In his report, planning officer Ben Farrant wrote: "It is not considered to significantly reduce the garden area use for the property or planting, and would not harm the character or appearance of the conservation area.
"It is further noted that as the property is a single family dwellinghouse, an outbuilding of far larger proportions than that proposed here could be completed under the permitted development rights of the property without the benefit of planning consent.
"The proposal is considered to preserve the character and appearance of the conservation area. The proposal would not result in undue harm in terms of overlooking or loss of privacy.
"Overall, the proposal is considered to be acceptable in terms of its impact on privacy, outlook, sunlight, daylight, noise and vibration."
Cumberbatch even put up a temporary timber structure in his back garden in a bid to show neighbours the size of the proposed shed and the "very limited impact upon its setting".
In a letter to Camden Council, his planning agent, Michael Doyle, wrote: "The re-submitted scheme has been substantially revised in response to [planning] officer and neighbour comments.
"There is a range of different sized rear garden structures in the area, some of which are substantially larger than that proposed here.
"The side elevation drawing produced by objectors gives the entirely misleading impression that the side of the shed will rise up directly from the eastern side boundary wall. This is not the case. The shed is set back from the side boundary."
But in a letter of objection, neighbour Robert Ryan wrote: "I am very disappointed to see the return of this proposed structure to the front of our property.
"The application says the 'shed' will 'cast no shadow' but it will give the feeling of encroachment of the built environment, despite any attempts at camouflage.
"The outside space in front of our houses is where we gather as a community, for both social events and communal maintenance of the area.
"I find it surprising, to say the least, that the owner's representatives should try and dictate where we residents should spend our leisure time.
"In conclusion, I find the proposed structure to be oppressive, insensitive to the neighbours and a poor precedent for the future of our mews.
The local residents' association added: "No amount of 'Dads Army' camouflage will mask the shape of the building against the sky.
"Granting of such a scheme would set a dangerous precedent which would be used by the other houses in the road to adversely affect the environmental quality of the residents of the Mews and similar locations."
Representing Cumberbatch, Doyle hit back, commenting: "The proposed shed will in no way restrict the use of the mews as a communal open space.
"Objectors repeat the mistaken claim that the shed will extend across 'almost the entire width of the rear garden'.
"The shed occupies only a small area of the rear garden. It will not 'occupy an extreme area' and there will therefore be no significant loss of garden space."
Cumberbatch bought the three-storey, five-bedroom Victorian mansion three years ago and the proposed shed also includes a bike and tool store.
He scaled down the size of the proposed outbuilding from 6.25m to 5.7m wide, 2.5m deep and just under 10ft at its highest point.
In another letter of objection, neighbour Nicholas Jeune wrote "I remain very concerned by the effective increase in my sense of enclosure that this development would impose.
"This development would account for a loss of green space, a loss of light and an increased sense of enclosure, not to mention any noise implications if the shed was to be used for anything other than storage."
Another added: "I am concerned with the impact this proposal will have on light ingress to the mews, the quality of life for residents there, not least the effect this project will have upon the established and fine trees within the development zone."
Two years ago, Cumberbatch, won his bid to renovate the property including the conversion of the attic into another bedroom, a rear extension, new balcony and plant room despite neighbours' fears over noise from a new boiler.
It is not yet known if the planning application for the shed will be decided by a planning officer under delegated powers or councillors at a committee meeting.
MailOnline has contacted Camden Council and a representative for Benedict Cumberbatch for comment.
