One new dwelling at Land Adjacent To 10 Warden Street, Llanberis
Summary of planning committee decision
Decided by Gwynedd Planning Committee on 13 Jul 2026.
What was proposed
The application proposed a detached two-storey family dwelling with three bedrooms, a modern pitched roof, solar panels and a rear balcony.
“Description: This is a full application to construct a detached two-storey family dwelling situated on a slope to the south-west of the house at 10 Warden Street. The house would be a two-storey design with the gable-end of the property facing the public road. The upside-down layout would comprise three bedrooms, en-suite, bathroom, a snug room and storage on the ground floor, and a kitchen/open dining room, living room and bathroom on the first floor.”
“The roof of the proposed dwelling will be in natural slate together with the installation of solar panels and the walls finished in a white render with a panel of partially slate cladding on the front and side elevations. The site is located within the development boundary. There is a wildlife site opposite the proposed new property. The site is within the Dinorwig Landscape of Outstanding Historic Interest.”
Officer report
Design and local character
The proposed dwelling was considered too large, high, modern and prominent for its setting, failing to respect nearby traditional houses and the landscape.
“It is considered that the houses on the street and generally in the vicinity are of a more traditional design. The design of the proposed two-storey dwelling does not offer a progression in its design to the nearby houses with its bulk and modern features such as its large balcony (although it is recognised that it has been reduced since the previous application), size and orientation of the property and its general design facing the side elevation of the property next door…”
Officer report
Impact on neighbours
The balcony and the dwelling’s orientation were considered likely to cause overlooking, noise, nuisance and a dominant impact on nearby homes.
“It is recognised that the balcony on the first-floor level on the rear elevation of the building has been reduced since the previous application, it continues to extend along the rear of the property and there is concern that it creates a dominant impact on the chapel's residents.”
“However, due to the setting and orientation of the proposed property, all movements in and out of the property will occur in the small gap between the new house and property number 10, rather than on the front of the property like all the other houses in the terrace.”
Officer report
Consultation and support
The biodiversity and drainage proposals were acceptable, while supporters cited the design, parking and housing for a local Welsh-speaking family.
“Biodiversity Unit: The proposed parking spaces are within a wildlife site, however they are within the existing garage's footprint. The applicant has included a Green Infrastructure Statement with biodiversity improvements (tree planting, installation of bird boxes, bat boxes and insect hotels). All the improvements have been included in the planning designs. It is unlikely that the proposed development will lead to a significant negative impact on biodiversity.”
“Public Consultation: A notice was posted on the site and nearby residents were notified. The advertisement period has ended and correspondence was received supporting the application, noting that the application proposed a modern building that is in keeping with the environment, with sufficient parking provision, and creating a home for a local Welsh speaking family.”
Officer report
Reasons for refusal
The proposal was refused because its design harmed local character and its balcony, position and layout harmed nearby residents’ amenities.
“The modern design of the proposed dwelling, with its large balcony and glass doors/windows on the front and rear elevations, does not respect the character of the neighbouring houses nor that which is within the vicinity and these features would be incongruous. The proposal would not complement nor enhance the character and appearance of the site or area.”
“Due to the location, size and height of the balcony and the front of the proposed dwelling which faces the next-door property, it is considered that the proposal would overlook and have a dominant and overbearing impact and would be detrimental to the amenities of nearby residents in terms of noise and nuisance.”
Minutes
Sources
- Gwynedd Planning Committee minutes, 13 July 2026
- Agenda and papers (council website)
Source: Plota analysis of Gwynedd's committee minutes and officer report. Quotations are the council's own words; headings and summaries are Plota's.
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- Committee
- Gwynedd Planning Committee
- Council
- Gwynedd
- Date
- Monday 13 July 2026
- Recommendation
- Officers recommended refusal
- Committee decided
- Refused
- Minutes
- The council's minutes
- Meeting
- Agenda and papers (council website)
- Application
- View application →
- All decisions
- Gwynedd committee decisions →
This committee's year
53 decisions in the 12 months to this meeting, 4 against officer advice.
Source: Plota analysis of the committee's minutes.