Let Flat

FLAT 115

15 PORTMAN SQUARE, LONDON, GREATER LONDON W1H 6LL

3 beds 2 baths 1,119 sq ft Listed 17 Aug 2021 (-1742d)

£6,000 pcm

Reduced on 3 Sep 2021

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# 3 bedroom flat for rent (W1H 6LL)

## Property Details

| Key | Value |
|-----|-------|
| Address | FLAT 115, 15 PORTMAN SQUARE, LONDON, GREATER LONDON W1H 6LL |
| Price | £6,000 pcm |
| Bedrooms | 3 |
| Bathrooms | 2 |
| Construction age | England and Wales: 1900-1929 |
| Floor area | 104 m² |
| Last sold | £1,000,000 Mar 2017 |

## EPC Rating & Upgrade Cost

- **Current rating:** E
- **Potential rating:** C
- **Current heating cost:** £1,323/year
- **Est. upgrade cost to C:** £15,075

### Recommendations
- A2 (£850 - £1,500)
- Q (£4,000 - £14,000)
- O (£3,300 - £6,500)

[View full EPC on gov.uk](https://find-energy-certificate.service.gov.uk/energy-certificate/2639-1108-9198-6161-9949)

## Description

An opulent ninth floor apartment boasting a large south & west facing private Roof Terrace, ideal for outdoor dining, with far reaching views & beautiful sunsets.  Air Conditioning compliments this very light & sunny 1,202 sq.ft. / 112 sq.m. three bedroom, two bathroom property which benefits from a built in bespoke bar, principal dressing room, further plentiful thoughtful storage throughout including a laundry closet with separate washer & dryer. Custom, luxury details prevail, from the Italian kitchen with Gaggenau & Miele appliances, “mansion weave’ oak flooring, fornasetti wallpapers, remote control blackout binds (principal bedroom) to the underfloor bathroom & kitchen heating. Set in a renowned 24 hour portered building on the prominent Portman Square, offering private communal gardens with tennis court.

Central Heating & Hot Water is included in the rental price.

Fees & Charges: Tenancies exceeding £100,000 Per annum £480 inc VAT, Tenancies where a company is a tenant £480 Inc VAT.

## Property Photos

- ![Terrace](/listings/photos/112088324/513664) - Terrace
- ![115, 15 Portman Sq (2)-700.jpg](/listings/photos/112088324/513668) - 115, 15 Portman Sq (2)-700.jpg
- ![115, 15 Portman Sq (1)-700.jpg](/listings/photos/112088324/513669) - 115, 15 Portman Sq (1)-700.jpg
- ![115, 15 Portman Sq (16)-700.jpg](/listings/photos/112088324/513670) - 115, 15 Portman Sq (16)-700.jpg
- ![115, 15 Portman Sq (9)-700.jpg](/listings/photos/112088324/513671) - 115, 15 Portman Sq (9)-700.jpg
- ![115, 15 Portman Sq (4)-700.jpg](/listings/photos/112088324/513672) - 115, 15 Portman Sq (4)-700.jpg
- ![115, 15 Portman Sq (12)-700.jpg](/listings/photos/112088324/513673) - 115, 15 Portman Sq (12)-700.jpg
- ![115, 15 Portman Sq (11)-700.jpg](/listings/photos/112088324/513674) - 115, 15 Portman Sq (11)-700.jpg
- ![115, 15 Portman Sq (6)-700.jpg](/listings/photos/112088324/513675) - 115, 15 Portman Sq (6)-700.jpg
- ![115, 15 Portman Sq (7)-700.jpg](/listings/photos/112088324/513676) - 115, 15 Portman Sq (7)-700.jpg
- ![115, 15 Portman Sq (13)-700.jpg](/listings/photos/112088324/513678) - 115, 15 Portman Sq (13)-700.jpg
- ![115, 15 Portman Sq (8)-700.jpg](/listings/photos/112088324/513681) - 115, 15 Portman Sq (8)-700.jpg
- ![115, 15 Portman Sq (3)-700.jpg](/listings/photos/112088324/513684) - 115, 15 Portman Sq (3)-700.jpg
- ![115, 15 Portman Sq (5)-700.jpg](/listings/photos/112088324/513687) - 115, 15 Portman Sq (5)-700.jpg
- ![115, 15 Portman Sq (10)-700.jpg](/listings/photos/112088324/513688) - 115, 15 Portman Sq (10)-700.jpg
- ![115, 15 Portman Sq (15)-700.jpg](/listings/photos/112088324/513691) - 115, 15 Portman Sq (15)-700.jpg

