Overview
Simon Deen Real Estate Limited is an estate agent based at Kalculus, 119 Marylebone Road, London, NW1 5PU. It is an independent, single-office business on our register. Companies House number 12784282. It has been trading since 2020-07-31. It belongs to The Property Ombudsman redress scheme. On the Find a Local Agent score it ranks 41st of 179 estate agent offices in Westminster (2026-10-19).
Homes in the NW1 postcode district sold for a median £685,000 across 249 sales in the last 12 months. Across Westminster the average price is £876,788 (July 2026), -19.6% over ten years and 6.2× its January 1995 level. Since 1995 the median sold price in NW1 has moved from £105,000 to £635,000 across 19,972 recorded sales. 111 estate and letting agent offices on the register are based in NW1.
Market position and ranking
41/179 in Westminster on the Agent Score (76/100, provisional: 25% data) · 6 of 17 in NW1 · 41 of 179 in Westminster · 388 of 1,694 in London
No league history on record yet
This branch does not appear in the register’s historical town league tables. Its position will build up from our own daily reading of agents’ websites.
Stock on the market
Stock breakdown coming
Homes for sale by price, bedrooms, property type, time on the market and postcode appear here once our crawler has read simondeen.com. Agents can speed this up by claiming the profile.
Sales performance
Asking price achieved and time to sell
We match each home an agent lists to its HM Land Registry completion to measure the price achieved against asking and the time from listing to completion. Results appear here once enough of this branch’s listings have completed, usually three to six months after we first read its website.
Reviews
Reviews left on Find a Local Agent
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Online presence
Profiles are found by reading the links on the agent’s own website. Follower counts and posting activity will be added as they are collected.
The local market
Average prices across Westminster since January 1995, and what has sold in NW1 in the last year. Westminster averages £876,788 in July 2026, -17.8% over five years and -19.6% over ten.
Average house price, Westminster
UK House Price Index, monthly
Homes sold each year, Westminster
Completed sales recorded in the House Price Index
Sold prices in NW1 since 1995
Median price each year by property type, HM Land Registry
Homes sold each year in NW1
19,972 completed sales since 1995
Sales per month in NW1
HM Land Registry completions, last 12 months
What sold in NW1
Completions by property type, last 12 months
| Median sold price, NW1 | £685,000 | Sales, last 12 months | 249 |
|---|---|---|---|
| Detached | — | Semi-detached | £2,437,500 |
| Terraced | £1,300,000 | Flat | £622,500 |
Other agents in NW1
| Office | Type and group | Homes for sale |
|---|---|---|
| McHugh & Co | Estate and letting agentIndependent | 321today |
| Jeremy Bass Estate Agents | Estate agentIndependent | 38today |
| Lexstone | Estate and letting agentIndependent | 32today |
| Alvi Real Estate Limited | Estate and letting agentIndependent | 19today |
| Kubie Gold Associates | Estate and letting agentIndependent | 10today |
| London Land and New Homes | Estate and letting agentIndependent | 2today |
| Michael Charles Lettings | Estate agentIndependent | 2today |
| Bargets Estate Agents | Estate and letting agentIndependent | 1today |
| Bloom Residential | Estate and letting agentIndependent | 1today |
| RED Property Partnership | Estate and letting agentIndependent | 1today |
| ALPHA LIVING LTD | Letting agentIndependent | 0today |
| AMM Properties | Estate agentIndependent | 0today |
| Charles Associates | Estate and letting agentIndependent | 0today |
| Christo & Co | Estate and letting agentIndependent | 0today |
| Citystyle Living Ltd | Estate and letting agentIndependent | 0today |
| David Birkett Estate Agents | Estate agentIndependent | 0today |
| Hunters Camden | Estate and letting agentThe Property Franchise Group | 0today |
| ATPS London Ltd | Letting agentIndependent | — |
| Adam Simmonos | Estate agentIndependent | — |
| Aless Management Ltd | Letting agentIndependent | — |
All agents in Westminster · Demographics and area data on Property Data
Company history
- Deen, Simon Michael appointed director
- Incorporated as Simon Deen Real Estate Limited (Companies House 12784282)
- Silver, Joanna appointed director
Officers
| Name | Role | Appointed | Resigned |
|---|---|---|---|
| Deen, Simon Michael | director | 2020-07-31 | |
| Silver, Joanna | director | 2020-07-31 |
Source: Companies House, company 12784282; Find a Local Agent historical market records.
Questions and answers
How many homes does Simon Deen Real Estate Limited have for sale?
14 when we checked on 2026-10-19.
How long has Simon Deen Real Estate Limited been trading?
Since 2020-07-31, about 6 years.
Which redress scheme is Simon Deen Real Estate Limited a member of?
The Property Ombudsman.
What do homes sell for near Simon Deen Real Estate Limited?
A median £685,000 in NW1 over the last 12 months (HM Land Registry, 249 sales).
Sources and freshness
| Source | Coverage |
|---|---|
| HM Land Registry Price Paid Data, full history (OGL) | NW1, 1995 to 2026, 19,972 sales |
| UK House Price Index, HM Land Registry (OGL) | Westminster, January 1995 to July 2026 |
| HM Land Registry Price Paid Data (OGL) | NW1, last 12 months |
| Companies House (free company data product) | 12784282, Active |
| The Property Ombudsman and Property Redress Scheme registers | Office details, February 2026 |
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