size, age (of unit and building), construction, interior and exterior ambiance (including view), and sense of community.
The “same geographic area” means the area located within a reasonable kilometer radius of the subject rental unit with similar physical and intrinsic characteristics. The radius size and extent in any direction will be dependant on particular attributes of the subject unit, such as proximity to a prominent landscape feature (e.g., park, shopping mall, water body) or other representative point within an area.
Additional rent increases under this section will be granted only in exceptional circumstances. It is not sufficient for a landlord to claim a rental unit(s) has a significantly lower rent that results from the landlord’s recent success at renting out similar units in the residential property at a higher rate. However, if a landlord has kept the rent low in an individual one-bedroom apartment for a long term renter (i.e., over several years), an Additional Rent Increase could be used to bring the rent into line with other, similar one-bedroom apartments in the building. To determine whether the circumstances are exceptional, the arbitrator will consider relevant circumstances of the tenancy, including the duration of the tenancy, the frequency and amount of rent increases given during the tenancy, and the length of time over which the significantly lower rent or rents was paid.
The landlord must clearly set out all the sources from which the rent information was gathered. In comparing rents, the landlord must include the Allowable Rent Increase and any additional separate charges for services or facilities (e.g.: parking, laundry) that are included in the rent of the comparable rental units in other properties. In attempting to prove that the rent for the rental unit is significantly lower than that for similar units in the same geographical area, it is not sufficient for the landlord to solely or primarily reference Canada Mortgage and Housing Corporation (CMHC) statistics on rents. Specific and detailed information, such as rents for all the comparable units in the residential property and similar residential properties in the immediate geographical area with similar amenities, should be part of the evidence provided by the landlord.
The amount of a rent increase that may be requested under this provision is that which would bring it into line with comparable units, but not necessarily with the highest rent charged for such a unit. Where there are a number of comparable units with a range of rents, an arbitrator can approve an additional rent increase that brings the subject unit(s) into that range. For example, an arbitrator may approve an additional rent increase that is an average of the applicable rental units considered. An application must be based on the projected rent after the allowable rent increase is added. Such an application can be made at any time before the earliest Notice of Rent Increase to which it will apply is issued.

I know it's a giant wall of text to read, but it's all laid out there if you wanted to try and up your rent above the standard rate.