Areas / AL5 / Sibley Avenue / property

18 Sibley Avenue, AL5 1HF

Sold prices, property history and local context for 18 Sibley Avenue, Harpenden, AL5 1HF, from HM Land Registry and EPC records.

Last sold
£452,000
29 Oct 2010
Recorded sales
3
since 1996
Type
Semi-detached house
Freehold
This home in brief

18 Sibley Avenue, in AL5, is a freehold semi-detached house on Sibley Avenue. It last sold for £452,000 in 2010 — its 3rd recorded sale, up 215% on its first recorded sale of £143,500 in 1996. For context, AL5's median over the last 8 years is £750,000 — this home's last sale was 40% lower.

Buying or selling 18 Sibley Avenue?

Get the full £5 report — a precise comparables-based valuation, EPC & running costs, flood/mining risk, planning activity, schools, crime and more, for this exact home.

What might it be worth now?

An indicative range from carrying the 2010 sale forward at this home's own historical growth rate — not a formal valuation.

Indicative range
£1,196,000£1,990,000
as of 2026
Last sold
£452,000
2010
Its own growth
8.3%/yr
compounded across 3 recorded sales

Based on this home's own compounded sale-price growth (8.3% a year between its recorded sales), projected from its last sale. It can't see improvements, condition or anything specific to the property — the £5 report values it against individual comparable sales instead.

Sale history for 18 Sibley Avenue

Every transaction recorded by HM Land Registry for this address, newest first.

DatePriceChangeTypeTenureNew build
29 Oct 2010£452,000+17% (+3.1%/yr)Semi-detached houseFreehold
28 Jul 2005£385,000+168% (+11.5%/yr)Semi-detached houseFreehold
20 Jun 1996£143,500Semi-detached houseFreehold

Other homes at AL5 1HF

Recorded sales for the other addresses sharing this postcode on Sibley Avenue.

AddressLast soldPriceSalesFloor area
16 Sibley Avenue2018£665,0002116 m²
19 Sibley Avenue2010£425,0001
20 Sibley Avenue2020£750,0001
21 Sibley Avenue2007£395,0002
22 Sibley Avenue2018£585,000265 m²
24 Sibley Avenue2021£710,0001140 m²
25 Sibley Avenue2007£395,0004
26 Sibley Avenue2022£945,0003137 m²
27 Sibley Avenue2023£500,0001
28 Sibley Avenue2025£793,6502138 m²
30 Sibley Avenue2001£245,0001
31 Sibley Avenue2014£665,0002155 m²
34 Sibley Avenue2022£755,0001108 m²
35 Sibley Avenue2005£345,0001
36 Sibley Avenue2023£1,205,0004205 m²
38 Sibley Avenue1996£213,2001
39 Sibley Avenue2006£520,0001
40 Sibley Avenue2018£895,0002136 m²
41 Sibley Avenue2014£875,0002189 m²
43 Sibley Avenue2023£845,0004119 m²
44 Sibley Avenue2022£660,0001
45 Sibley Avenue2024£1,350,0002186 m²
47 Sibley Avenue2000£287,0002155 m²
51 Sibley Avenue2010£650,0003
53 Sibley Avenue2006£485,000198 m²
57 Sibley Avenue2025£1,105,0001
59 Sibley Avenue2025£1,100,0001113 m²

The street and the area

Where 18 Sibley Avenue sits in its local market.

AL5 median
£750,000
last 8 years
Sibley Avenue sold prices & street profile →AL5 house prices & area guide →

18 Sibley Avenue: quick answers

From HM Land Registry, EPC and VOA records.

When did 18 Sibley Avenue last sell, and for how much?

18 Sibley Avenue last sold for £452,000 on 29 Oct 2010, according to HM Land Registry.

How many times has 18 Sibley Avenue been sold?

HM Land Registry records 3 sales for 18 Sibley Avenue between 1996 and 2010. Sales before 1995 are not in the public dataset.

What is 18 Sibley Avenue worth today?

Carrying its 2010 sale price forward with its own compounded sale-price growth of 8.3% a year across 3 sales suggests roughly £1,196,000–£1,990,000 as of 2026. This is indicative only — the full report values it against individual comparable sales.

Buying or selling 18 Sibley Avenue?

Get the full £5 report — a precise comparables-based valuation, EPC & running costs, flood/mining risk, planning activity, schools, crime and more, for this exact home.

Contains HM Land Registry data © Crown copyright and database right 2026. EPC data © Crown copyright. Council tax band from the Valuation Office Agency. Licensed under the Open Government Licence v3.0. Sales before 1995 are not in the public dataset. Figures describe recorded transactions and are not a valuation of this home; the indicative range is a district-level projection, not a survey or appraisal.