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21 St Mary Street, Monmouth, NP25 3DB

4 planning records
Property type
Mid terrace
Habitable rooms
8
From EPC
Floor area
208 m²
2239 sq ft
Energy rating
D
Score 65
Tenure
Owner Occupied
Overview

About 21 St Mary Street

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

21 St Mary Street is a mid-terrace house in Monmouth (NP25 3DB). It has a recorded floor area of 208 m² (around 2239 sq ft) and construction records dating it to 1900-1929. The latest certificate (May 2022) shows a D (score 65), on the cusp of jumping into the C band. The recommended improvements would lift it to B (score 81), a 2-band jump.

At 208 m² the property is well over the postcode median (76 m² across 28 EPCs), placing it in the larger end of the local stock. 4 planning records sit against the property, 4 approved, 0 refused. Past consents include an extension, new windows and HMO conversion, meaningful when judging how the property has evolved. Across 2019–2022, sale prices on this property compounded at 50.8% per year. On a £-per-square-foot basis, the last sale (£368/sq ft) was about 101.4% above the typical sold price in the postcode. Most recent transfer: November 2022 at £825,000. That sale was during the post-pandemic price surge, when transactions cleared materially above pre-2020 trend.

Before you offer

Know exactly what you're buying at 21 St Mary 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

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.

21 St Mary Street's carbon output runs well above what efficient homes in the postcode produce.

EPC Rating

A
B
C
D
D65
E
F
G
Main Heating
Gas
Main Fuel
Gas
Hot Water
Good
Windows
Poor
CO2 Emissions
8.2 t/year
Occupancy
Owner Occupied
Planning

Planning history

Applications and permits filed against 21 St Mary Street, Monmouth, NP25 3DB, sourced from the PlanIt planning register.

21 St Mary Street has been through 4 approved planning applications — a well-evolved property.

  1. May 2021
    Conditions
    In report

    Discharge of conditions 4, 7, 9 and 10 relating to DM/2019/02042.

    Documents
    8 docs on file
    Reference
    DM/2021/00268
    View planning record
  2. Apr 2020
    ExtensionConditions
    In report

    Extension: Single storey · Rear of property

    To retain the existing single storey extension to the rear of the property and enlarge the existing adjacent door opening.

    Documents
    10 docs on file
    Reference
    DM/2019/02042
    View planning record
Before you offer

We flagged 1 thing worth checking at 21 St Mary 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
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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.

Latest sale on 21 St Mary Street was the highest on Land Registry record across the postcode.

Current estimate

£757,000

Modelled from EPC, postcode comparables and a sale-price growth of 50.8% per year over 3 years.

See how we calculated this
Last sold (2022)

£825,000

Growth on file: 50.8% per year over 3 years.

Sales timeline

  1. 14 November 2022Most recent

    £825,000

    +266.7%over 3 years
  2. 16 September 2019

    £225,000

Median price across the last 5 sales in NP25 3DB: £295,000 (2024–2022).

Before you offer

Everything we know about 21 St Mary 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
£14.99
Trusted by UK homebuyers
Preview of the full property report
On the street

Versus other St Mary Street homes

Four headline reads against 15 similar houses on this street, drawn from the latest EPC and Land Registry data.

On habitable rooms, 21 St Mary Street stands well clear of the street.

Price per m²

£3,966

Street avg £2,747

Strongly above

Floor Area

208 m²

Street avg 118 m²

Strongly above

Habitable Rooms

8 rooms

Street avg 5 rooms

Strongly above

CO₂ Emissions

8.2 t/year

Street avg 5.6 t/year

Strongly below
Area

The neighbourhood at a glance

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

Crime

1/mo

Steady year-on-year across the wider district.

Nearest stop

0.1 km

Agincourt Square — 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 21 St Mary Street, Monmouth, NP25 3DB. Each answer is also embedded as structured data for search engines.