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517a, Mezzanine Floor Flat, Finchley Road, London, NW3 7BB

Property type
Mid terrace
Floor 1st
Habitable rooms
2
From EPC
Floor area
54 m²
581 sq ft
Energy rating
E
Score 52
Tenure
Private Rental
Overview

About 517a

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

517a is a mid-terrace house in London (NW3 7BB). It has a recorded floor area of 54 m² (around 581 sq ft) and construction records dating it to 1900-1929. At 54 m² this is the 3rd smallest of 5 units on EPC record in 517a, where floor areas span 42–56 m². The building's EPC ratings span E to D, with this unit at the bottom. On EPC score it ranks last in the building (52 versus a best of 58). The latest certificate (November 2019) shows an E (score 52), well below the UK norm with real room to improve. Earlier certificates rated it D (March 2009); the latest reading is one band lower. Between certificates, window efficiency went from Very Poor to Average; while wall efficiency dropped from Average to Very Poor. The recommended improvements would push it to D (score 66). Main heating runs on electricity.

It lags the bulk of the postcode on energy efficiency (less efficient than 83% of similar EPCs).

Before you offer

Know exactly what you're buying at 517a

Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.

Already flagged here

Larger development activity nearby
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Valuation

against the asking price

Risks

planning & flood

Sold prices

similar homes nearby

Trends

the local market

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)
Nov 2019

EPC Rating

A
B
C
D
E
E52
F
G
Main Heating
Electric & Gas
Main Fuel
Electric
Hot Water
Very Poor
Windows
Average
CO2 Emissions
2.9 t/year
Occupancy
Rented

Property Improvements

Changes detected from historical EPC data

Nov 2019from Mar 2009
EPC improved fromD64toE52
Heating System
Room HeatersGas Boiler

Upgraded to gas central heating

Heating Controls
ThermostatFull

Heating controls upgraded for better temperature management

Hot Water
InstantaneousMain System

Hot water system upgraded

Windows
SingleFull Double

Single glazing replaced with double or better glazing

Planning

Planning history

Applications and permits filed against 517a, Mezzanine Floor Flat, Finchley Road, London, NW3 7BB, sourced from the PlanIt planning register.

517a has no planning applications on record.

Notable planning nearby

5applications of note in the surrounding area

Before you offer

We flagged 1 thing worth checking at 517a

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
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Price

Sales history & valuation

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

517a has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.

Current estimate

£488,000

Modelled from EPC, postcode comparables.

See how we calculated this

No sales recorded with HM Land Registry

That can mean the property has never traded since the registry began publishing in 1995, was a new build that hasn't been registered yet, or is held in the same hands long-term.

Median price across the last 5 sales in NW3 7BB: £500,000 (2024–2011).

Before you offer

Everything we know about 517a, 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
£14.99
Trusted by UK homebuyers
Preview of the full property report
On the street

Versus other Finchley Road homes

Four headline reads against 29 similar flats on this street, drawn from the latest EPC and Land Registry data.

517a is notably below the street on epc rating.

EPC Rating

52 (E)

Street avg 64 (D)

Strongly below

Floor Area

54 m²

Street avg 56 m²

On par

CO₂ Emissions

2.9 t/year

Street avg 2.7 t/year

Below

Habitable Rooms

2 rooms

Street avg 3 rooms

Below
Area

The neighbourhood at a glance

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

Rail-style transport is unusually close for this postcode.

Crime

6/mo

Rising year-on-year across the wider district.

Nearest stop

0.0 km

Lyncroft Gardens NW6 — bus stop.

Closest school

0.3 km

Emmanuel Church of England Primary School. 59 schools nearby.

Go deeper on the local area

The full 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 NW3 7BB from Defra's strategic mapping. The pin marks this postcode's centroid.
Daytime road noise heatmap for NW3 7BB

Daytime· 07:00 – 23:00

53.3dB

Low
Night-time road noise heatmap for NW3 7BB

Night-time· 23:00 – 07:00

43.0dB

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 517a, Mezzanine Floor Flat, Finchley Road, London, NW3 7BB. Each answer is also embedded as structured data for search engines.