Photograph 1 of 36 of Gate Lodge, Oatlands House, Castleknock, Dublin 15, Castleknock,   Dublin 15
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Gate Lodge, Oatlands House, Castleknock, Dublin 15, Castleknock, Dublin 15D15E08V

€1,000,000

4 Bed~4 Bath~BER C2

What you'll like:

  • Historic property charm: The property is the original gate lodge to the historic Oatlands House estate, offering a rare blend of heritage character and modern potential that appeals strongly to buyers seeking uniqueness.
  • Generous site area: Occupying approximately 0.13 hectares or one-third of an acre, the expansive plot provides exceptional privacy, tranquil surroundings, and substantial outdoor space rarely found so close to the city.
  • Full planning permission: The property benefits from active planning permission for a stunning, contemporary architect-designed four-bedroom residence, significantly reducing the regulatory risk and design hurdles for the successful buyer.
  • Substantial recent renovations: The existing cottage has undergone extensive renovations exceeding one hundred thousand euros, ensuring a high baseline of modern comfort before any major extension work commences.
  • Advanced floor insulation: The floors were fully excavated, rebuilt with a damp-proof membrane, radon barrier, six inches of insulation, underfloor heating, and new screeds, guaranteeing excellent thermal performance and comfort.
  • Protected moisture management: External walls were thoughtfully drylined and backed with protective felt to help manage moisture properly, preserving the structural integrity of the historic building fabric.
  • Comprehensive ceiling insulation: Ceilings throughout the existing cottage were fully insulated to minimize heat loss, contributing directly to the current C2 building energy rating and future energy cost savings.
  • Airtightness membranes installed: Modern airtightness membranes were installed throughout the rooms, greatly improving the overall energy efficiency and draft control of the newly renovated heritage structure.
  • Bespoke parquet flooring: The hallway and sitting room areas feature high-quality bespoke parquet wood flooring, adding an immediate touch of sophisticated craftsmanship and visual warmth to the interior spaces.
  • High-end bathroom tiling: The bathroom has been finished with high-quality bespoke tiling, reflecting a meticulous attention to detail during the recent comprehensive interior refurbishment phase.
  • Fully updated electricals: The cottage has been completely rewired with a brand new electrical board specifically designed to allow for future expansion into the planned larger residential extension.
  • Secure gated entrance: The property is securely approached via automated electric gates, enhancing personal privacy, child safety, and vehicle security within its fully walled garden perimeter.
  • Mature landscaped grounds: Beautifully maintained grounds featuring native trees and manicured lawns create an idyllic and established natural setting that would take decades to replicate from scratch.
  • Prestigious Dublin address: Situated along the highly sought-after Porterstown Road in Castleknock, the address is widely recognized as one of the most exclusive and desirable residential locations in Dublin 15.
  • Proximity to Phoenix Park: Residents enjoy close access to the expansive green spaces of the Phoenix Park, offering unmatched opportunities for outdoor recreation, walking, and cycling near the capital.
  • Leisure amenities nearby: Immediate access to Castleknock Hotel, Castleknock Golf Club, and the scenic Strawberry Beds provides top-tier hospitality and recreational options practically on your doorstep.
  • Convenient transport links: The location offers excellent access to local bus and rail services, facilitating seamless daily commutes into the Dublin city center and across the wider metropolitan area.
  • Rapid motorway access: Being just minutes from the M50 motorway allows for effortless travel connections to Dublin Airport and the national road network for frequent drivers and commuters.
  • Local school infrastructure: The property is positioned within reach of several excellent primary and secondary schools, making it an ideal long-term prospect for growing families prioritizing education.
  • Village convenience: Castleknock Village is within easy reach, providing an array of local boutiques, gourmet restaurants, cafes, and essential services for day-to-day shopping convenience.

But keep in mind:

