Garage Conversion Drawings in Harrow

Where in Harrow does a garage conversion actually get determined?

Every Harrow postcode district we draw in, the stock that dominates it and the authority that validates a garage conversion there. Harrow fees below are the statutory England rates for 2026, not garage conversion estimates.

Which Harrow neighbourhoods suit a garage conversion best?

Roof pitch, wall build-up and plot depth change every few Harrow streets, and each one changes what a garage conversion can achieve at that address.

• Kenton (HA3) — garage conversion work in Kenton means 1930s semi-detached. Kenton is 1930s semi-detached. The integral and attached garages on these 1930s semis are the classic conversion — usually internal work only throughout HA3. Harrow Council decides the Kenton application, and Kenton station anchors the Kenton location plan.
• Wealdstone (HA3) — garage conversion work in Wealdstone means 1930s semi-detached, post-war flats. Wealdstone is 1930s semi-detached, post-war. The integral and attached garages on these 1930s semis are the classic conversion — usually internal work only throughout HA3. Harrow Council decides the Wealdstone application, and Wealdstone High Street anchors the Wealdstone location plan.
• North Harrow (HA2) — a garage conversion in North Harrow starts from 1930s semi-detached, and North Harrow reads as 1930s semi-detached. The integral and attached garages on these 1930s semis are the classic conversion — usually internal work only in HA2. Harrow Council assesses North Harrow garage conversions against its own North Harrow character guidance, and the location plan we draw for North Harrow references North Harrow Tube.
• South Harrow (HA2) — garage conversion work in South Harrow means 1930s semi-detached. South Harrow is 1930s semi-detached. The integral and attached garages on these 1930s semis are the classic conversion — usually internal work only throughout HA2. Harrow Council decides the South Harrow application, and South Harrow Tube anchors the South Harrow location plan.
• Harrow on the Hill (HA1) — a garage conversion in Harrow on the Hill starts from georgian and victorian houses, listed buildings, and Harrow on the Hill reads as Georgian and Victorian conservation hilltop. Georgian houses here predate the garage in HA1. Harrow Council assesses Harrow on the Hill garage conversions against its own Harrow on the Hill character guidance, and the location plan we draw for Harrow on the Hill references Harrow School.
• Pinner (HA5) — a garage conversion in Pinner starts from tudor fragments, edwardian villas, 1930s semi-detached, and Pinner reads as Tudor and 1930s village. Edwardian houses here sometimes carry a detached garage at the end of the plot in HA5. Harrow Council assesses Pinner garage conversions against its own Pinner character guidance, and the location plan we draw for Pinner references Pinner High Street.
• Stanmore (HA7) — 1930s semi-detached, Green Belt fringe defines Stanmore, where 1930s semi-detached, edwardian villas set what a garage conversion can do. Edwardian houses here sometimes carry a detached garage at the end of the plot across HA7. Any Stanmore garage conversion is validated by Harrow Council, with Stanmore Tube the usual Stanmore reference point on the site plan.

What local planning policy applies to a garage conversion in Harrow?

How designation changes a Harrow garage conversion: Harrow Council maintains 29 conservation areas, including Harrow Weald, Harrow on the Hill, Pinner Village. Inside any of them a Harrow garage conversion cannot rely on permitted development, and the route becomes a £548 householder application determined in 8 weeks rather than a £249 prior approval in 6 weeks. Harrow Weald sets the tone for Harrow casework.

Harrow permitted development status: there is no borough-wide direction from Harrow Council, so a garage conversion at a HA1 address is normally still permitted development. We certify that with a £274 Lawful Development Certificate rather than leaving a Harrow sale to argue it later.

What Harrow is built from: 1930s semi-detached dominates; Edwardian villas in Harrow on the Hill and Pinner; Metropolitan Green Belt in Stanmore and Harrow Weald; post-war flats around Harrow Central. Outer north-west London suburban; Harrow on the Hill has exceptionally strict heritage controls; rest of borough permissive. That mix decides the garage conversion route in Harrow more than the postcode does, and it is what a Harrow Council case officer reads first. A householder application costs £548 paid to Harrow Council direct, with 8 weeks to a decision once validated.

Who decides a garage conversion on the edge of Harrow?

• Hillingdon — cross the Harrow boundary and Hillingdon Council takes the garage conversion instead, applying 29 conservation areas of its own around HA4. We re-price garage conversions at the Harrow edge because Hillingdon policy and Harrow policy rarely align on garage conversion depth.
• Barnet — the Barnet boundary runs against Harrow, so a garage conversion a street from Harrow is decided by Barnet Council instead. Barnet runs 20 conservation areas across N2 and its neighbours, which is why garage conversions priced for Harrow are re-checked against Barnet policy whenever the Harrow address sits on that edge.
• Brent — cross the Harrow boundary and Brent Council takes the garage conversion instead, applying 22 conservation areas of its own around NW2. We re-price garage conversions at the Harrow edge because Brent policy and Harrow policy rarely align on garage conversion depth.

Sources for this Harrow garage conversion page: borough policies maps and conservation-area registers (2025–26), Royal Mail postcode district boundaries, the Town and Country Planning (Fees for Applications) (England) Regulations, the Town and Country Planning (General Permitted Development) (England) Order 2015 as amended, and the Party Wall etc. Act 1996.