Forest Grange Manor, South Wing, Forest Grange, Forest Road, Colgate, Horsham, RH12 4TG
About Forest Grange Manor
Forest Grange Manor is a six-bedroom mid-terrace house in Colgate, Horsham, Horsham (RH12 4TG). It has a recorded floor area of 483 m² (around 5199 sq ft), construction records dating it to 1900-1929 and council tax band H. The latest certificate (September 2024) shows a D (score 58), a step below the typical UK home. When first surveyed in May 2010 the rating was G, the property has climbed 3 bands since. Between certificates, wall efficiency went from Very Poor to Poor, window efficiency went from Very Poor to Poor and hot-water efficiency went from Poor to Average. Main heating runs on oil. Other recorded features include notable views.
Untraded for 27 years, with the last transfer in November 1999. At 483 m² the property is well over the postcode median (116 m² across 8 EPCs), placing it in the larger end of the local stock. Its energy rating outperforms most of the postcode (better than 75% of similar EPCs). 6 bedrooms is on the larger side for this postcode, where 3 is the typical count. Across 1995–1999, sale prices on this property compounded at 21.8% per year. Today's modelled estimate of £2,198,000 sits 215.4% above the 1999 sale of £697,000. On a £-per-square-foot basis, the last sale (£134/sq ft) was about 49.9% below the postcode norm. 5 planning records sit against the property, 3 approved, 2 refused. Past consents include partial demolition and an extension, meaningful when judging how the property has evolved. The record references listed-building consent, which constrain future alterations.
Know exactly what you're buying at Forest Grange Manor
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Already flagged here
Launch offer · save £5
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
What this property has
Inside
- Bedrooms6
- Bathrooms4
- Dining roomYes
Outside
- Communal gardenYes
- Garagedouble
- Notable viewsYes
Energy performance
Forest Grange Manor's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Hot water system upgraded
Windows upgraded, improving insulation
Wall insulation improved
More low energy lighting installed
Planning history
Planning history includes recorded demolition works, indicating a major rebuild phase at this address.
- Mar 2019DemolitionFullIn report
Demolition of existing gazebo and erection of new garden pavilion and garden steps.
- Agent
- Whaleback
- Documents
- 14 docs on file
- Reference
- DC/19/0219
- Dec 2012ExtensionHeritageIn report
Extension: Single storey · Side of property
Single storey side extension, alteration and refurbishment works to create a new kitchen, utility area and family room and minor modification works to bedrooms and bathrooms on other floors (Listed Building Consent)
- Agent
- ADM Architects
Listed- Documents
- 32 docs on file
- Reference
- DC/12/1972
We flagged 1 thing worth checking at Forest Grange Manor
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
Sale price has at least doubled since 1995.
£2,198,000
Modelled from EPC, postcode comparables and a sale-price growth of 21.8% per year over 4 years.
£697,000
Growth on file: 21.8% per year over 4 years.
Sales timeline
2 November 1999Most recent
£697,000
+114.5%over 3 years22 December 1995
£325,000
Median price across the last 5 sales in RH12 4TG: £450,000 (2023–2015).
Nearby sales in RH12 4TG
Forest Grange Manor, West Wing, Forest Grange, Forest Road, Colgate, Horsham, RH12 4TG
Sold Dec 2023
£1,600,0006 The Courtyard, Forest Grange, Forest Road, Colgate, Horsham, RH12 4TG
Sold Feb 2021
£450,000Forest Grange Manor, The Mews, Forest Grange, Forest Road, Colgate, Horsham, RH12 4TG
Sold Apr 2020
£572,0005 The Courtyard, Forest Grange, Forest Road, Colgate, Horsham, RH12 4TG
Sold Sept 2015
£395,00010 The Courtyard, Forest Grange, Forest Road, Colgate, Horsham, RH12 4TG
Sold Jun 2015
£415,000
Everything we know about Forest Grange Manor, in one report
What it's really worth, what could be wrong, and the planning, sales and area data in full.
What we flagged
- Larger development activity nearby

Versus other Forest Grange homes
On price per m², Forest Grange Manor runs well behind the street norm.
Price per m²
£1,443
Street avg £3,653
Floor Area
483 m²
Street avg 171 m²
Habitable Rooms
9 rooms
Street avg 6 rooms
CO₂ Emissions
17.0 t/year
Street avg 7.4 t/year
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The neighbourhood at a glance
Daytime road noise here sits well below conversation level — a quiet pocket of the postcode.
Crime
2/mo
Steady year-on-year across the wider district.
Nearest stop
1.0 km
Forest Road — bus stop.
Closest school
1.9 km
Leechpool Primary School. 10 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
40.0dB

Night-time· 23:00 – 07:00
35.0dB