  • Protected structure constraints: Because the building is associated with a protected structure, buyers must strictly adhere to conservation guidelines, which may limit interior alterations or exterior material choices.
  • Substantial construction required: Achieving the full vision requires undertaking a major build project to deliver the planned extension, exposing the buyer to potential construction delays, labor shortages, and cost overruns.
  • Uncertain total project costs: While the asking price covers the site and renovated cottage, the additional capital required to build the approved 163 square meter extension could significantly inflate the total investment.
  • Current space limitations: In its existing state, the property measures only 64 square meters with two bedrooms, meaning buyers cannot comfortably occupy it as a large family home until construction is finished.
  • Construction phase disruption: Living nearby or managing the build means enduring months of heavy construction noise, dust, site traffic, and logistical headaches right outside your door.
  • Planning compliance verification: Buyers must verify that all conditions attached to the existing planning permission can be met without requiring costly modifications or a brand new planning application.
  • Potential archaeological conditions: Given the historic context of the Oatlands House estate, local planning authorities may impose archaeological monitoring conditions that could delay initial foundation excavation works.
  • Connection to utilities: Buyers should independently verify the capacity and condition of existing water, electricity, and sewage connections to ensure they can adequately support the expanded four-bedroom residence.
  • Boundary clarity check: A detailed land survey should be commissioned to verify the exact boundaries of the one-third acre plot against historical registry maps to prevent any future neighbor disputes.
  • Surface water drainage: Given the mature trees and expansive lawns, buyers should investigate the existing site drainage infrastructure to ensure heavy rainfall will not cause water pooling around the foundations.
  • Traffic and road safety: Porterstown Road can experience busy peak-time traffic flows, meaning buyers should evaluate the ease and safety of vehicular access and egress through the electric gates.
  • Future development creep: Buyers should investigate surrounding lands in the Castleknock area to ensure no unexpected high-density residential developments will compromise the tranquil rural feel of the setting.
  • Ongoing maintenance costs: Mature native trees on the site will require regular arborist assessments and ongoing leaf clearance, representing a recurring property upkeep expense for the homeowner.
  • Insurance cost complexities: Insuring a partially historic building undergoing major contemporary additions can sometimes attract higher premiums or specialized policy requirements that warrant early investigation.
  • Contractor availability risks: Securing reliable, high-end builders capable of executing complex architectural integrations with historic structures can be extremely difficult in the current construction market.
  • Energy rating limitations: Despite recent upgrades, the existing cottage retains a C2 BER rating, meaning further efficiency gains will rely entirely on the successful construction of the highly insulated new extension.
  • VAT implications on build: Buyers should consult a qualified tax advisor regarding potential VAT liabilities on new construction services and materials required to complete the approved architectural extension.
  • Financing structural projects: High street lenders may have specific lending criteria or retention clauses for properties requiring substantial construction works, potentially complicating mortgage approval processes.
  • Potential party wall issues: Any foundation or structural connection points tied to the historic gate lodge walls must be engineered carefully to avoid structural settling or cracking during the extension phase.
  • Resale liquidity risks: The unique nature of a part-historic, part-contemporary hybrid home may appeal to a specific niche of buyers, which could occasionally impact future resale timelines compared to standard estate housing.

Price positioning

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This comparison depends on limited public and listing evidence, which may be incomplete, outdated or not directly comparable. The score is not a percentage, professional valuation or guaranteed estimate. Ask an independent qualified valuer before relying on a property value.
The asking price looks slightly undervalued compared with the available evidence.
  • The asking price appears somewhat undervalued given that it combines a fully renovated heritage gate lodge with a substantial third-acre site and valuable full planning permission for a four-bedroom contemporary extension in an exclusive Dublin neighborhood.
  • Valuation signals are driven by the significant capital already expended on high-specification renovation works such as underfloor heating and bespoke finishes, alongside the major upside of having architectural plans approved for a much larger luxury home.
  • Support for this price point relies heavily on the prime location near Castleknock Village and the Phoenix Park, though potential buyers must factor in the substantial additional construction costs required to bring the approved architectural extension to completion.
  • Overall, the pricing reflects a balanced proposition that accounts for the current modest footprint of the existing structure while heavily discounting the future potential value unlocked by the active planning permission and extensive site footprint.

Build Analysis

What we know from similar construction types

  • The property is a former gate lodge to a historic estate with full planning permission for a contemporary architect-designed 4-bedroom extension, creating a combined residence of approximately 163 square meters on a c. one-third acre site.
  • As the property involves a protected structure, a buyer should verify all planning compliance, conditions, and restrictions regarding the integration of the historic cottage with the modern black zinc-roofed extension.
  • The existing 64 square meter lodge has undergone significant renovation including floor excavation, damp-proof and radon barrier installation, underfloor heating, wall drylining, insulation, and full rewiring.
  • A buyer should investigate the documentation and certification for the completed renovation works, particularly regarding moisture management in a historic building and compliance with building regulations for the structural alterations.

Heating cost*

Estimated expense to heat this property every year

  • Estimated annual heating cost: approximately €1,200 to €1,800 based on the C2 BER rating and estimated floor area.
  • The property features recent insulation upgrades and underfloor heating in the existing renovated structure, though energy efficiency will vary upon completion of the planned extended residence.

