Boundary House, Lady Margaret Road, Ascot, SL5 9QH
About Boundary House
Boundary House is a six-bedroom detached house in Ascot (SL5 9QH). It has a recorded floor area of 725 m² (around 7804 sq ft), construction records dating it to 1950-1966 and council tax band H. The latest certificate (October 2015) returns a high B (score 88), putting the home a stone's throw from an A rating. When first surveyed in May 2013 the rating was E, the property has climbed 3 bands since. Between certificates, wall efficiency went from Poor to Very Good, window efficiency went from Average to Very Good and hot-water efficiency went from Poor to Good. The latest certificate is from October 2015, so improvements made since then won't be reflected. Other recorded features include a balcony.
Across 2002–2020, sale prices on this property compounded at 8.5% per year. Today's modelled estimate of £2,995,000 is 22.7% below the 2020 sale of £3,875,000, a rare downward gap that often correlates with deferred maintenance or unfinished works. On a £-per-square-foot basis, the last sale (£497/sq ft) was about 19% above the typical sold price in the postcode. At 725 m² the property is well over the postcode median (142 m² across 34 EPCs), placing it in the larger end of the local stock. Its energy rating outperforms most of the postcode (better than 76% of similar EPCs). Most recent transfer: January 2020 at £3,875,000. Across the public record there are 4 sales, relatively high churn for a single property. 6 planning records sit against the property, 5 approved, 1 refused.
What this property has
Inside
- Bedrooms6
- Bathrooms4
- Open-plan layoutYes
- Dining roomYes
- EnsuiteYes
Outside
- Private gardenWest-facing
- GarageYes
- BalconyYes
Building
- Heating systemElectric
Energy performance
Boundary House's carbon output runs well above what efficient homes in the postcode produce.
EPC Expired
This certificate is over 10 years old and is no longer valid.Expired 12 Oct 2025
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Hot water system upgraded
High performance glazing installed
Cavity wall insulation installed
Floor insulation added or improved
Planning history
Boundary House has been through 5 approved planning applications — a well-evolved property.
- Nov 2014ConditionsIn report
Details required by condition 2 (materials) of planing permission 14/02276 for the erection of dwelling and associated works following demolition of existing buildings
- Documents
- 4 docs on file
- Reference
- 14/03372/CONDIT
- Sept 2014Demolition And RebuildFullIn report
Erection of dwelling and associated works following demolition of existing buildings. Amendment to planning permission 13/03726
- Documents
- 14 docs on file
- Reference
- 14/02276/FULL
We flagged 1 thing worth checking at Boundary House
Independent checks surfaced things a buyer would want to understand before offering. The report explains each one in full, with the underlying data and what to ask.
- Larger development activity nearby
30-day money-back guarantee
Sales history & valuation
Latest sale on Boundary House was the highest on Land Registry record across the postcode.
£2,995,000
Modelled from EPC, postcode comparables and a sale-price growth of 8.5% per year over 17 years.
£3,875,000
Growth on file: 8.5% per year over 17 years.
Sales timeline
7 January 2020Most recent
£3,875,000
+159.2%over 12 years30 November 2007
£1,495,000
+30.0%over 1 year30 November 2005
£1,150,000
+21.1%over 3 years5 November 2002
£950,000
Median price across the last 5 sales in SL5 9QH: £1,165,000 (2025–2022).
Nearby sales in SL5 9QH
Clareways, Flat 10, Lady Margaret Road, Ascot, SL5 9QH
Sold Oct 2025
£650,000Henzelian House, Lady Margaret Road, Ascot, SL5 9QH
Sold May 2024
£2,118,000Laggan House, Apartment 1, Lady Margaret Road, Ascot, SL5 9QH
Sold Nov 2023
£1,430,000Clareways, Flat 8, Lady Margaret Road, Ascot, SL5 9QH
Sold Aug 2023
£497,000Laggan House, Apartment 6, Lady Margaret Road, Ascot, SL5 9QH
Sold Aug 2022
£1,165,000
Versus other Lady Margaret Road homes
Floor Area for Boundary House runs comfortably ahead of the street norm.
Price per m²
£5,345
Street avg £5,360
Floor Area
725 m²
Street avg 369 m²
CO₂ Emissions
7.5 t/year
Street avg 9.3 t/year
Years Held
6 years
Street avg 14 years
Similar properties nearby
1 Chanctonbury Drive
SL5 9PT
1 Alpine Close, Hancocks Mount
SL5 9WB
1 Elm Park, Sunningdale
SL5 9RE
1 Cheniston Cottages, Priory Road, Sunningdale
SL5 9RJ
1 Armitage Court Cottages, St Marys Hill
SL5 9AU
1 Elizabeth Gardens
SL5 9BJ
1 Cordes Grove
SL5 9GQ
1 Charters Road
SL5 9QF
The neighbourhood at a glance
Rail-style transport is unusually close for this postcode.
Crime
6/mo
Steady year-on-year across the wider district.
Nearest stop
0.2 km
Charters Road — bus stop.
Closest school
0.9 km
Holy Trinity CofE Primary School, Sunningdale. 5 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode

Daytime· 07:00 – 23:00
49.9dB

Night-time· 23:00 – 07:00
41.1dB







