What type of property is 21 Firmin Avenue, ME17 4RD?

21 Firmin Avenue, ME17 4RD is a 4-bedroom detached house, which has been extended.

What did 21 Firmin Avenue, ME17 4RD sell for?

21 Firmin Avenue, ME17 4RD last sold for £450,000 in March 2021, around 5 years ago. Land Registry has 4 sales on record going back to £195,000 in September 2000. Source: HM Land Registry.

How has the value of 21 Firmin Avenue, ME17 4RD changed over time?

Across 4 sales between September 2000 and March 2021, 21 Firmin Avenue, ME17 4RD rose from £195,000 to £450,000, a change of £255,000. That works out to roughly +4.2% per year compounded over 20 years. Source: HM Land Registry.

How energy efficient is 21 Firmin Avenue, ME17 4RD?

The current EPC rating for 21 Firmin Avenue, ME17 4RD is C with a score of 74 out of 100, lodged in September 2025. Source: EPC Register.

What is the floor area of 21 Firmin Avenue, ME17 4RD?

21 Firmin Avenue, ME17 4RD has a recorded floor area of 137 m² (1,475 sq ft), around 34 m² per bedroom. That makes it about 11% larger than the median EPC-recorded property in ME17 4RD. Source: EPC Register.

How is 21 Firmin Avenue, ME17 4RD heated?

The latest EPC at 21 Firmin Avenue, ME17 4RD records mains gas as the main heating fuel. Source: EPC Register.

What council tax band is 21 Firmin Avenue, ME17 4RD?

21 Firmin Avenue, ME17 4RD is in council tax band F. That sits towards the upper end of the band ladder, typically reflecting larger or higher-value homes.

Where is 21 Firmin Avenue, ME17 4RD located?

21 Firmin Avenue, ME17 4RD sits in Boughton Monchelsea, Maidstone, Maidstone. It falls within the ME17 postcode district in Kent.

How safe is the area around 21 Firmin Avenue, ME17 4RD?

Police records around 21 Firmin Avenue, ME17 4RD show an average of 144 reported crimes per month over the last 14 months. Violent crime makes up roughly 34% of reports, the most common category. The overall trend is broadly stable. Source: Police UK.

Which schools serve 21 Firmin Avenue, ME17 4RD?

The closest primary school to 21 Firmin Avenue, ME17 4RD is Leigh Academy Tree Tops (678m), one of 13 primaries within walking distance. The closest secondary is New Line Learning Academy (1.4km), with 3 secondaries in the surrounding area.

What is the nearest station to 21 Firmin Avenue, ME17 4RD?

The closest bus stop to 21 Firmin Avenue, ME17 4RD is Wrangleden Road, 443m away. In total there are 30 bus stops within the surrounding area.

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21 Firmin Avenue, Boughton Monchelsea, Maidstone, ME17 4RD

4 sales on record

Property type

Detached

Bedrooms

Bathrooms

Floor area

137 m²

1475 sq ft

Energy rating

Score 74

Council tax

Band F

Tenure

Owner Occupied

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Overview

About 21 Firmin Avenue

A plain-English summary derived from public records, EPC certificates, sold prices and local data.

21 Firmin Avenue is a four-bedroom detached house in Boughton Monchelsea, Maidstone, Maidstone (ME17 4RD). It has a recorded floor area of 137 m² (around 1475 sq ft), construction records dating it to 1996-2002 and council tax band F. The latest certificate (September 2025) shows a C (score 74). The rating has held steady at C across 2 certificates since May 2011. Between certificates, roof efficiency went from Good to Very Good and lighting went from Average to Good; while window efficiency dropped from Average to Poor. Records show the property has been extended at some point in its history.

Last sale on file: £450,000 in March 2021. Across the public record there are 4 sales, relatively high churn for a single property. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend. Across 2000–2021, sale prices on this property compounded at 4.2% per year. Today's modelled estimate of £506,000 is 12.4% above the 2021 sale price. On a £-per-square-foot basis, the last sale (£305/sq ft) was about 45.3% above the typical sold price in the postcode.

Specifications

What this property has

Pulled from EPC certificates, claim submissions and our property model. Empty categories are hidden — we only show what's known.

Inside

Bedrooms4
Bathrooms3
CloakroomYes
StudyYes

Outside

Private gardenRear
GarageYes

Building

Central heatingYes
Previously extendedYes

Before you decide

Everything you need to know about 21 Firmin Avenue

The true value, the hidden risks and the full sale history, in one report.

