What type of property is Tewin Water House, Apartment 4, Tewin Water, AL6 0AA?

Tewin Water House, Apartment 4, Tewin Water, AL6 0AA is a 3-bedroom semi-detached house.

What was the last sold price for Tewin Water House, Apartment 4, Tewin Water, AL6 0AA?

Tewin Water House, Apartment 4, Tewin Water, AL6 0AA last sold for £870,000 in March 2025, around 1 years ago. Land Registry has 3 sales on record going back to £494,750 in December 2002. Source: HM Land Registry.

How has the value of Tewin Water House, Apartment 4, Tewin Water, AL6 0AA changed over time?

Across 3 sales between December 2002 and March 2025, Tewin Water House, Apartment 4, Tewin Water, AL6 0AA rose from £494,750 to £870,000, a change of £375,250. That works out to roughly +2.6% per year compounded over 22 years. Source: HM Land Registry.

How energy efficient is Tewin Water House, Apartment 4, Tewin Water, AL6 0AA?

The current EPC rating for Tewin Water House, Apartment 4, Tewin Water, AL6 0AA is D with a score of 57 out of 100, lodged in August 2014. The assessor estimates the property could reach a B. Source: EPC Register.

What is the floor area of Tewin Water House, Apartment 4, Tewin Water, AL6 0AA?

Tewin Water House, Apartment 4, Tewin Water, AL6 0AA has a recorded floor area of 154 m² (1,658 sq ft), around 51 m² per bedroom. That makes it about 57% smaller than the median EPC-recorded property in AL6 0AA. Source: EPC Register.

How is Tewin Water House, Apartment 4, Tewin Water, AL6 0AA heated?

The latest EPC at Tewin Water House, Apartment 4, Tewin Water, AL6 0AA records mains gas as the main heating fuel. Source: EPC Register.

What planning history does Tewin Water House, Apartment 4, Tewin Water, AL6 0AA have?

Tewin Water House, Apartment 4, Tewin Water, AL6 0AA has 1 planning record on file (1 approved), most recent in March 2018. Source: PlanIt planning register.

What council tax band is Tewin Water House, Apartment 4, Tewin Water, AL6 0AA?

Tewin Water House, Apartment 4, Tewin Water, AL6 0AA is in council tax band G. That sits towards the upper end of the band ladder, typically reflecting larger or higher-value homes.

Where is Tewin Water House, Apartment 4, Tewin Water, AL6 0AA located?

Tewin Water House, Apartment 4, Tewin Water, AL6 0AA sits in Welwyn. It falls within the AL6 postcode district in Hertfordshire.

Is Tewin Water House, Apartment 4, Tewin Water, AL6 0AA in a safe area?

Police records around Tewin Water House, Apartment 4, Tewin Water, AL6 0AA show an average of 2 reported crimes per month over the last 8 months. Violent crime makes up roughly 67% of reports, the most common category. The overall trend is broadly stable. Source: Police UK.

Which schools serve Tewin Water House, Apartment 4, Tewin Water, AL6 0AA?

The closest primary school to Tewin Water House, Apartment 4, Tewin Water, AL6 0AA is Waterside Academy (417m), one of 14 primaries within walking distance. The closest secondary is Ridgeway Academy (1.5km), with 2 secondaries in the surrounding area.

What transport links are near Tewin Water House, Apartment 4, Tewin Water, AL6 0AA?

The closest bus stop to Tewin Water House, Apartment 4, Tewin Water, AL6 0AA is Robin Mead, 455m away. The nearest rail option is Welwyn North Rail Station, 1.3km away.

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Tewin Water House, Apartment 4, Tewin Water, Welwyn, AL6 0AA

3 sales on record1 planning record

Property type

Semi-detached

Floor 1st

Bedrooms

Bathrooms

Floor area

154 m²

1658 sq ft

Energy rating

Score 57

Council tax

Band G

Tenure

Owner Occupied

Overview

About Tewin Water House

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

Tewin Water House is a three-bedroom semi-detached house in Welwyn (AL6 0AA). It has a recorded floor area of 154 m² (around 1658 sq ft), construction records dating it to before 1900 and council tax band G. At 154 m² this is the smallest unit on EPC record across Tewin Water House (154–588 m²). The building's EPC ratings span E to C across 5 units on file. The latest certificate (August 2014) shows a D (score 57), a step below the typical UK home. The recommended improvements would lift it to B (score 81), a 2-band jump. The latest certificate is from August 2014, so improvements made since then won't be reflected.

Most recent transfer was March 2025 at £870,000 — fresh data. At 154 m² it sits well below the postcode median (279 m² across 4 EPCs), making it one of the more compact homes locally. Across 2002–2025, sale prices on this property compounded at 2.6% per year. On a £-per-square-foot basis, the last sale (£525/sq ft) was about 127.4% above the typical sold price in the postcode. One historical planning record sits against the property in 2018.

Before you offer

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Already flagged here

Larger development activity nearby

£14.99

Trusted by UK homebuyers

Valuation

against the asking price

Risks

planning & flood

Sold prices

similar homes nearby

Trends

the local market

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

Bedrooms3
Bathrooms2

Energy

Energy performance

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

Tewin Water House's carbon output runs well above what efficient homes in the postcode produce.

EPC Expired

This certificate is over 10 years old and is no longer valid.Expired 03 Aug 2024

EPC Rating

D57

Main Heating

Gas

Main Fuel

Gas

Hot Water

Good

Windows

Very Poor

CO2 Emissions

7.1 t/year

Occupancy

Owner Occupied

Planning

Planning history

Applications and permits filed against Tewin Water House, Apartment 4, Tewin Water, Welwyn, AL6 0AA, sourced from the PlanIt planning register.

Mar 2018
RenovationHeritage
In report
Application to regularise the installation of a replacement timber staircase
Documents
8 docs on file
Reference
3/17/2832/LBC
View planning record

Before you offer

We flagged 1 thing worth checking at Tewin Water House

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.

Tewin Water House valuation sits well clear of the typical sold price in this postcode.

Current estimate

£812,000

Modelled from EPC, postcode comparables and a sale-price growth of 2.6% per year over 22 years.

See how we calculated this

Last sold (2025)

£870,000

Growth on file: 2.6% per year over 22 years.

Sales timeline

4 March 2025Most recent
£870,000
+14.8%over 9 years
18 January 2016
£757,575
+53.1%over 13 years
6 December 2002
£494,750

Median price across the last 5 sales in AL6 0AA: £620,000 (2021–2002).

Nearby sales in AL6 0AA

Before you offer

Everything we know about Tewin Water House, 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

On the street

Versus other Tewin Water homes

Four headline reads against 3 similar flats on this street, drawn from the latest EPC and Land Registry data.

Tewin Water House outperforms the street on price per m² by a wide margin.

Price per m²

£5,649

Street avg £2,975

Strongly above

Floor Area

154 m²

Street avg 246 m²

Strongly below

Habitable Rooms

7 rooms

Street avg 6 rooms

Above

CO₂ Emissions

7.1 t/year

Street avg 9.5 t/year

Below

Comparables

Similar properties nearby

Nearest stop

0.5 km

Robin Mead — bus stop.

Closest school

0.4 km

Waterside Academy. 16 schools nearby.

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 Tewin Water House, Apartment 4, Tewin Water, Welwyn, AL6 0AA. Each answer is also embedded as structured data for search engines.