Thalassa, Gill Bank Road, Ilkley, LS29 0AU
About Thalassa
Thalassa is a seven-bedroom detached house in Ilkley (LS29 0AU). It has a recorded floor area of 523 m² (around 5630 sq ft), construction records dating it to 1900-1929 and council tax band G. The latest certificate (March 2022) shows a C (score 76), near the top of the C band. When first surveyed in October 2011 the rating was E, the property has climbed 2 bands since. Between certificates, wall efficiency went from Poor to Average, window efficiency went from Poor to Good and lighting went from Good to Very Good; while hot-water efficiency dropped from Very Good to Good. Other recorded features include notable views and a self-contained annexe.
At 523 m² the property is well over the postcode median (189 m² across 21 EPCs), placing it in the larger end of the local stock. 7 bedrooms is on the larger side for this postcode, where 4 is the typical count. Today's modelled estimate of £2,244,000 sits 170.4% above the 2013 sale of £830,000. On a £-per-square-foot basis, the last sale (£147/sq ft) was about 50.4% below the postcode norm. 15 planning records sit against the property, 9 approved, 5 refused. Past consents include tree works and an extension, meaningful when judging how the property has evolved. 13 years since the last transfer (April 2013).
Know exactly what you're buying at Thalassa
Before you offer, see what the listing won't tell you, the true value, the red flags and the full history.
Already flagged here
Valuation
against the asking price
Risks
planning & flood
Sold prices
similar homes nearby
Trends
the local market
What this property has
Inside
- Bedrooms7
- Bathrooms5
- Dining roomYes
- EnsuiteYes
Outside
- Private gardenSouth-facing
- Notable viewsYes
Building
- RefurbishedYes
Energy performance
Thalassa's carbon output runs well above what efficient homes in the postcode produce.
EPC Rating
Property Improvements
Changes detected from historical EPC data
Heating controls upgraded for better temperature management
Hot water system changed
Windows upgraded, improving insulation
Cavity wall insulation installed
More low energy lighting installed
Planning history
Council records show a subdivision application — the property's legal arrangement has been altered.
- Dec 2024Tree WorksTreesIn report
T1- Yew. Remove to ground level. The tree has weak unions at the base and the applicant would like to redesign this area of the garden. T2- Birch. Remove to ground level. The tree has weak unions at the base and the applicant would like to redesign this area of the garden. T3- Conifer. Remove to ground level. The tree is growing into the canopy of the mature TPO'd Oak tree. The applicant wishes to remove the conifer to prevent any further interference or damage to the Oak tree.
- Agent
- Lightwork Tree Services
- Documents
- 7 docs on file
- Reference
- 24/04378/CPN
- Mar 2022Tree WorksTreesIn report
T1- Conifer - fell, T2- Small willow - fell, T3- Conifer - fell
- Agent
- Lightwork Tree Services
- Documents
- 2 docs on file
- Reference
- 22/00979/CPN
We flagged 1 thing worth checking at Thalassa
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
30-day money-back guarantee
Sales history & valuation
Thalassa valuation sits well clear of the typical sold price in this postcode.
£2,244,000
Modelled from EPC, postcode comparables.
£830,000
Recorded with HM Land Registry.
Sales timeline
25 April 2013Most recent
£830,000
Median price across the last 5 sales in LS29 0AU: £836,500 (2024–2021).
Nearby sales in LS29 0AU
South Close, Gill Bank Road, Ilkley, LS29 0AU
Sold Nov 2024
£1,100,000Oak Ghyll, Flat 2, Gill Bank Road, Ilkley, LS29 0AU
Sold Jul 2024
£442,000Summerwood House, Gill Bank Road, Ilkley, LS29 0AU
Sold Jun 2022
£1,395,00036 Gill Bank Road, Ilkley, LS29 0AU
Sold Mar 2022
£835,00045 Gill Bank Road, Ilkley, LS29 0AU
Sold Mar 2021
£836,500
Everything we know about Thalassa, 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

Versus other Gill Bank Road homes
Price per m² for Thalassa lags the street by a wide margin.
Price per m²
£1,587
Street avg £3,978
Floor Area
523 m²
Street avg 222 m²
Habitable Rooms
11 rooms
Street avg 8 rooms
CO₂ Emissions
12.0 t/year
Street avg 9.4 t/year
Similar properties nearby
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LS29 0DX
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1 Bark Lane, Addingham
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1 Chapel Cottages, Langbar
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1 Abbey Close, Addingham
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1 Carters Lane, Middleton
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1 Darkwood Croft, Addingham
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The neighbourhood at a glance
Daytime road noise here sits well below conversation level — a quiet pocket of the postcode.
Crime
3/mo
Steady year-on-year across the wider district.
Nearest stop
0.3 km
Rupert Road Gilstead Wy — bus stop.
Closest school
0.8 km
All Saints' CofE Primary School. 5 schools nearby.
Go deeper on the local area
The full report breaks down crime, transport links, schools and air quality in depth.
Road noise across the postcode

Daytime· 07:00 – 23:00
46.8dB

Night-time· 23:00 – 07:00
36.9dB