Pollution Safe

9/10

Environmental situation to investigate

  • The location appears largely free from major industrial pollution concerns, being situated in a well-established residential suburb.
  • Any historical or localized environmental risks should be verified by the buyer during standard conveyancing checks.

Flood Safe

8/10

Water overflow reports to follow up

  • The property is generally elevated away from immediate major watercourses, though proximity to the River Liffey valley means local surface water checks are advisable.
  • Buyers should consult detailed local authority flood maps to confirm the specific site risk.

Recent Local Sales

Verified residential transactions published in the previous five years

Sales on the same street or estate

No verified results were found for this group in the previous five years.

Recent sales in the wider Castleknock area

  • 113 GEORGIAN VILLAGE, CASTLEKNOCK, DUBLIN 15

    Sale date
    Declared sale price
    €2,450,000.00
  • 143 PARK DRIVE AVENUE, CASTLEKNOCK, CO DUBLIN

    Sale date
    Declared sale price
    €470,000.00
  • 10 PARK BOULEVARD, TYRELLSTOWN, DUBLIN 15

    Sale date
    Declared sale price
    €325,000.00
  • 27 LUTTREL PARK DRIVE, CASTLEKNOCK, DUBLIN 15

    Sale date
    Declared sale price
    €500,000.00
  • 9 THE GLADE, HUNTERS RUN, CLONEE DUBLIN 15

    Sale date
    Declared sale price
    €365,000.00

Source: Property Services Regulatory Authority (PSRA), Residential Property Price Register (PPR). Matching uses address information published by the PPR rather than measured map distance. It may omit nearby properties on differently named streets.

Last Sale

A confidently matched previous PPR transaction for this property

No confidently matched previous sale was found in the Property Price Register.

Buyer fees*

Associated expenses guide

  • Solicitor legal fees: approximately €1,500 to €3,500 excluding outlay and VAT.
  • Land registration fees: approximately €400 to €800 depending on the property value and registration type.
  • Property valuation fees: approximately €150 to €300 for a standard mortgage or market valuation.
  • Surveyor fees: approximately €500 to €1,500 depending on the level of detail and type of survey required.
  • Annual home insurance: approximately €400 to €900 depending on the level of buildings and contents coverage selected.

Forum Talk

What people are saying about this area

  • Locals frequently discuss the charm and appeal of living near the Strawberry Beds and the scenic banks of the River Liffey in Castleknock.
  • Residents often highlight the convenience of the area for commuting to Dublin city centre via local bus routes and nearby train stations.
  • Community forums frequently mention the proximity to the Phoenix Park as a major lifestyle benefit for families and outdoor enthusiasts.
  • Discussions in local groups often centre around the desirability and heritage character of properties along Porterstown Road and surrounding estates.

LifeFit Assessment

How well this property may suit your lifestyle

Family

7 areas
  • Young Children

    The property features an approved design for a spacious 4-bedroom family home with generous outdoor grounds on a one-third acre site, making it suitable for young children once the extension is completed.

    8/10
  • Teenagers

    With 4 bedrooms planned and a generous overall footprint upon completion, teenagers will have ample personal space and proximity to local schools and amenities in Castleknock.

    8/10
  • Multi-generational Living

    The property combines a restored 2-bedroom period cottage with plans for a contemporary extension, offering potential for flexible family arrangements though mostly suited to a single household.

    6/10
  • Single Buyers

    While the existing 64 square meter cottage has been fully renovated, the full asking price of €1,000,000 reflects the development potential of the one-third acre site and planning permission rather than a finished small starter home.

    5/10
  • Couples

    Couples looking for a project to build their dream architectural home in a prestigious Dublin 15 location will find this an attractive proposition.

    7/10
  • Empty Nesters

    The existing renovated cottage offers single-level or manageable living, though the overall offering is heavily geared toward completing the larger approved architectural build.

    7/10
  • Retirees

    Features like secure electric gates and a renovated single-level cottage appeal to retirees, though managing a major construction project might require careful consideration.

    6/10

Work

3 areas
  • Remote Working

    The extensive renovation includes upgraded electrical wiring, insulation, and comfortable living spaces well-suited for a dedicated home office setup.

    9/10
  • Hybrid Commuting

    Excellent access to the M50 and local transport links including bus and rail make commuting into Dublin city practical for hybrid workers.

    8/10
  • Retired

    The tranquil environment, secure gated entry, and proximity to local amenities make it a comfortable base for retirees.