## Floorplans

- ![115, 15 Portman Square - hi.jpg](/listings/photos/112088324/513694) - 115, 15 Portman Square - hi.jpg

## EPC Graphs

- ![EE Rating](/listings/photos/112088324/513697) - EE Rating

## Rental Range

*ONS Price Index of Private Rents (Westminster). Low / Realistic / Optimistic = conservative / average / best case.*

- **Low:** £2,834/mo
- **Realistic:** £3,149/mo
- **Optimistic:** £3,464/mo

## LHA (Local Housing Allowance)

*VOA 30th percentile rent floor for Central London (Apr 2025 – Mar 2026).*

- **LHA floor (this property size):** £2,154/mo

## Rental Comparables

*Residential lets from OpenRent and Rightmove for the area (same bedroom count). Use to validate rent estimates. Student lets are excluded.*

| Title | Rent | Beds | Distance | As seen on |
|------|------|------|------|------|
| 3 Bed Penthouse, Harrowby Court, W1H | £6,480/mo | 3 | 0.38 miles | OpenRent |

**Average rent: £6,480/mo (1 listing)**

## Rent-driven metrics

*Based on OpenRent comparables (median £6,480/mo).*

- **Gross yield:** 1296%
- **Monthly cashflow:** £5,783/mo (75% LTV, 3.95% APR (5yr fixed), 25yr term)
- **Cash-on-cash ROI:** 3988.5%

*Gross yield = annual rent as % of price (no costs). Cashflow = rent − mortgage − 10% maintenance − £25/mo compliance; assumes 75% LTV, 3.95% APR (5yr fixed), 25yr term. ROI = annual profit ÷ cash in (deposit + 4% purchase costs).*

## Price per Square Metre

- **£/m²:** £58/m²

## Flood risk

- **Zone:** 1
- **Risk:** Low
- **Source:** Job (default Low)

[Check long-term flood risk (GOV.UK)](https://check-long-term-flood-risk.service.gov.uk/postcode)

Terrace 115, 15 Portman Sq (2)-700.jpg 115, 15 Portman Sq (1)-700.jpg 115, 15 Portman Sq (16)-700.jpg 115, 15 Portman Sq (9)-700.jpg 115, 15 Portman Sq (4)-700.jpg 115, 15 Portman Sq (12)-700.jpg 115, 15 Portman Sq (11)-700.jpg 115, 15 Portman Sq (6)-700.jpg 115, 15 Portman Sq (7)-700.jpg 115, 15 Portman Sq (13)-700.jpg 115, 15 Portman Sq (8)-700.jpg 115, 15 Portman Sq (3)-700.jpg 115, 15 Portman Sq (5)-700.jpg 115, 15 Portman Sq (10)-700.jpg 115, 15 Portman Sq (15)-700.jpg

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Property details

Floor area

104 m²

EPC rating

Year built

England and Wales: 1900-1929

Deprivation

Decile 8 (26,473 of 33,755)

Street crime

3360 incidents within 1 mile (Mar 2026)

Key features

Private Roof Terrace, South/West Facing
Air Conditioning
24 Hour Porterage
Walk-in Wardrobe
Oak Wood Flooring
Ninth Floor
Far reaching views
Excellent Natural Light
Underfloor Heating
Communal Garden with Tennis Court

Description

An opulent ninth floor apartment boasting a large south & west facing private Roof Terrace, ideal for outdoor dining, with far reaching views & beautiful sunsets. Air Conditioning compliments this very light & sunny 1,202 sq.ft. / 112 sq.m. three bedroom, two bathroom property which benefits from a built in bespoke bar, principal dressing room, further plentiful thoughtful storage throughout including a laundry closet with separate washer & dryer. Custom, luxury details prevail, from the Italian kitchen with Gaggenau & Miele appliances, “mansion weave’ oak flooring, fornasetti wallpapers, remote control blackout binds (principal bedroom) to the underfloor bathroom & kitchen heating. Set in a renowned 24 hour portered building on the prominent Portman Square, offering private communal gardens with tennis court.
Central Heating & Hot Water is included in the rental price.

