Architecture and authorship20/20
Stefan Buzas; architect-led contemporary transformation
Aveno permanent dossier · published 12 Aug 2026
Church Street
Chiswick, London, Greater London
Film by Fine & Country
Independent reading
A rare Stefan Buzas modernist house, transformed into a 3,900 sq ft Thames-side compound with annexe, gym and roof terrace.
The architecture and finish clear the Pavello benchmark; the £5m ask needs a measured-area reconciliation, works-cost bridge and river-edge title, flood and insurance pack.
Remarkability98/100
Data readiness87/100
Ownership intensityHigh
Why this belongs in Aveno
Remarkable is
an evidence test.
Flagship intelligence98remarkability / 100
Admitted to the private reserve: a genuinely high-value modern house with exact-property publisher film, live market evidence and a decision-ready buyer brief.
Luxury and specification20/20
Scale, finish and lifestyle facilities are materially above ordinary prime stock.
Privacy and setting18/20
Detached form and setting pass; title and boundary evidence remain buyer-side.
Visual quality20/20
Exact-property cinematic publisher film located.
Market distinction20/20
Price, rarity and accommodation support admission.
Data-readiness audit · 87/100
Exact identity19/20
The unique Stefan Buzas authorship, Church Street setting, five-bedroom programme, 363.15 m² listing record and exact-property publisher film align across Fine & Country, OnTheMarket and riverhomes.
Market status20/20
Live listing checked 12 Aug 2026.
Price and area18/20
Current guide and floor area connected; measured survey pending.
Buyer intelligence17/20
Costs, comparables and document gates are structured.
Rights and media20/20
Exact-property publisher-controlled YouTube embed with fallback.
- A rare Stefan Buzas modernist house, transformed into a 3,900 sq ft Thames-side compound with annexe, gym and roof terrace.
- The £5.0m position, 3,908 sq ft scale and lifestyle programme clear the Pavello luxury benchmark.
- The exact-property film gives a cinematic, publisher-controlled view of the architecture and interiors without Aveno reproducing agent media.
- Live primary and syndicated listing evidence
- Exact-property publisher film
- Price-density and five-year cost model
- Planning, title, environmental and energy questions separated from claims
- Official house number, title number and UPRN
- Direct EPC certificate resolving the B/D conflict
- Itemised transformation capex, completion evidence, bills and smart-system support history
Aveno Decision Engine · live model
What does the evidence
change?
Current buyer actionINVESTIGATE — PRICE ONLY AFTER THE WORKS AND RIVER PACK
The architecture and finish clear the Pavello benchmark; the £5m ask needs a measured-area reconciliation, works-cost bridge and river-edge title, flood and insurance pack.
Identity confidence97%
Detached modernist house, Church Street, Chiswick, London W4
The unique Stefan Buzas authorship, Church Street setting, five-bedroom programme, 363.15 m² listing record and exact-property publisher film align across Fine & Country, OnTheMarket and riverhomes.
UPRNStill protected
01
Premium test
Is the asking premium supported?
Guide midpoint£5,000,000£13,770 / m²
versusLocal evidence benchmark£14,693 / m²1 size-known local sale
Subject vs unadjusted evidence-6.3%
ReferenceDateAreaSold£/m²
Prior marketing of the Buzas Church Street houseprobable same propertyInvalid Date—£3,275,000—Current Church Street publisher rangesame marketed propertyAug 2026336.9 m²£4,950,000£14,693Resulting reference£6,135,194Not a valuation. It exposes how much premium the evidence must justify.
The references are not a surveyor-selected valuation set. Recency, condition, land, architecture and improvements are not fully adjusted. Aveno shows the gap instead of hiding it behind false precision.
02
True ownership load
The cost after the keys.
Five-year cost above purchase price£697,750–£912,750SDLT + disclosed transaction extras + acquisition checks + modelled running and replacement allowances. Mortgage interest and major defects excluded.