    7/10

Practical

8 areas
  • Ageing in Place

    The existing gate lodge offers single-level accommodation potential, though buyers should verify if long-term accessibility features are fully integrated into the approved extension plans.

    7/10
  • Low Maintenance

    While the cottage has been thoroughly renovated with modern insulation and underfloor heating, the one-third acre mature garden and pending construction project will require ongoing maintenance.

    6/10
  • Secure Gated Entry

    The property is approached by secure electric gates and enclosed by walled gardens, offering exceptional privacy and security.

    10/10
  • Minimalist Design

    The proposed architectural extension features a striking modern language with dark external cladding and clean lines that complement the historic structure.

    8/10
  • Flexible Floor Plans

    Full planning permission provides a thoughtfully designed 4-bedroom layout that integrates the historic cottage with a bright, contemporary single-storey extension.

    8/10
  • Heritage Home

    Originally the historic gate lodge to Oatlands House, the property successfully preserves its heritage charm while incorporating modern performance upgrades.

    10/10
  • Ecological Setup

    The comprehensive renovation includes extensive insulation, damp-proof membranes, radon barrier, underfloor heating, and airtightness measures to improve energy efficiency.

    7/10
  • Outdoor areas

    Occupying a generous site of approximately 0.13 hectares with mature native trees, manicured lawns, and exceptional privacy.

    10/10

Interests

9 areas
  • Gardening

    The site extends to approximately one-third of an acre featuring mature native trees, manicured lawns, and private walled gardens, offering superb scope for gardening enthusiasts.

    9/10
  • Walking

    The location is close to the Phoenix Park and the scenic Strawberry Beds, providing exceptional opportunities for scenic walks.

    9/10
  • Gym

    Proximity to the Castleknock Hotel and surrounding areas ensures good access to health and fitness facilities nearby.

    7/10
  • Cycling

    The nearby Phoenix Park and accessible local road networks offer fantastic routes for cycling enthusiasts.

    8/10
  • Golf

    The property is located just minutes away from Castleknock Golf Club and Castleknock Hotel.

    9/10
  • Fishing

    Proximity to the River Liffey and the Strawberry Beds provides moderate access to local fishing spots.

    5/10
  • Horse Riding

    The semi-rural pockets of Castleknock and proximity to the Phoenix Park offer traditional settings that occasionally cater to equestrian interests.

    6/10
  • Water Sports

    Water sports facilities are limited given the inland suburban location, though the River Liffey runs nearby.

    3/10
  • Entertaining

    The approved plans feature generous open-plan living spaces seamlessly connected to landscaped gardens, ideal for hosting guests.

    8/10

Lifestyle

5 areas
  • Quiet Living

    Occupying approximately 0.13 hectares with mature native trees, manicured lawns, and walled gardens, the property offers an exceptionally private and tranquil setting.

    9/10
  • Rural Living

    Despite its close proximity to Dublin city and Castleknock Village, the generous mature plot and gate lodge setting provide a distinctly rural atmosphere.

    6/10
  • Village Living

    Castleknock Village is within easy reach, offering local conveniences, shops, and a community feel close to the property.

    8/10
  • Coastal Living

    The property is located inland in Castleknock, Dublin 15, well away from any coastal areas.

    2/10
  • Urban Living

    Excellent transport links including bus and rail provide convenient access to Dublin city centre while maintaining a peaceful suburban enclave.

    7/10

Social

6 areas
  • Community Involvement

    Situated in a prestigious and established residential pocket of Castleknock with active local community networks.

    7/10
  • Café Culture

    Castleknock Village offers a selection of local cafes and social spots within easy reach.

    7/10
  • Nightlife

    The immediate area is predominantly residential and peaceful, requiring a trip into central Dublin for extensive nightlife options.

    5/10
  • Health/Wellness groups

    Proximity to local hotels, golf clubs, and wellness amenities provides access to various health groups and classes.

    7/10
  • Networking Opportunities

    While primarily a residential setting, its upscale address in Castleknock connects well with professionals across Dublin.

    6/10
  • Tech-Hub Connectivity

    Good digital infrastructure potential combined with convenient commuting routes to Dublin's major business districts.

    7/10

Listing information

Agent
Newcombe Estates
Phone
01 861 4440
Published on HouseDelve
4 October 2026
Correction
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Property reference: HD-A31D34HouseDelve · Republic of Ireland

Report checks

Sources used: Public marketplace, Property Price Register, and grounded web research where available.

Automated quality checks: Passed

Estimate — not advice. Actual costs and outcomes can vary materially. Obtain current quotations and professional advice before making financial or property decisions.