Photograph 1 of 19 of 235 Rochestown Avenue, Dun Laoghaire, Co. Dublin
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235 Rochestown Avenue, Dun Laoghaire, Co. DublinA96W8X4

€700,000

4 Bed~2 Bath~180 m²~BER D

What you'll like:

  • Generous Floor Area: Providing a spacious 180 square meters of interior space, this property offers plenty of room for growing families to live comfortably.
  • Substantial Asking Price Value: Priced at €700,000 for 180 square meters, the home offers a competitive per-square-meter cost for this established Dun Laoghaire location.
  • Active Residential Conversion Planning: Planning application reference D26A/0594/WEB is currently lodged to formalize the change of use back to a complete residential dwelling.
  • Intact Original Staircase: The presence of the original structural staircase ensures that reverting the mixed layout back to a unified family home is significantly streamlined.
  • Expansive Open-Plan Living: The large rear kitchen, living, and dining zone spans 10.00m x 4.52m, featuring a light well and double doors opening directly onto the garden.
  • Private Rear Garden Space: The property features a pleasant private rear garden with a decked area and a lawn bordered by mature hedging for outdoor privacy.
  • Off-Street Parking Convenience: The front of the house includes dedicated off-street parking and a low-maintenance pebbled garden area flanked by mature boundaries.
  • Established Local Schools: The surrounding Glenageary area is well-served by a diverse selection of highly regarded primary and secondary educational institutions.
  • Strong Commuter Connectivity: Residents enjoy easy access to the M50 motorway and wider Dublin road network alongside frequent local public transport links.
  • Proportionate Bedroom Sizes: The first-floor layout includes multiple well-proportioned rooms with built-in storage configurations suitable for family bedrooms or home offices.
  • Natural Light Influx: Extensive glazing in the entrance hall and wall-to-wall windows in the front bedrooms maximize natural daylight throughout the daytime hours.
  • Flexible Future Adaptability: The layout can continue to accommodate professional or business uses subject to permissions, offering great versatility for self-employed buyers.
  • Functional Ground-Floor WC: A guest bathroom on the ground level adds convenience for visitors while the property functions in its current mixed arrangement.
  • Modern Kitchen Fittings: The kitchen space comes equipped with fitted shaker-style units, integrated shelving, and a practical breakfast counter setup.
  • Pedestrian Side Access: A convenient side entrance allows direct movement from the front of the property straight through to the rear garden area.
  • Integrated Alarm System: The property is fitted with an alarm installation, offering an immediate baseline level of home security for new occupants.
  • Proximity to Amenities: Local shopping facilities, cozy cafés, and everyday conveniences are readily accessible within the immediate neighborhood surroundings.
  • Recreational Proximity: The coastal setting near Dun Laoghaire provides easy access to marine amenities, piers, parks, and scenic coastal walking routes.
  • Clear Historical Layout: Having historically functioned partly as a residence, the core structural rooms easily map back to traditional domestic zones.
  • Defined Outdoor Boundaries: Mature hedging along the front and rear perimeters establishes a secure, green buffer from neighboring properties and the main road.

But keep in mind:

