9 Bertha Street, Ferryhill, DL17 8AZ
About 9 Bertha Street
9 Bertha Street is a mid-terrace house in Ferryhill (DL17 8AZ). It has a recorded floor area of 76 m² (around 818 sq ft), construction records dating it to 1900-1929 and council tax band A. The latest certificate (May 2021) shows a D (score 68), on the cusp of jumping into the C band. When first surveyed in January 2010 the rating was F, the property has climbed 2 bands since. Between certificates, roof efficiency went from Very Poor to Poor, hot-water efficiency went from Poor to Good and main heating went from Average to Good; while lighting dropped from Good to Average. The recommended improvements would lift it to B (score 85), a 2-band jump.
Across 2002–2021, sale prices on this property compounded at 5.7% per year. Today's modelled estimate of £114,000 sits 115.1% above the 2021 sale of £53,000. On a £-per-square-foot basis, the last sale (£65/sq ft) was about 54.3% above the typical sold price in the postcode. Last sale on file: £53,000 in September 2021. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.
Know exactly what you're buying at 9 Bertha Street
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Already flagged here
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
Energy performance
Recommended upgrades on file would lift this property by multiple EPC bands.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Hot water system upgraded
Roof insulation improved
Low energy lighting percentage decreased
Planning history
9 Bertha Street has no planning applications on record.
Notable planning nearby
1applications of note in the surrounding area
We flagged 2 things worth checking at 9 Bertha Street
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
- Recent ownership pattern worth a look
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Sales history & valuation
Sale price has at least doubled since 2002.
£114,000
Modelled from EPC, postcode comparables and a sale-price growth of 5.7% per year over 20 years.
£53,000
Growth on file: 5.7% per year over 20 years.
Sales timeline
13 September 2021Most recent
£53,000
+51.4%15 August 2021
£35,000
+94.4%over 19 years11 February 2002
£18,000
Median price across the last 5 sales in DL17 8AZ: £40,500 (2025–2024).
Nearby sales in DL17 8AZ
Everything we know about 9 Bertha Street, 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
- Recent ownership pattern worth a look
Versus other Bertha Street homes
On habitable rooms, 9 Bertha Street runs well behind the street norm.
Price per m²
£697
Street avg £688
Floor Area
76 m²
Street avg 73 m²
Habitable Rooms
3 rooms
Street avg 4 rooms
CO₂ Emissions
3.4 t/year
Street avg 4.1 t/year
Similar properties nearby
The neighbourhood at a glance
Daytime road noise here sits well below conversation level — a quiet pocket of the postcode.
Crime
5/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Rutherford Terrace — bus stop.
Closest school
0.4 km
Broom Cottages Primary & Nursery School. 7 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
47.6dB
Night-time· 23:00 – 07:00
37.4dB