9 bed house for sale Westmill, Hertfordshire, SG9 9LY
Added on 16/09/2026
About this property
A magnificent Grade II Listed house set in beautiful gardens with view over rolling parkland, with Queen Anne origins and sensitive 20th century redesign by Raymond Erith and Quinlan Terry. Situated on the outskirts of a picturesque and popular Hertfordshire village, The Dower House is a historic home whose architecture, interiors and gardens sit in effortless harmony. Believed to date substantially from the Queen Anne period, the east façade was sympathetically rebuilt and the interior re modelled in the 1960s by the famous architect Raymond Erith on the instruction of the then owner John Profumo achieving the graceful symmetry, light and balance that define it today.
- Property type
- House
- Bedrooms
- 9
- Bathrooms
- 5
- Floor area
- 9,963 sq ft
- Tenure
- Freehold
- Council tax
- Band H (Approx £4,910/year)East Hertfordshire's 2026/27 area average, including the typical parish precept for band H. Your bill may differ: single-person and other discounts may apply.
- Postcode
- SG9 9LY
Key features
- Nine bedrooms, five bathrooms and six reception rooms over three floors with two staircases, plus cellars/wine storage
- Elegant rear suite of interconnecting reception rooms; additional library, sitting and music rooms
- Principal suite with dressing room/bathroom; guest suite with dressing room/extra bedroom; six further bedrooms and three bathrooms across first and second floors
- 2.71 acre gardens with historic walled garden, formal beds, lawns, fruit/veg garden, pool and tennis court; further 3.55 acre paddock
- Extensive outbuildings including garages, barn annexe with kitchen/bathroom, pool house, greenhouse and garden sheds
Floorplan
Price guide
£321 per sq ft, below almost all recent sales in SG9 (£349–£560, 10th–90th percentile, 258 sales over 24 months).
Lowest and highest are the 10th and 90th percentiles of 258 homes sold in SG9 over the last 24 months. This home's figure uses its asking price.
Location
Westmill, Hertfordshire, SG9 9LY
Sold prices in SG9
HM Land Registry sales in SG9 — none recorded yet for SG9 9LY. Floor areas from Energy Performance Certificates where matched.
| Address | Type | Sold | Size | Size | £/sq ft | Price |
|---|---|---|---|---|---|---|
| 47, Snells Mead SG9 9JH Semi-detached | Semi-detached | Jul 2026 | 1,249 sq ft £424/sq ft | 1,249 sq ft | £424 | £530,000 |
| 15, Downhall Ley SG9 9JT Terraced | Terraced | Jul 2026 | 570 sq ft £517/sq ft | 570 sq ft | £517 | £295,000 |
| 41, Wyddial Road SG9 9AT Semi-detached | Semi-detached | Jul 2026 | 958 sq ft £462/sq ft | 958 sq ft | £462 | £442,500 |
| 10, Olvega Drive SG9 9FJ Semi-detached | Semi-detached | Jul 2026 | 1,141 sq ft £386/sq ft | 1,141 sq ft | £386 | £440,000 |
| 4, Castle Cottages SG9 0BW Semi-detached | Semi-detached | Jul 2026 | 969 sq ft £511/sq ft | 969 sq ft | £511 | £495,500 |
| 11, Watson House, Parker Drive SG9 9GN Flat / maisonette | Flat / maisonette | Jul 2026 | 667 sq ft £195/sq ft | 667 sq ft | £195 | £130,000 |
| Watford House SG9 9LL Detached | Detached | Jul 2026 | — | — | — | £2,350,000 |
| 38, London Road SG9 9JW Terraced | Terraced | Jul 2026 | 1,324 sq ft £465/sq ft | 1,324 sq ft | £465 | £615,000 |
Area insights
The neighbourhood around this property.



