3 bed flat for sale Hillside Park, Sunningdale, Ascot, Berkshire, SL5
Added on 16/09/2026
About this property
A three bedroom luxury penthouse apartment situated on an exclusive gated development in the heart of Sunningdale. The property is located on the third floor accessed directly from the private lift and is formed around a central courtyard terrace. Reception space is generous with a large double aspect drawing room which leads through to a sitting / dining room and beyond to the kitchen.
Floorplan
Price guide
£506 per sq ft, below the middle of recent sales in SL5 (£399–£708, 10th–90th percentile, 665 sales over 24 months).
Lowest and highest are the 10th and 90th percentiles of 665 homes sold in SL5 over the last 24 months. This home's figure uses its asking price. All sold £/sq ft in SL5 →
Location
Hillside Park, Sunningdale, Ascot, Berkshire, SL5, SL5 9RP
- Council tax
- Band D (Approx £1,953/year)The agent has not stated the band, so band D is shown as the local reference: Windsor and Maidenhead's 2026/27 area average, including the typical parish precept. The actual band and any discounts change the bill.
Mortgage and stamp duty
A £1,125,000 mortgage. Most lenders would want a household income of about £250,000 to support it.
A guide only, for a capital repayment mortgage. The rate you are offered and what you can borrow depend on your circumstances and a full application with a lender or broker. Your home may be repossessed if you do not keep up repayments on your mortgage.
Historic sold prices nearby
HM Land Registry sales in SL5 9RP. Floor areas from Energy Performance Certificates where matched.
| Address | Type | Sold | Size | Size | £/sq ft | Price |
|---|---|---|---|---|---|---|
| Flat 1, Richmond House, Hillside Park Flat / maisonette | Flat / maisonette | Mar 2025 | 1,259 sq ft £476/sq ft | 1,259 sq ft | £476 | £600,000 |
| Flat 2, Fisher House, Hillside Park Flat / maisonette | Flat / maisonette | Mar 2025 | 1,281 sq ft £527/sq ft | 1,281 sq ft | £527 | £675,000 |
| Flat 2, Beaufort House, Hillside Park Flat / maisonette | Flat / maisonette | Nov 2024 | 1,281 sq ft £527/sq ft | 1,281 sq ft | £527 | £675,000 |
| Flat 4, Beaufort House, Hillside Park Flat / maisonette | Flat / maisonette | Jan 2024 | 1,270 sq ft £453/sq ft | 1,270 sq ft | £453 | £575,000 |
| Hillside Court, Hillside Park Detached | Detached | Jun 2023 | — | — | — | £1,600,000 |
| Flat 5, Richmond House, Hillside Park Flat / maisonette | Flat / maisonette | Jun 2022 | 2,454 sq ft £418/sq ft | 2,454 sq ft | £418 | £1,025,000 |
| Hillside Cottage, Hillside Park Detached | Detached | Oct 2020 | — | — | — | £1,150,000 |
| Flat 3, Fisher House, Hillside Park Flat / maisonette | Flat / maisonette | Dec 2019 | 1,324 sq ft £491/sq ft | 1,324 sq ft | £491 | £650,000 |
Area insights
The neighbourhood around this property.



