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17 Glanselsig Street, Blaencwm, Treorchy, CF42 5EB

Property type
Semi-detached
Habitable rooms
4
From EPC
Floor area
90 m²
969 sq ft
Energy rating
C
Score 78
Council tax
Band A
Tenure
Owner Occupied
Overview

About 17 Glanselsig Street

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

17 Glanselsig Street is a semi-detached house in Blaencwm, Treorchy, Treorchy (CF42 5EB). It has a recorded floor area of 90 m² (around 969 sq ft), construction records dating it to 1900-1929 and council tax band A. The latest certificate (June 2025) shows a C (score 78), near the top of the C band. When first surveyed in December 2017 the rating was D, the property has climbed 1 band since. Between certificates, roof efficiency went from Very Poor to Good and lighting went from Average to Very Good. The recommended improvements would push it to B (score 90).

At 90 m² the property is well over the postcode median (64 m² across 17 EPCs), placing it in the larger end of the local stock. Across 2005–2018, sale prices on this property compounded at -1.8% per year. Today's modelled estimate of £144,000 sits 170.7% above the 2018 sale of £53,195. On a £-per-square-foot basis, the last sale (£55/sq ft) was about 34% below the postcode norm. Sold October 2018 for £53,195.

Before you offer

Know exactly what you're buying at 17 Glanselsig 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

Signs of HMO activity in the area
£14.99
Trusted by UK homebuyers

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 4)
Jun 2025

EPC Rating

A
B
C
C78
D
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Good
CO2 Emissions
4.0 t/year
Occupancy
Owner Occupied

Property Improvements

Changes detected from historical EPC data

Aug 2019from Dec 2017
EPC improved fromD55toE48
Low Energy Lighting
44%83%

More low energy lighting installed

Mar 2023from Aug 2019
EPC improved fromE48toD60
Heating Controls
Prog + TRVsFull

Heating controls upgraded for better temperature management

Roof Insulation
UninsulatedInsulated

Roof insulation improved

Renewable Energy
NoneSolar PV

Solar PV panels (33 kWp) installed

Jun 2025from Mar 2023
EPC improved fromD60toC78
Planning

Planning history

Applications and permits filed against 17 Glanselsig Street, Blaencwm, Treorchy, CF42 5EB, sourced from the PlanIt planning register.

17 Glanselsig Street has no planning applications on record.

Notable planning nearby

6applications of note in the surrounding area

Before you offer

We flagged 1 thing worth checking at 17 Glanselsig 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.

  • Signs of HMO activity in the area
£14.99

30-day money-back guarantee

Price

Sales history & valuation

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

17 Glanselsig Street's sale-price growth has lagged the wider UK trajectory across its history on file.

Current estimate

£144,000

Modelled from EPC, postcode comparables and a sale-price growth of -1.8% per year over 14 years.

See how we calculated this
Last sold (2018)

£53,195

Growth on file: -1.8% per year over 14 years.

Sales timeline

  1. 4 October 2018Most recent

    £53,195

    -21.8%over 13 years
  2. 18 February 2005

    £68,000

Median price across the last 5 sales in CF42 5EB: £80,500 (2024–2021).

Before you offer

Everything we know about 17 Glanselsig 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

  • Signs of HMO activity in the area
£14.99
Trusted by UK homebuyers
Preview of the full property report
On the street

Versus other Glanselsig Street homes

Four headline reads against 17 similar houses on this street, drawn from the latest EPC and Land Registry data.

Price per m² for 17 Glanselsig Street lags the street by a wide margin.

Price per m²

£591

Street avg £1,202

Strongly below

Floor Area

90 m²

Street avg 70 m²

Strongly above

Habitable Rooms

4 rooms

Street avg 5 rooms

Below

CO₂ Emissions

4.0 t/year

Street avg 4.3 t/year

On par
Area

The neighbourhood at a glance

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

Crime

5/mo

Steady year-on-year across the wider district.

Nearest stop

0.1 km

Blaencwm Post Office — bus stop.

Go deeper on the local area

The full report breaks down crime, transport links, schools and air quality in depth.

FAQ

Common questions

The questions buyers, sellers and homeowners most often ask about 17 Glanselsig Street, Blaencwm, Treorchy, CF42 5EB. Each answer is also embedded as structured data for search engines.