3 Oak Tree Cottages, Main Street, Grendon Underwood, Aylesbury, HP18 0SH
About 3 Oak Tree Cottages
3 Oak Tree Cottages is a three-bedroom semi-detached house in Grendon Underwood, Aylesbury, Aylesbury (HP18 0SH). It has a recorded floor area of 86 m² (around 926 sq ft), construction records dating it to 1950-1966 and council tax band C. The latest certificate (May 2025) shows a D (score 62), on the cusp of jumping into the C band. The recommended improvements would push it to C (score 78). Main heating runs on oil. Our model identifies extension potential, subject to local planning policy.
2 planning records sit against the property, 0 approved, 0 refused, 2 pending. An active application for an extension is awaiting a decision. Most recent transfer was December 2025 at £370,000 — fresh data. Across 1999–2025, sale prices on this property compounded at 9.6% per year. On a £-per-square-foot basis, the last sale (£400/sq ft) was about 23.2% above the typical sold price in the postcode.
What this property has
Inside
- Bedrooms3
- Bathrooms2
- CloakroomYes
Outside
- Private gardenRear
Building
- Extension potentialPossible
Energy performance
EPC Rating
Certificate validity
Valid until 8 May 2035
Get a survey for this property
Level 3 Building Survey
Because the property has no mains gas supply, we believe a Level 3 building survey should be considered.
From £955 · Includes VAT
Planning history
There is a planning application currently awaiting a decision.
2 applications on record at 3 Oak Tree Cottages, Main Street, Grendon Underwood, Aylesbury, HP18 0SH
2 live now- Dec 2025ExtensionFullOutcome in report
Extension: Side and rear of property
Proposed demolition of existing side/rear extension, erection of new single storey side/rear extension and two storey rear extension. Formation of new vehicular access and driveway to front of property
- Documents
- 4 docs on file
- Reference
- PL/25/6240/FA
- More recent applications — locked
- ExtensionApr 2026Decision
Unlock 3 Oak Tree Cottages, Main Street, Grendon Underwood, Aylesbury, HP18 0SH's full planning history
You're seeing the shape of it. The report has the substance.
- Every decision — granted, refused or withdrawn
- All 2 applications on this property in full
- The 8 documents, officer reports & conditions
- What the pattern means for extending or converting here
One time fee only - money back guarantee
Sales history & valuation
3 Oak Tree Cottages has more than quadrupled in price since its earliest registered sale in 1999.
£371,000
Modelled from EPC, postcode comparables and a sale-price growth of 9.6% per year over 27 years.
£370,000
Growth on file: 9.6% per year over 27 years.
Sales timeline
5 December 2025Most recent
£370,000
+1061.7%over 26 years28 March 1999
£31,850
Median price across the last 5 sales in HP18 0SH: £403,000 (2025–2020).
Nearby sales in HP18 0SH
Briar House, Main Street, Grendon Underwood, Aylesbury, HP18 0SH
Sold May 2025
£640,0005 Oak Tree Cottages, Main Street, Grendon Underwood, Aylesbury, HP18 0SH
Sold May 2024
£455,0007 Oak Tree Cottages, Main Street, Grendon Underwood, Aylesbury, HP18 0SH
Sold Dec 2021
£360,0002 Oak Tree Cottages, Main Street, Grendon Underwood, Aylesbury, HP18 0SH
Sold Apr 2021
£403,000Woodville, Main Street, Grendon Underwood, Aylesbury, HP18 0SH
Sold Jul 2020
£387,000
Versus other Main Street homes
Years Held for 3 Oak Tree Cottages lags the street by a wide margin.
Price per m²
£4,302
Street avg £3,638
Floor Area
86 m²
Street avg 104 m²
Habitable Rooms
4 rooms
Street avg 6 rooms
CO₂ Emissions
4.3 t/year
Street avg 6.2 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
77/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Oak Tree Cottages — bus stop.
Closest school
1.0 km
Grendon Underwood School. 1 school nearby.
Go deeper on the local area
A Local Area report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode

Daytime· 07:00 – 23:00
42.2dB

Night-time· 23:00 – 07:00
35.6dB







