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Get started18 Boundary House is a mid-terrace house in Welwyn Garden City (AL7 4EH). It has a recorded floor area of 32 m² (around 344 sq ft), construction records dating it to 1900-1929 and council tax band A. At 32 m² this is the 7th smallest of 45 units on EPC record in the building, where floor areas span 30–32 m². The building's EPC ratings span D to C, with this unit at the top. The latest certificate (August 2025) shows a C (score 78), near the top of the C band. The rating has held steady at C across 4 certificates since February 2012. Between certificates, wall efficiency went from Very Poor to Poor and lighting went from Poor to Good; while main heating dropped from Average to Poor. The recommended improvements would push it to B (score 86). Main heating runs on electricity.
18 Boundary House's carbon output is low for the local stock.
18 Boundary House has no Land Registry sales on file, suggesting it has stayed in the same hands since registration began.
£154,000
Modelled from EPC, postcode comparables.
That can mean the property has never traded since the registry began publishing in 1995, was a new build that hasn't been registered yet, or is held in the same hands long-term.
CO₂ Emissions for 18 Boundary House runs comfortably ahead of the street norm.
EPC Rating
78 (C)
Street avg 73 (C)
Floor Area
32 m²
Street avg 32 m²
CO₂ Emissions
0.4 t/year
Crime
5/mo
Steady year-on-year across the wider district.
Nearest stop
0.1 km
Boundary Lane — bus stop.
Changes detected from historical EPC data
Hot water system upgraded
Windows upgraded, improving insulation
More low energy lighting installed
Hot water efficiency decreased
Low energy lighting percentage decreased
Heating system changed
Heating controls upgraded for better temperature management
Hot water efficiency improved
High performance glazing installed
Wall insulation improved
More low energy lighting installed
Are we missing something? Tell us about home improvements to help adjust your valuation.
Street avg 0.8 t/year
Habitable Rooms
1 rooms
Street avg 1 rooms
Closest school
0.4 km
Creswick Academy. 18 schools nearby.