  • Pending Planning Uncertainty: The change of use application D26A/0594/WEB is still under assessment, meaning full residential status is not yet legally guaranteed.
  • Mediocre BER Rating: The property holds a D building energy rating with an indicator of 210 kWh/m2/year, indicating that energy efficiency upgrades will likely be needed.
  • Commercial Layout Remnants: Current medical and dental surgery configurations, including multiple sinks and clinical flooring, will require costly remodeling to feel domestic.
  • Substantial Renovation Costs: Buyers must budget significantly for stripping out commercial elements, rewiring, and reconfiguring rooms back into a standard family home layout.
  • Busy Traffic Corridor: Situated directly on Rochestown Avenue, the property may experience noticeable traffic noise and congestion during peak commuting hours.
  • Dual Staircase Configuration: The coexistence of an intact original staircase and a modern spiral staircase creates spatial redundancy that requires architectural redesign.
  • Kitchen Size Constraints: At 5.31m x 1.88m max, the kitchen space is relatively narrow, which may limit major layout expansions or large-scale appliance arrangements.
  • Limited Bathroom Count: Despite its large 180 square meter footprint, the house currently lists only two bathrooms to service a potentially four-bedroom layout.
  • Commercial Financing Complexities: Securing standard residential mortgage lending can sometimes be complicated when purchasing a property with active commercial use designations.
  • Potential Development Conditions: Local council stipulations tied to planning reference D26A/0594/WEB could impose unexpected conditions or delays on the purchase timeline.
  • Linoleum Flooring Materials: Several zones rely on linoleum floor finishes, which are typically viewed as commercial-grade and will necessitate replacement with domestic flooring.
  • Front Garden Aesthetics: The low-maintenance pebbled front garden heavily serves parking needs, resulting in minimal traditional green landscaping at the front.
  • Uncertainty Over Soundproofing: Due to the building's commercial medical history, acoustic insulation between former treatment rooms should be carefully inspected.
  • Potential Retrovit Disruption: Undertaking extensive internal modifications to remove surgery partitions will cause considerable dust, noise, and temporary unlivability.
  • Possible Hidden Structural Alterations: Past commercial adaptations might have altered interior load-bearing walls, requiring structural engineer verification before walls are removed.
  • Energy Upgrade Requirements: Moving the D energy rating up to modern standards will demand capital investments in attic insulation, window upgrades, or heating systems.
  • Oil Fired Central Heating: The house relies on an oil-fired central heating system rather than cleaner natural gas mains, impacting ongoing fuel management and costs.
  • Proximity Boundary Impact: Being a semi-detached property directly beside a busy roadway means close proximity to neighbor activities and traffic emissions.
  • Unverified Compliance History: Buyers must verify that all past commercial alterations complied fully with previous building regulations and fire safety codes.
  • Resale Value Complexities: Transitioning a mixed-use asset entirely into a residential home carries transitional risks regarding local market appraisal values.

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.
  • At an asking price of seven hundred thousand euros for a one hundred and eighty square meter floor area, the property sits below typical price metrics for comparable size formats locally.
  • The mixed-use layout history and current commercial configuration require investment and successful planning execution for residential conversion, which justifies a more cautious introductory pricing tier.
  • Nearby closed transactions for houses of comparable scale on Rochestown Avenue and adjacent roads generally command higher overall figures, reflecting stronger turnkey readiness.
  • Buyers should investigate the exact costs and timeline associated with the pending change of use planning application before finalizing any financial commitments.

Build Analysis

What we know from similar construction types

  • The property is a substantial 180 m² building that has historically operated as a combination of residential accommodation and a commercial dental surgery, meaning a buyer should investigate the current structural alterations made for commercial use.
  • Permission is currently being sought for a change of use from commercial/medical to full residential use under planning reference D26A/0594/WEB, which a buyer should verify before completing a purchase to ensure full compliance.
  • The layout features former treatment rooms, a former garage conversion, and multi-sink configurations that will require reconfiguration and capital expenditure to convert back into a standard residential family home.
  • The original staircase remains intact alongside a newer spiral staircase, and a buyer should inspect both structures to assess their condition and suitability for a unified residential floor plan.
  • The building relies on oil-fired central heating and possesses a D BER rating, indicating that the thermal envelope, windows, and heating systems should be thoroughly inspected for efficiency and potential upgrade needs.

Retrofit Cost*

Possible renovating / insulating expenditure

  • The property has a D BER rating and a floor area of approximately 180 m².
  • A comprehensive deep retrofit to bring the property to a modern energy efficiency standard (such as a BER rating of B2 or higher) would typically cost between €50,000 and €90,000.
  • This estimated cost accounts for upgrading the oil-fired heating system to a heat pump, adding external or internal wall insulation, upgrading windows and doors to high-performance double or triple glazing, and improving attic insulation, alongside the necessary reconfiguration work required to return the commercial elements to residential use.

Heating cost*

Estimated expense to heat this property every year

  • Estimated annual heating cost: €2,500 to €3,500
  • Short explanation: Based on a floor area of 180 m² and a D Building Energy Rating (BER), which typically indicates higher energy consumption and heat loss compared to modern energy-efficient homes, combined with prevailing oil-fired central heating running costs.

Pollution Safe

8/10

Environmental situation to investigate

  • The property is located in an established suburban residential and commercial corridor without apparent close proximity to heavy industrial plants, active incinerators, or major legacy landfills.
  • Any historical commercial or medical use on-site should be independently investigated by the buyer to ensure no localized ground or structural concerns exist.

Flood Safe

8/10

Water overflow reports to follow up

  • Standard national flood mapping resources generally indicate a low overall probability of fluvial or coastal flooding for this section of Rochestown Avenue.
  • Buyers should verify local surface water drainage capacity and consult detailed local authority flood risk assessments as part of standard pre-purchase due diligence.

