Broadcaster Pat Kenny and his wife, Kathy, are opposing plans for three apartment blocks and seven houses on a site next to their Dalkey home.
In August, property firm Bartra Capital Property - founded by developer Richard Barrett - paid €3.1m for the Maple Tree House site adjacent to the Kennys' home and also paid for an additional 0.51 acre site to allow the planning application to be lodged last month.
The application consists of 19 apartments in three blocks ranging up to four storeys, along with five three-bedroomed homes and two semi-detached homes on the 1.4 acre site.
Architects for the scheme said that great care has been taken to protect privacy between the proposed units and out from the site to the existing houses.
However, the Bartra plan is meeting with stiff local opposition, with 11 other objections lodged by locals in addition to the Kenny objection.
The comprehensive Kenny objection runs to 16 pages and is signed by Pat Kenny and Kathy Kenny.
The Kenny objection - which is carried out to a high professional standard and appears to have been drawn up by the Kennys themselves - points out that their home, The Anchorage, abuts the subject site.
The objection states: "In my opinion, the proposed development by the applicant is not in compliance with the proper planning and sustainable development of the area."
The objection states that, if permitted, the development "would detrimentally impact on The Anchorage" and other residential properties in the area.
The objection adds: "It would also set a precedent that could ultimately seriously damage the character of the area."
The Kennys state that the proposed development would materially contravene the Dun Laoghaire-Rathdown County Council Development Plan's policies and objectives for the subject site "and would have a detrimental impact on its character".
They state that planning permission should be refused as "this development is ill-thought and appears based on the quest for density alone with scant other consideration".
The Kennys state: "We have no desire to object to every development proposal, but we seek only to have appropriate development in terms of scale and function.
"At the outset, Ireland is undergoing a housing crisis. Therefore, it is incumbent to realise the development potential of serviced-residentially zoned land.
"However, as outlined clearly in the Dun Laoghaire-Rathdown County Development Plan, any densification of brownfield lands must be balanced with respect for the receiving environment of established residential properties.
"With that principle in mind, the crux of the issue in considering the proposed development is that the suitability of the site in principle and the ability of the receiving environment to absorb the proposal are two very different considerations."
The Kennys are opposing the plan on a number of grounds - density, scale and massing, design, traffic impact, impact on trees and habitat and residential amenity.
The Kennys also state that the development will result in gross overlooking, along with loss of light and privacy of The Anchorage.
They say that "the Duplex apartments at the end of the site overlook The Anchorage and any roof terrace or window would be less than 15 metres from our daughter's bedroom window and 19 metres from our bedroom window".
The Kennys state that the loss of light on their property "would be disastrous".
The consultants state that the development will not have an adverse impact on residential amenities or views from the wider area and has an attractive design.