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Energy

Energy performance

Every EPC certificate filed against this property — current rating, recorded improvements, and where there's headroom to reach a higher band.

Current Certificate(1 of 2)

Sept 2025

EPC Rating

C74

Main Heating

Gas

Main Fuel

Gas

Hot Water

Good

Windows

Poor

CO2 Emissions

3.0 t/year

Occupancy

Owner Occupied

Certificate validity

Valid until 12 September 2035

8 years remaining

Property Improvements

Changes detected from historical EPC data

Sept 2025from May 2011

Roof Insulation

InsulatedWell Insulated

Loft insulation upgraded to recommended levels

Low Energy Lighting

30%100%

More low energy lighting installed

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Late 20th centuryDetached HouseEPC C

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Planning

Planning history

Applications and permits filed against 21 Firmin Avenue, Boughton Monchelsea, Maidstone, ME17 4RD, sourced from the PlanIt planning register.

21 Firmin Avenue has no planning applications on record.

But the area is active

3 notable applications nearby — larger schemes and conversions that could reshape the street. The report maps them all.

Price

Sales history & valuation

Recorded transactions, our model's current estimate, and a quick read on what neighbouring properties have sold for.

21 Firmin Avenue has more than doubled in price since the earliest registered sale in 2000.

Current estimate

£506,000

Modelled from EPC, postcode comparables and a sale-price growth of 4.2% per year over 20 years.

See how we calculated this

Last sold (2021)

£450,000

Growth on file: 4.2% per year over 20 years.

Sales timeline

16 March 2021Most recent
£450,000
+34.3%over 9 years
9 December 2011
£335,000
+34.0%over 9 years
1 August 2002
£250,000
+28.2%over 1 year
20 September 2000
£195,000

Median price across the last 5 sales in ME17 4RD: £490,000 (2026–2017).

Nearby sales in ME17 4RD

On the street

Versus other Firmin Avenue homes

Four headline reads against 9 similar houses on this street, drawn from the latest EPC and Land Registry data.

On co₂ emissions, 21 Firmin Avenue stands well clear of the street.

Price per m²

£3,285

Street avg £3,550

Below

Floor Area

137 m²

Street avg 119 m²

Strongly above

Habitable Rooms

8 rooms

Street avg 7 rooms

Strongly above

CO₂ Emissions

3.0 t/year

Street avg 4.1 t/year

Strongly above

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Comparables

Similar properties nearby

A handful of close matches in the same postcode area, ranked by likeness on bedrooms, type and floor area.

£473k

1 Brooker Close, Boughton Monchelsea

ME17 4UY

4 bed

£549k

1 Braeburn Way, Coxheath

ME17 4FU

4 bed2 bath

£382k

1 Alchins Cottages, Heath Road, Linton

ME17 4NT

4 bed1 bath

£699k

1 Amsbury Road, Coxheath

ME17 4DW

4 bed2 bath

£722k

1 Cliff Cottages, Cliff Hill, Boughton Monchelsea

ME17 4NQ

4 bed

£409k

1 Broad Drive, Boughton Monchelsea

ME17 4SW

3 bed2 bath

£395k

1 Campfield Cottages, Haste Hill Road, Boughton Monchelsea

ME17 4LR

3 bed1 bath

£315k

1 Aspian Drive, Coxheath

ME17 4JZ

3 bed2 bath

Area

The neighbourhood at a glance

A condensed read of the local area. Each tile links through to the full breakdown on the Maidstone district page.

Full Maidstone report

Daytime road noise here sits well below conversation level — a quiet pocket of the postcode.

Crime

144/mo

Steady year-on-year across the wider district.

Nearest stop

0.4 km

Wrangleden Road — bus stop.

Closest school

0.7 km

Leigh Academy Tree Tops. 16 schools nearby.

Go deeper on the local area

A Local Area report breaks down crime, transport links, schools and air quality in depth.

Noise

Road noise across the postcode

Modelled day and night-time noise levels around ME17 4RD from Defra's strategic mapping. The pin marks this postcode's centroid.

Daytime· 07:00 – 23:00

47.3dB

Low

Night-time road noise heatmap for ME17 4RD

Night-time· 23:00 – 07:00

37.2dB

Low

55 dB

60 dB

65 dB

70 dB

75 dB

80 dB

Defra Road Noise Strategic Mapping, Round 4

FAQ

Common questions

The questions buyers, sellers and homeowners most often ask about 21 Firmin Avenue, Boughton Monchelsea, Maidstone, ME17 4RD. Each answer is also embedded as structured data for search engines.