Planning permission in Hounslow

In the last 12 months, 77.1% of home project applications were approved in Hounslow (568 decided): extensions, loft conversions and similar work. A typical home project decision takes about ten weeks (median 68 days).

Across all application types, 82.4% of 8,824 applications decided since May 2023 were approved. Based on Hounslow's public planning register. Data last updated: 21 May 2026.

10,386Total applications

8,824Decided

82.4%Approval rate (of decided)

7,271 Approved+1,553 Refused+770 Withdrawn+750 Pending+42 Outcome not determined=10,386 Total

Reports for Hounslow are coming soon.

We are not yet generating property reports for Hounslow. You can still look up an address to see its planning constraints (conservation area, listed building, Article 4 direction, flood zone), and leave your email to hear when Hounslow reports go live.

Look up a property in Hounslow See a sample report

By Development Category

All applications on record, not only the last 12 months.

Category	Decided	Approved	Refused	Approval rate
Home extensions and alterations (householder)	2,367	1,722	645	72.8%
Discharging planning conditions	1,319	1,190	129	90.2%
Certificate of lawfulness (confirming permitted development)	1,173	1,082	91	92.2%
Tree works in a conservation area	1,120	1,104	16	98.6%
Full planning applications	1,083	653	430	60.3%
Larger extensions (householder prior approval)	502	455	47	90.6%
Minor amendment to an approved scheme (S96a)	245	208	37	84.9%
Advertisement Consent	194	145	49	74.7%
Protected tree works (TPO)	176	163	13	92.6%
Certificate of lawfulness (existing use)	132	132	0	no refusals recorded
Listed Building Consent	124	100	24	80.6%
Changing a planning condition (S73)	92	79	13	85.9%
Legal Agreement modify or discharge a planning obligation	74	69	5	93.2%
PA: Commercial/Business/Service to Dwellinghouses	37	23	14	62.2%
Prior Approvals all others	34	20	14	58.8%
Prior Approval Office to Residential	31	23	8	74.2%
Major Housing 10 units or more	21	18	3	85.7%
PA: Installation or alteration of solar equipment on non-domestic premises	20	19	1	95.0%
Other*	80	66	14	mixed types

Certificate of lawfulness (existing use): no refusals are recorded in this category for this authority, so no approval rate is shown.

* Other combines smaller categories: Screening (12), PA: Notification of Demolition (10), Phone masts and telecoms (10), All other major (9), Major General industry / storage / warehousing (6), PO-Outline Application (4), Council's own Development (4), Variation/removal of a condition Minor dwellings (4), PA: Commercial/Business/Service etc. to mixed use up to including 2 flats (3), Consultation from an Adjoining Borough (2), PA: Retail to Residential (2), PA: New Flats on top of detached Commercial Buildings (1), Council Own Major (1), PA: New Flats on top of detached block of Flats (1), PA: New Flats on top of Terraced Commercial Buildings (1), PA: Demolish and replace building used as Dwellinghouses (1), Variation of condition Major General industry / storage / warehousing (1), Prior Approval Details (1), PRIOR APPROVAL HOUSE HOLDER (1), PA: Takeaway/Sui Generis/Mixed Use to Dwellinghouses (1), Demolition in a Conservation Area (1), Permission in Principle (1), Minor - Retail distribution and servicing (1), Prior Approval Additional storeys on a Dwellinghouse (1), Prior Approval Change of Use - Agriculture to flexible Commercial Use (1).

Quarterly Trend

The most recent three years. Earlier decisions are included in the totals above but not in this chart.

Quarter	Decided	Approved	Approval rate
Q3 2023	314	246	78.3%
Q4 2023	760	582	76.6%
Q1 2024	740	580	78.4%
Q2 2024	750	609	81.2%
Q3 2024	808	688	85.1%
Q4 2024	905	745	82.3%
Q1 2025	811	636	78.4%
Q2 2025	842	694	82.4%
Q3 2025	778	670	86.1%
Q4 2025	720	636	88.3%
Q1 2026	692	603	87.1%
Q2 2026	388	333	85.8%

By Ward

The 12 wards with the most decided applications, across all years. 896 further decided applications fall in wards not shown.

Among wards with at least 20 decided applications, approval rates range from 74.5% in Heston Central to 90.8% in Chiswick Riverside, a gap of 16.3 percentage points.

Ward	Decided	Approved	Refused	Approval rate
Chiswick Homefields	918	796	122	86.7%
Chiswick Gunnersbury	873	774	99	88.7%
Osterley & Spring Grove	696	573	123	82.3%
Chiswick Riverside	611	555	56	90.8%
Syon & Brentford Lock	455	383	72	84.2%
Bedfont	390	306	84	78.5%
Feltham North	378	306	72	81.0%
Hounslow South	369	281	88	76.2%
Heston Central	365	272	93	74.5%
Hanworth Village	350	271	79	77.4%
Heston West	347	283	64	81.6%
Hanworth Park	312	241	71	77.2%

Frequently asked questions

What is the planning approval rate in Hounslow?

In the last 12 months, 77.1% of home project applications (extensions, loft conversions and similar work) were approved in Hounslow, based on 568 decided applications. Across all application types, 82.4% of 8,824 applications decided since May 2023 were approved.

How long does a planning decision take in Hounslow?

The median time from submission to decision for home project applications decided in Hounslow in the last 12 months was 68 days (about ten weeks). Times vary case by case.

Do I need planning permission in Hounslow?

It depends on the project and the property. Many home projects fall under permitted development rights, but constraints such as conservation areas, listed buildings and Article 4 directions change what needs permission at a specific address. See our guides to permitted development rights and Article 4 directions.

Do I need a planning consultant in Hounslow?

Many home projects do not need one. A straightforward extension on an unconstrained property is often handled directly with the council, or with an architect or agent preparing the drawings. A consultant is more likely to earn their fee where the site is constrained, the council has refused similar schemes, or an appeal is in prospect. Understanding your property's constraints and the council's recent decisions first makes any conversation with a professional a better-informed one.

Planning guides

Not sure what you can build without planning permission? See our guides to permitted development rights, Article 4 directions and planning costs.

Reports for Hounslow are coming soon. Look up an address now to see its constraints, and join the waitlist.

Look up a property in Hounslow See a sample report