5 bed detached house for sale

New Passivhaus Home, Trefin, Pembrokeshire SA62

Reduced to £650,000

Freehold | EPC Rating: A | 5 Bedrooms | 3 Bathrooms

certified passivhaus home - ready to move in

Llwyn Onn, Trefin, Pembrokeshire National Park

Move in today. Energy bills measured in tens, not hundreds. One of fewer than 5,000 certified Passivhaus homes in the UK - set in the heart of the Pembrokeshire National Park.

About this home

There are homes that look beautiful. There are homes that feel special. Very rarely, a home comes along that does both - and then costs almost nothing to run.

Set within the Trefin Conservation Area in the heart of the Pembrokeshire National Park, this is one of just three individually designed and independently certified Passivhaus homes - a building standard so exacting that fewer than 5,000 such properties exist across the entire United Kingdom. This is not a home that simply claims to be energy efficient. It has been engineered and certified to the world's most rigorous performance standard, with heating costs estimated at under £100 per year. In a world of rising energy costs, that is not a footnote - that is the reason to buy.

What is A passivhaus?

From the outside, it looks like a beautifully designed contemporary home. On the inside, it operates on an entirely different level. Triple-glazed windows eliminate draughts and external noise. A continuous mechanical ventilation system circulates and filters the air, maintaining a consistent, healthy internal temperature year-round - without relying on conventional heating. The building envelope is so precisely constructed that the structure itself does the work.

The result:

Comfortable - constant internal temperature, year-round.

Healthy - internal air is continuously circulated and filtered.

Quiet - triple-glazed windows minimise all external noise.

Economic - approximately 90% lower energy costs than a conventional build.

The accommodation

This completed, ready-to-occupy residence is arranged over three levels and designed to maximise light, countryside views, and the exceptional quality of the Pembrokeshire surroundings.

Entrance Hall

A bright and spacious entrance that sets the tone for the home's contemporary layout. Clean lines and considered finishes connect the ground floor living areas to both the first floor above and the flexible lower ground floor below.

Kitchen / Dining / Sitting Room

At the heart of the home - a stunning open-plan space occupying the full main floor. Full-height south-facing glazing floods the interior with natural light and passive solar warmth, while sliding doors open directly to the landscaped garden. A glass-fronted balcony terrace extends the living space further into the landscape, ideal for al fresco dining and evening relaxation. The kitchen is sleek, handleless and fully integrated with contemporary appliances, designed to function as beautifully as it looks.

Cloakroom

Conveniently positioned off the entrance hall with contemporary WC and basin.

Store Room

Useful additional storage at ground floor level.

First Floor - Bedroom 1 with En-Suite

The principal bedroom is generously proportioned with sweeping rural views. The en-suite shower room is finished to a high specification with walk-in shower, vanity unit, low-level WC, and fully tiled walls and floor.

Bedroom 2 & Bedroom 3

Two further generous double bedrooms, each with outlook over the Pembrokeshire landscape and served by the beautifully appointed family bathroom featuring a freestanding bath, walk-in shower, low-level WC, vanity unit, and premium contemporary fittings.

Lower Ground Floor - Bedrooms 4 & 5 / Flexible Accommodation

The lower ground floor unlocks the home's full versatility. Two spacious rooms - each with direct access to the rear garden via sliding doors - can serve as Bedrooms 4 and 5, or be configured as a home office, studio, gym, or self-contained annexe. This level is served by its own en-suite shower room and a second cloakroom.

Plant Room / Utility

Housing the advanced mechanical systems of the Passivhaus - mvhr ventilation unit, utility connections, and laundry provision. Smart, discreet, and fully specified.
Outside


Beautifully landscaped gardens with south-facing terracing and patio areas. Solar panels contribute to the property's outstanding energy credentials. Parking for up to three vehicles. The development comprises just three individual homes, each with its own garden and aspect.

The location

Trefin is one of North Pembrokeshire's most cherished coastal villages - a Conservation Area settlement within the National Park, minutes from the Pembrokeshire Coast Path and the beaches at Abereiddy, Abermawr and Pwll Deri. The village pub, community hall and local café serve the community well. The cathedral city of St Davids and the market town of Fishguard are within easy reach for schools, amenities, and transport connections.

This is a completed, move-in ready home of exceptional quality in one of Wales' most beautiful locations. Available exclusively through Fine & Country West Wales.
Key information


Price: £650,000

Tenure: Freehold

EPC Rating: A

Bedrooms: 5

Bathrooms: 3

Location: Trefin Conservation Area, Pembrokeshire National Park

Planning Authority: Pembrokeshire Coast National Park Authority

Construction: Up to Passivhaus Standard

To arrange a viewing please contact Fine & Country West Wales

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Entrance Hall

Stairs to the first-floor landing and lower ground floor, as well as ground floor receptions

Cloakroom

Low level WC, Wash Hand Basin

Living Room

A bright and open reception area with floor-to-ceiling glazing, wood flooring, and direct access to the garden terrace. Designed to maximise natural light and passive solar gain in line with Passivhaus principles.

Kitchen/Dining Room

A sleek, modern kitchen with integrated appliances, handleless cabinetry, and open-plan dining space. Sliding doors lead to the garden, blurring the line between indoor and outdoor living.

Ensuite Shower Room

Luxury Suite with walk in shower, Low level WC, Vanity Unit, Tiled walls and floors.

Family Bathroom

Luxury suite with a walk-in shower, low-level WC, vanity unit, and tiled walls and floors. Freestanding Bath.

Lower Ground Floor

Accessed via the striking staircase from the ground floor.

Lower Ground Floor Cloakroom

Low level wc, vanity wash hand basin

Plant Room /Laundry Room

Housing the technology for the PassivHaus and also offering a utility room with space and plumbing for washing machine and dryer.

Bedroom 4 / Additional Reception Room

Flexible spacious room with access to the rear garden via sliding doors

Ensuite Shower To Reception Room / Bedroom 4

Low level wc, walk in shower, vanity wash hand basin

Bedroom 5 / Studio/ Additional Reception Room

Excellent size and offers flexible accommodation for bedrooms or an office or gym. Door to rear gardens.

Garden

Front Gardens – maintenance friendly with parking to the front, side access to the rear gardens and lower ground floor.

Garden

Landscaped rear gardens enclosed by timber-panelled fencing. Laid to lawn with countryside views and offering a secluded aspect.

Balcony

Balcony/Deck off the Living Room is a significant outside space and steps lead down to a further patio area accessed via the lower ground floor.

Parking - Off Street