Recent Local Sales

Verified residential transactions published in the previous five years

Sales on the same street or estate

  • 139 GRANITEFIELD MANOR, ROCHESTOWN AVE, DUN LAOGHAIRE

    Sale date
    Declared sale price
    €370,000.00
  • 106 GRANITEFIELD MANOR, ROCHESTOWN AVE, DUN LAOGHAIRE

    Sale date
    Declared sale price
    €310,000.00
  • 178 ROCHESTOWN AVE, DUN LAOGHAIRE, DUBLIN

    Sale date
    Declared sale price
    €875,000.00
  • 5A SEFTON, ROCHESTOWN AVE, DUN LAOGHAIRE

    Sale date
    Declared sale price
    €860,000.00
  • 128 GRANITEFIELD MANOR, ROCHESTOWN AVE, DUN LAOGHAIRE

    Sale date
    Declared sale price
    €355,000.00

Recent sales in the wider Dun Laoghaire area

  • 3 WOODLANDS DR, DUN LAOGHAIRE, DUBLIN

    Sale date
    Declared sale price
    €855,000.00
  • 4 CASTLEGATE, OLIVER PLUNKETT ROAD, DUN LAOGHAIRE

    Sale date
    Declared sale price
    €360,000.00
  • 42 SMITHS GARDENS, YORK ROAD, DUN LAOGHAIRE

    Sale date
    Declared sale price
    €475,000.00
  • 1 ST JOSEPHS TERRACE, TIVOLI RD, DUN LAOGHAIRE

    Sale date
    Declared sale price
    €550,000.00
  • 2 YELLOW NOOK AVE, JOHNSTOWN RD, DUN LAOGHAIRE

    Sale date
    Declared sale price
    €860,000.00

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

  • Stamp duty: €7,000 (calculated at 1% of the €700,000 purchase price)
  • Solicitor legal fees: €2,000 to €3,000 (plus 23% VAT and outlays)
  • Land registration fees: €600 to €1,000 (depending on property registration type and registry mapping outlays)
  • Property valuation fees: €150 to €300
  • Surveyor fees: €500 to €1,200 (varying by structural survey depth)
  • Annual home insurance: €500 to €1,000 (depending on coverage limits and policy features)

Forum Talk

What people are saying about this area

  • Local residents frequently discuss the convenience and strong connectivity of Rochestown Avenue, noting easy access to nearby coastal suburbs like Dún Laoghaire and Dalkey.
  • Property forums and local groups highlight ongoing demand for family homes in the Glenageary area, particularly properties offering reconfiguration potential.
  • Discussions around traffic management and public transport options emphasize the proximity of multiple bus routes and the DART station.
  • There is active local interest in mixed-use properties and properties transitioning back to full residential use given current housing market trends.

LifeFit Assessment

How well this property may suit your lifestyle

Family

7 areas
  • Young Children

    The property features a generous enclosed rear garden and a large open-plan kitchen/living/dining space, which is great for young families. However, the current layout requires reconfiguration and buyers should verify the status and timeline of the full residential planning permission.

    6/10
  • Teenagers

    With four bedrooms once fully adapted back to a residential layout and a convenient location close to renowned secondary schools in the Dun Laoghaire area, there is ample space for teenagers, though current commercial elements need conversion.

    7/10
  • Multi-generational Living

    The 180 m² floor area offers decent spatial volume, and the former dental surgery layout provides distinct zones. However, converting it into a true multi-generational layout would require substantial structural redesign and verification of planning approvals.

    5/10
  • Single Buyers

    At €700,000 for 180 m² with mixed-use history, it represents a substantial project. Single buyers looking for a ready-to-move-in home might find the scale and required change of use daunting unless they intend to run a home business.

    5/10
  • Couples

    Offers an exciting opportunity for couples wanting to shape a large home or combine living space with a professional practice, subject to relevant permissions.

    6/10
  • Empty Nesters

    The size and maintenance footprint of a 180 m² property with a sizeable garden might feel excessive for empty nesters, though the single-floor elements of the former surgery offer flexible potential.

    5/10
  • Retirees

    The property features multi-level spaces and a D BER rating, meaning retirees would likely need to invest in energy upgrades and layout modifications for comfortable ageing in place.

    4/10

Work

3 areas
  • Remote Working

    With 180 m² of space and rooms previously used as a dental surgery, there is exceptional potential to configure multiple private home offices.

    8/10
  • Hybrid Commuting

    The property enjoys easy access to the M50, Dublin's wider road network, and public transport options serving Dublin City Centre.

