Residents have hit out at Warrington council after a 60ft high warehouse was built directly behind their houses.
The building has been described as an "eyesore" and a "monstrosity" by homeowners on Tourney Green in the Cheshire town who fear it will affect the value of their houses.
Tourney Green residents also said construction workers have caused dust and dirt to blow over their properties.
A group of angry homeowners has branded the construction of the warehouse an "outrageous planning decision" and are demanding answers from Warrington Borough Council.
According to planning documents, a two-metre fence was supposed to "help obscure" the building from residential areas nearby.
But locals say the structure is so big that it can be seen from almost every home and even blocks out natural sunglight.
Paul Taylor, whose view from the front of his house is impacted, said: "We have lived on Tourney Green for more than 20 years and this monstrosity started to be a visible eyesore around six months ago.
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"We have had many issues with the developer over constant dust and dirt blowing over to our properties and on top of this is the prominence of the construction overlooking some of our homes.
"It has impacted massively on our livelihoods, let alone the devaluation of our properties."
Four objections were received by planning officers from residents and these raised concerns about the close proximity, increased traffic, noise pollution and scale of the constructions.
Despite the objections, the planning documents stated that the nearest residential property would be around 85 metres away from the second unit and “some glimpses of Omega through trees and over fencing would be possible”.
The council concluded that there would not be an “unacceptable impact by way of loss of outlook or overlooking”.
A Warrington Borough Council spokesperson said: “This application was recommended for approval in accordance with our local development plan.
"It fully took into account all relevant considerations including representations received from the public.
"As with all planning applications, the application was judged on its own merits under national planning policy.
“Conditions were applied to the application to mitigate the impact of the development to an acceptable level.”