Council taxPublisher attribution to Band G; exact dwelling match and current Hounslow charge required.£3,000–£3,400attributed
Energy and water363 m² house, annexe and premium systems; replace with 36 months of bills and direct EPC.£5,000–£10,000modelled
Buildings and contents insuranceHigh-value bespoke riverside house; obtain flood-aware declared-value quotations.£4,000–£10,000modelled
Fabric and smart-systems reserveGlazing, roof terraces, fire misting, controls, heating and bespoke envelope.£18,000–£40,000modelled
Landscape, annexe and securityGrounds, separate building, gates, networks and routine specialist servicing.£5,000–£12,000modelled
03
Claim audit
Marketing claim → buyer consequence.
Evidence readiness87/100
Tap the evidence cards as if the seller supplied them. Aveno recalculates the decision—not the beauty.
PROCEED TO VALUATION04
Property memory
The home’s price story.
Direct transaction memory is not yet matched.
This history does not prove fair value. It tells the buyer exactly how much of the current price must be explained by market growth, improvements, specification and scarcity.
Official evidence map
What is matched.
What is withheld.
Land Registry can establish sale history; EPC can reveal rated floor area and energy assumptions; Planning Data can surface constraints by UPRN or coordinate. A link alone is never counted as intelligence.
connected
Live £5m listing, 363
Live £5m listing, 363.15 m², five beds, four baths and principal specification.
Source ↗partialCurrent syndicated £4
Current syndicated £4.95m ask, 3,626 sq ft and tenure/tax/EPC attributes.
Source ↗connectedExact-property publisher-controlled film titled Inside a Modern Five-Bedroom Home in Chiswick, London
Exact-property publisher-controlled film titled Inside a Modern Five-Bedroom Home in Chiswick, London.
Source ↗partialIndependent current market description of the Church Street/Chiswick Mall property and riverside context
Independent current market description of the Church Street/Chiswick Mall property and riverside context.
Source ↗connectedIndependent biographical context for Stefan Buzas; exact-house authorship remains attributed by the listing
Independent biographical context for Stefan Buzas; exact-house authorship remains attributed by the listing.
Source ↗not matchedProperty-level river and surface-water result not yet captured; no flood-risk level claimed
Property-level river and surface-water result not yet captured; no flood-risk level claimed.
Source ↗Published / verified
- Fine & Country currently markets the detached five-bedroom house at £5,000,000 and 363.15 m².
- Current publisher particulars attribute the original modernist design to Hungarian architect Stefan Buzas and describe a meticulous architect-led transformation.
- The programme includes an approved studio/gym annexe, wet underfloor heating, app-controlled lighting/blinds, fire-misting, Cat6, roof terrace and parking for three or more cars.
Investigate next
- Reconcile the 3,626–3,908 sq ft publisher-area conflict with a RICS measurement and approved plans.
- Obtain the complete planning, Building Control, professional appointment, warranty and commissioning pack for the transformation and annexe.
- Order title, drainage, property-level flood and insurance evidence for the Thames-side setting; verify rights of access, parking and terrace use.
Still unknown
- Official house number, title number and UPRN
- Direct EPC certificate resolving the B/D conflict
- Itemised transformation capex, completion evidence, bills and smart-system support history
Primary publisher · visual-rights recordFine & Country ChiswickOpen original source ↗Open rights-basis evidence ↗
All market photography and film remain controlled by their publishers. The publication candidate uses only the permitted YouTube player and original Aveno evidence graphics until separate social-image permission is recorded. The exact-property film remains inside Fine & Country's public YouTube player. Aveno does not copy, download, screenshot, rehost or hotlink listing media. The dossier renders an Aveno title-and-evidence panel plus a direct film/source link if the publisher player is unavailable; no broken-image panel is created. Third-party material remains the property of its publisher. The publisher does not endorse Aveno’s independent assessment.
Durable archive record
Versioned evidence.
Every claim traceable.
Record 1.0-private · admission policy 2026-08-luxury. Facts, attributed claims, estimates and gaps remain separate.