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4 bed flat for sale London, W1U

Asking price

£2,000,000

Added on 16/09/2026

Type: Flat
Bedrooms: 4
Bathrooms: 3
Size: £1,075 per sq ft
Tenure: Share of freehold

Council tax Band G £1,749 a year

Key features

Bright double reception with high ceilings and balcony
Contemporary fitted eat-in kitchen
Four double bedrooms
Three modern bathrooms
High ceilings and period detail
Well kept red brick mansion block with concierge
Prime Marylebone location

About this property

Spacious four bedroom three bathroom flat in Portman Mansions, offering bright reception rooms, high ceilings, period detail and a modern kitchen, all set within a well kept mansion block in the heart of Marylebone. Located moments from Marylebone High Street, the area offers boutique shops, dining and excellent transport links, with Regent Park and Baker Street stations nearby. A highly desirable central London location with a classic village feel.

Floorplan

Council tax

Band G £1,749 a year

Per year

Band A

£700
Band B

£816
Band C

£933
Band D

£1,050
Band E

£1,283
Band F

£1,516
Band G

This home: £1,749
Band H

£2,099

This home is in band G, which costs £1,749 a year in Westminster for 2026/27.

Figures from MHCLG (Open Government Licence v3): the average bill for each band across Westminster, including the typical parish precept, so a parish's own bill can differ a little. Discounts lower the bill, such as 25% off for an adult living alone. Check a home's band on GOV.UK.

Price guide

100 comparables · within 1.2 miles

Cheaper than 59% of the 4-bed flats for sale nearby right now.

This home, £2,000,000 Median £2,640,000 · £1,290,500 – £8,547,500

Per square foot

£1,075 13% under

4-bed flats nearby £1,234

Against sold prices

32% under

W1U sold median £1,579 / sq ft, 134 sales

Compared with 100 4-bed flats for sale within 1.2 miles, on the market now or already under offer. The range is the middle 80% of their asking prices. Sold prices are HM Land Registry sales in W1U over the last 24 months, per square foot of EPC floor area. All sold £/sq ft in W1U →

Location

London, W1U

Open map Street View

Mortgage and stamp duty

Property price £2,000,000

£1m £3m

Deposit10% £200,000

£0 £2m

Interest rate 4.5%

0.5% 15%

Repayment period 25 years

5 years 40 years

A £1,800,000 mortgage. Most lenders would want a household income of about £400,000 to support it.

A guide only, for a capital repayment mortgage. The rate you are offered and what you can borrow depend on your circumstances and a full application with a lender or broker. Your home may be repossessed if you do not keep up repayments on your mortgage.

Properties sold nearby

HM Land Registry sales nearby. Floor areas from Energy Performance Certificates where matched.

Address	Type	Sold	Size	Size	£/sq ft	Price
Flat 1b, Portman Mansions, Chiltern Street Flat / maisonette	Flat / maisonette	Sept 2023	1,259 sq ft £913/sq ft	1,259 sq ft	£913	£1,150,000
Flat 1b, Portman Mansions, Chiltern Street Flat / maisonette	Flat / maisonette	Jun 2013	1,259 sq ft £782/sq ft	1,259 sq ft	£782	£985,000
Flat 1f, Portman Mansions, Chiltern Street Flat / maisonette	Flat / maisonette	Oct 2011	n/a	n/a	n/a	£1,575,000
Flat 1f, Portman Mansions, Chiltern Street Flat / maisonette	Flat / maisonette	Apr 2011	n/a	n/a	n/a	£1,075,000
Penthouse 1, Portman Mansions, Chiltern Street Flat / maisonette	Flat / maisonette	Oct 2009	1,367 sq ft £530/sq ft	1,367 sq ft	£530	£725,000
Flat 1d, Portman Mansions, Chiltern Street Flat / maisonette	Flat / maisonette	Aug 2009	n/a	n/a	n/a	£850,000
Flat 1k, Portman Mansions, Chiltern Street Flat / maisonette	Flat / maisonette	May 2006	n/a	n/a	n/a	£940,000
Flat 1b, Portman Mansions, Chiltern Street Flat / maisonette	Flat / maisonette	Mar 2006	1,259 sq ft £457/sq ft	1,259 sq ft	£457	£575,000