    8/10
  • Retired

    Suitable for retirement if fully renovated, though the ongoing upkeep of a mixed-use/large layout and a D BER rating require careful consideration.

    5/10

Practical

8 areas
  • Ageing in Place

    While ground-floor rooms exist, the layout currently utilizes a spiral staircase and split levels, requiring modification to safely support long-term ageing in place.

    5/10
  • Low Maintenance

    The property requires substantial reconfiguration, planning management for change of use, and energy upgrades to improve its D BER rating.

    4/10
  • Secure Gated Entry

    Features off-street parking to the front, but lacks a secure gated entry system based on the current property details.

    3/10
  • Minimalist Design

    The current layout reflects a converted dental practice combined with a duplex setup, requiring a complete architectural overhaul to achieve a minimalist aesthetic.

    4/10
  • Flexible Floor Plans

    Highly versatile layout with structural adaptability, previously serving as a mix of residential space and a dental surgery, offering clear reconfiguration potential.

    9/10
  • Heritage Home

    Does not feature historical heritage home characteristics; it is a practical modern-era structure adapted for multi-use.

    2/10
  • Ecological Setup

    The property carries a D BER rating and oil-fired central heating, indicating that buyers should budget for energy efficiency improvements.

    3/10
  • Outdoor areas

    Includes a private rear garden with a decked area and lawn, plus off-street parking and a pebbled front garden.

    7/10

Interests

9 areas
  • Gardening

    Features a lovely, private rear garden with a decked area, lawn, and mature hedging, alongside a low-maintenance pebbled front garden.

    7/10
  • Walking

    Excellent location for walking, with easy access to local suburban streets, nearby parks, and the scenic Dun Laoghaire coastline.

    8/10
  • Gym

    The generous floor area of 180 m² provides ample room to set up a home gym space, with local fitness centers accessible in the wider area.

    6/10
  • Cycling

    Good regional road links and local paths facilitate cycling, though riding along Rochestown Avenue requires caution due to traffic volumes.

    6/10
  • Golf

    Several established golf clubs are located within the Dun Laoghaire-Rathdown area, making it convenient for golf enthusiasts.

    7/10
  • Fishing

    Proximity to the coast and Dun Laoghaire harbour offers sea fishing opportunities nearby.

    6/10
  • Horse Riding

    Urban and suburban surroundings mean equestrian facilities are limited locally and require travel further toward the foothills.

    4/10
  • Water Sports

    Dun Laoghaire is renowned for sailing, marine activities, and water sports clubs along the waterfront.

    8/10
  • Entertaining

    The expansive open-plan kitchen, living, and dining area connecting directly to the decked rear garden creates an ideal environment for hosting guests.

    8/10

Lifestyle

5 areas
  • Quiet Living

    Located on Rochestown Avenue, a prominent and established road, traffic noise can be expected, though the property benefits from mature hedging and a private rear garden.

    5/10
  • Rural Living

    This is a solidly suburban setting in Dun Laoghaire-Rathdown, close to urban conveniences, with no rural characteristics.

    2/10
  • Village Living

    Close proximity to local amenities, shopping, cafés, and restaurants in the surrounding Glenageary and Dun Laoghaire areas gives a strong community village feel.

    7/10
  • Coastal Living

    Situated in Dun Laoghaire, the property enjoys close proximity to the coast, maritime amenities, piers, and seaside walks.

    8/10
  • Urban Living

    Well served by public transport options to Dublin City Centre, with shops and services easily accessible along a busy arterial route.

    7/10

Social

6 areas
  • Community Involvement

    Set within an established residential neighborhood with active local schools, clubs, and community groups.

    7/10
  • Café Culture

    Surrounded by a strong selection of local cafés, restaurants, and everyday conveniences in Dun Laoghaire and Glenageary.

    8/10
  • Nightlife

    Local pubs and dining options are accessible nearby, with a wider array of nightlife choices available in central Dun Laoghaire and Dublin city.

    6/10
  • Health/Wellness groups

    Proximity to urban centers ensures easy access to wellness centers, fitness classes, and medical groups.

    7/10
  • Networking Opportunities

    The mixed-use zoning history and prominent roadside location offer potential for professional visibility or local networking.

    6/10
  • Tech-Hub Connectivity

    Good transport links to Dublin's major business and tech employment nodes via road and public transit.

    7/10

Listing information

Agent
Agent details not available.
Published on HouseDelve
4 September 2026
Correction
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Property reference: HD-6B315BHouseDelve · Republic of Ireland

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