6-bedroom detached house · AL5 2EE
For saleListed 18 days
Opportunity summary
See Archie’s verdict, returns by strategy and what to check before viewing.
About
This house has the location and the opportunity. On one of Harpenden's most sought-after residential roads, this substantial home occupies a plot of a scale that rarely becomes available.
The house itself extends to over 3,300 sq ft across three floors, with six bedrooms and generous living space. This isn't a house where everything needs to happen on day one.
There is plenty of space to move in, make improvements gradually and decide over time exactly what you want the house to become. And there is considerable potential.
The property is locally listed, so this is not an opportunity to clear the site and start again.
Instead, it offers something arguably more interesting: The chance to work with an established house, improving and potentially extending the existing building to create a substantial long-term home, subject to the necessary planning and other consents.
The current layout already provides a great deal of flexibility.
A central entrance hall leads to a large bright drawing room with fireplace, a separate dining room to the front, a second sitting room and kitchen/breakfast room.
There is also a conservatory, utility room and cloakroom.
These are proper, well-proportioned rooms rather than a succession of smaller spaces, and there is enough accommodation to live very comfortably while considering a future scheme.
For some buyers, updating the existing house may be enough. Others will immediately see the possibilities offered by the scale of the plot and the footprint already here.
Four bedrooms occupy the first floor, including a generous principal bedroom with dressing room and en suite bathroom.
Two further bedrooms and a shower room are arranged across the second floor, giving six bedrooms in total. Outside is where the property really sets itself apart.
The overall plot measures approximately 200 ft by 115 ft, with extensive mature gardens surrounding the house on three sides.
Large lawns, established trees and planting create a wonderful sense of space, with a swimming pool, summer house, terraces and a detached double garage with studio to the rear already within the grounds.
Plots of this scale are increasingly difficult to find in Harpenden, particularly on Park Avenue North.
It is the combination of location, land and the existing house that makes this such an unusual proposition.
Park Avenue North has long been regarded as one of Harpenden's most desirable residential addresses, within easy reach of the town centre, station, excellent schools and open spaces.
The High Street is approximately 0.6 miles away, while Harpenden station is around a mile from the house.
This is a house to buy with both the present and the future in mind: Update it, live in it, get to know it and then decide just how far you want to take it.
Material Information: The property is locally listed, recognising its architectural and local interest.
This does not prevent alterations or extensions, although the property cannot be demolished, any proposals would be subject to the necessary planning consents.
A minor subsidence issue was noted in September 2025 which has subsequently been mitigated by insurers. Ask agent for further details. Tenure: Freehold Council Band Tax: H Local Authority: St Albans
Value & comps
No previous sales on record.
Returns
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We're still gathering serviced-accommodation data for this area.
Archie refurb estimate: a Pro feature
0.0% below asking
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Deal
Properties like this can earn 2–3x BTL yields when converted to HMO, with retrofit costs around £10k/room. Sign in to see the full tier, yield projection, and cost breakdown.
Commercial properties like this can earn 30-50% higher yields when converted to residential under Class MA / Q / P / PA, with prior approval costing ~GBP 96/unit. Sign in to see the recommended route, yield uplift, and cost breakdown.
BRRR-suited properties can recycle 80-100% of investor capital on refi, leaving a high-yielding rental with most of the money out. Sign in to see the refurb cost stack, ARV projection, and refinance maths.
Detached + large garden = sub-division play. Pro tier unlocks the tier badge, plot size, uplift estimate, and regional land benchmark.
Short-lease flats trade at deep discount, but extending under the 1993 Act often costs far less than the discount. Pro tier unlocks the tier badge, premium breakdown, long-lease ARV and arbitrage maths.
See projected short-stay revenue vs a vanilla BTL for this property.
See real sub-let margins (HMO room rates & SA nightly rates) vs the landlord rent.
Area
Agent & docs
FAQ
About 57, Park Avenue North, Harpenden
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