Fees & Charges: Tenancies exceeding £100,000 Per annum £480 inc VAT, Tenancies where a company is a tenant £480 Inc VAT.

Listed by

London

Napier Watt Limited

Reference: 112088324

EPC Rating & Upgrade Cost

Current rating: E

Potential rating: C

Inspection date: 04/03/2021

Current heating cost: £1,323/year

Potential heating cost: £403/year

Est. upgrade cost to C: £15,075

EPC E or below may face future regulation risk. Upgrading to C could improve long-term ROI.

Recommendations

Flat roof or sloping ceiling insulation (£850 - £1,500)
50 mm internal or external wall insulation (£4,000 - £14,000)
Replace single glazed windows with low-E double glazing (£3,300 - £6,500)

View full EPC on gov.uk

Flood risk

Zone: 1

Risk: Low

Job (default Low)

Floorplans

115, 15 Portman Square - hi.jpg

EPC Graphs

EE Rating

Company ownership

Registered legal owner is a company.

Company-owned (UK company) Company-owned (Overseas company)

Company: WILLOWGREEN PORTMAN SQUARE LIMITED (2247192)

Rental Range

Estimated market rent for Westminster. Low = conservative, Realistic = average, Optimistic = best case.

Low £2,834/mo

Realistic £3,149/mo

Optimistic £3,464/mo

Based on Local Authority from postcode lookup → Westminster.

LHA (30th percentile) floor for Central London: £2,154/mo (Apr 2025 – Mar 2026)

Location

Map view View on Google Maps View on OpenStreetMap Street View W1H 6LL

Nearby

Nearest stations, universities and amenities (distance from property).

Type	Name	Distance
Shop	And So To Bed	0.0 miles
Shop	Motor Village	0.0 miles
Bus stop	Orchard Street / Selfridges	0.1 miles
Train station	Marble Arch	0.2 miles
Train station	Bond Street	0.3 miles
Hospital	The Portland Hospital	0.7 miles
University	LBS Behaviour Lab	0.7 miles
Hospital	National Hospital for Neurology and Neurosurgery at Cleveland Street	0.8 miles
University	Institute of Sports Humanities	1.1 miles

Street-level crime

Category	Count
Theft from the person	816
Other theft	612
Shoplifting	482
Violence and sexual offences	424
Anti-social behaviour	376
Public order	110
Burglary	109
Drugs	104
Robbery	103
Vehicle crime	86
Criminal damage and arson	78
Bicycle theft	29
Other crime	22
Possession of weapons	9
Total incidents	3360

Within 1 mile during Mar 2026. Source: data.police.uk (England & Wales).

Schools nearby

Nearest open schools with Ofsted ratings (England). Closed schools are not shown. Data from Get Information about Schools and Ofsted.

Name	Type	Distance	Ofsted
St Vincent's Catholic Primary School	Primary	0.2 miles	Outstanding — 4 Feb 2024
Wetherby Senior School	Other	0.2 miles	— (No rating)
Wetherby Preparatory School	Other	0.3 miles	— (No rating)
Halcyon London International School	Other	0.3 miles	Outstanding — 27 May 2020
Sylvia Young Theatre School	Other	0.4 miles	— (No rating)

Rental Comparables

Residential lets from OpenRent and Rightmove for the area (same bedroom count). Use to validate rent estimates. Student lets are excluded.

Title	Rent	Beds	Distance	As seen on
3 Bed Penthouse, Harrowby Court, W1H	£6,480/mo	3	0.38 miles	OpenRent

Average rent: £6,480/mo (1 listing)

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