Estimated value today£441klast sold £285,000, 2013 · likely £402k–£480k
Energy ratingC2023 certificate, could be B
Energy bills, a year£1,083about £90 a month at 2026 prices
Price per m²£3,737/m²neighbourhood typical £5,017/m²
See 10, Blackwell Avenue from the street and the air
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What would improve this home
Its 2023 energy certificate recommends 2 measures, which together could take it from C to B. All of them together typically cost £9k–£14k.
Solar water heatingtypically £4k–£6k
Solar panels (electricity)typically £5k–£8k
In the order the certificate lists them (usually cheapest and most effective first). Costs are the median of the ranges quoted on certificates across England and Wales, not quotes for this home. Grants may help: check the government's home energy grants service.
What's it worth with your changes?
Sale records can't see extensions, conversions or condition. Tell us what's changed since 2013 and we'll adjust the estimate, with a range that shows how sure we can be.
Low£410k
Likely£441k
High£472k
Starting value (our estimate)£441k
Range includes ±7% for the estimate itself. Effects are typical ranges, not this home's: a surveyor or local agent who sees it will do better. Work done before 2013 is already in the price. Evidence: of 573,662 homes we saw extended on their energy certificates (median +30 m²), the 123,110 that sold before and after grew a median 10.9% more than their neighbourhood: about a third of the extra space at the home's average price per m².
The home
Type
Semi-detached (mid-terrace)
Tenure
Freehold
Floor area
118 m² (1,270 sq ft), 7 habitable rooms
Built
1967-1975
Main heating fuel
gas
Sales since 1995
£285k (2013) → £495k (2021)
The estimate moves the last sale in line with the neighbourhood's like-for-like price index. It can't see extensions, condition or the market for this particular home: it is not a valuation.
A £1,698B £1,981C £2,264D £2,547E £3,113F £3,679G £4,246H £5,095
From the 2023 energy certificate, rescaled to 2026 gas and electricity prices (approximate national averages). Appliances, cooking and standing charges are not included; actual bills depend on how you live.
Getting about
Nearest station
Guildford, 2.0 km (busiest route: London Waterloo)
Central London
44 km as the crow flies
Large employment centre
10 min by public transport · 7 by car
Town centre
23 min by public transport or walking
Commuting by train/Tube
3% of local workers · 23% mostly work from home
Airport
London Heathrow, 27 km
Everyday life
Weekly shop
food store about 7 min without a car
GP surgery
about 11 min
A&E
Royal Surrey County Hospital, 0.3 km (CQC: Good)
Top-rated primaries
none within 2 km
Top-rated secondaries
Guildford County School (1.8 km), St Peter's Catholic School (4.8 km)
Eating out
7 restaurants and cafés, 0 pubs and bars in the neighbourhood
School distances are straight lines; admissions depend on each school's catchment and criteria.
£2,527 a month for a 4+-bedroom home in Guildford (2026-08)
Gross yield
6.9% on the estimated value
Letting rules
rated C: meets the current E minimum
Council-wide average rents (ONS Price Index of Private Rents); bedrooms estimated from the certificate's habitable rooms. Before costs, voids, tax and mortgage interest.
Planning and development
Conservation area
not in one (postcode check)
Article 4 direction
none recorded
Brownfield sites in the neighbourhood
2 sites, about 71 homes planned
This home extended?
yes: 87 m² → 118 m² by 2023 (energy certificates)
Extensions on the street
1 other home on Blackwell Avenue (within 250 m) extended, most recently 2021
Company landlords
13.8% of homes in the neighbourhood are owned by companies (HM Land Registry, Oct 2026)
New homes completed 2021–2025
7 in the neighbourhood
Questions to raise
Generated from the facts above, as prompts for your solicitor, surveyor or the agent. Not legal advice.
Extended: 87 m² → 118 m²Its energy certificates show the floor area grew by 31 m² (certificate 2023). Ask for the planning permission or a lawful development certificate, building-regulations completion certificates, and any party wall agreements.
Development planned nearbyThe council's brownfield register lists 1 site of 50+ homes in this neighbourhood (largest: Land between Gill Avenue and Rosalind Frankin Close, Guildford, 61 homes). Look up planning applications for anything near you.
For every purchaseCommission a survey suited to the home's age and condition, check the title plan matches what you see on the ground (boundaries, access, parking), and ask about disputes with neighbours, rights of way and shared drives.