ARCHITECT-LED DESIGN AND BUILD

House Extensions in Kirk Ella

Where a plot has room at the side and depth at the back, the two storey extension is usually the better arithmetic. One set of foundations and one roof serve two floors. What it also brings is a harder planning question, and a build that reaches the bedrooms rather than staying downstairs.

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Going Up

when the second storey is worth it.

The case for a two storey extension is straightforward. The foundations, the ground floor slab and the roof are the expensive elements, and adding a first floor spreads them across twice the area. On the larger detached and semi-detached houses common around Kirk Ella, where the plot has the side gap and the garden depth to take it, that is often the difference between a kitchen extension and a properly reworked house.

The case against is that it is a different order of project. The officer will look at bulk on the rear or side elevation, at overlooking from new upper windows into a neighbour's garden or windows, and at whether the extension still reads as subordinate to the original house. Setting a side extension back from the front elevation, keeping its ridge below the existing one, and being careful with where the upper windows look are the moves that usually make it work.

Structurally, a second storey asks more of what is underneath it. The existing foundations may need supplementing where the new work ties in, an attached garage almost certainly needs checking before anything is built above it, and the roof has to be resolved as a single design rather than a new pitch abutting an old one.

  • Full two storey and part two storey rear and side extensions
  • Over-garage first floor additions where the structure below allows
  • Foundation and structural assessment of the existing house
  • Roof form designed as one, with the ridge kept below the original
  • Upper window positions planned around overlooking from the start

Our Process

how we work.

01

Site Visit

Measured survey of the house, the side gap and the garden, with levels and drains recorded.

02

Structure

We establish what the existing foundations and walls will carry before deciding how far the scheme can go.

03

Options

Single storey, part two storey and full two storey compared on cost per square metre and on planning risk.

04

Route

Whether it is permitted development or a full application to East Riding of Yorkshire Council.

05

Approvals

Planning, building regulations and party wall notices, all prepared and managed by us.

06

Build

The architect who designed it runs the site, to the build figure quoted before work started.

Kirk Ella

two floors for one set of foundations.

The second storey is the cheapest floor area you will ever add, because the expensive parts are already being paid for underneath it and above it.

Planning authority: East Riding of Yorkshire Council

The Alternative

when single storey is the better project.

Not every house wants a second storey. If the bedrooms you have are enough and the problem is the ground floor, a single storey rear extension delivers the same result with less planning risk, less disruption and no work above your head. On a deep plan it needs a daylight strategy, because pushing the back wall out several metres leaves the middle rooms further from any window, and roof lights or a lantern have to be designed in rather than added later.

There is a middle option that is often overlooked. A part two storey scheme, single storey where the depth would otherwise overshadow a neighbour and two storey where it will not, tends to get a smoother reception than a full width two storey block and gives most of the extra space. It is worth putting all three side by side before committing to one.

  • Single storey rear extensions with a designed daylight strategy
  • Part two storey schemes stepped to protect neighbouring daylight
  • Wrap-around and side infill options where the plan is awkward
  • Internal reconfiguration so the existing rooms benefit as well
  • Heating and ventilation reassessed for the larger house
when single storey is the better project. - The Yorkshire Architect

Approvals

east riding of yorkshire council, and the ground.

Two storey work is more likely to need a full application than a modest rear extension, because permitted development treats height, eaves height near a boundary and side additions restrictively. Where an application is needed, East Riding of Yorkshire Council will assess daylight, overlooking, bulk, materials and parking where bedrooms are added. Where the scheme does fall within permitted development, a lawful development certificate is worth having in writing.

The Party Wall etc. Act is far more likely to bite on two storey work, because you are building higher against a shared or boundary wall and often excavating deeper alongside it. Notices need serving early, since the statutory periods run into weeks. Drainage and trees matter too, as a public sewer under the garden normally means a build over agreement and a mature tree on shrinkable ground can require a deeper foundation than the price assumed.

  • Full householder applications and lawful development certificates
  • Party wall notices served with the statutory periods intact
  • Drainage survey and build over agreement where a sewer is involved
  • Foundation depth allowance for mature trees on shrinkable ground
  • Building regulations drawings, calculations and inspection stages
east riding of yorkshire council, and the ground. - The Yorkshire Architect

Recent Work

projects near kirk ella.

House Extensions by The Yorkshire ArchitectHouse Extensions by The Yorkshire ArchitectHouse Extensions by The Yorkshire ArchitectHouse Extensions by The Yorkshire Architect

Questions

house extensions in kirk ella, answered.

Which council decides applications in Kirk Ella?

East Riding of Yorkshire Council. Kirk Ella lies outside the Hull city boundary, so it is assessed under the East Riding local plan rather than by Hull City Council. We submit through the Planning Portal and correspond with the case officer directly.

Is a two storey extension cheaper per square metre?

Usually, because the foundations, the ground slab and the roof are the costly elements and a second floor shares them. The saving is real, but it is offset if the existing structure needs strengthening or if the planning route becomes longer, which is why both are checked before a figure is given.

What will the council object to on a two storey extension?

The recurring points are bulk on the elevation, overlooking from new upper windows, loss of daylight to a neighbour, and whether the extension still reads as secondary to the original house. Each of those can be designed around, which is different from arguing about them after a refusal.

Do I need planning permission for a two storey rear extension?

More often than for a single storey one. Permitted development applies tighter limits to anything at first floor, near a boundary, or at the side, and the rules differ between detached and attached houses. Some two storey rear extensions do fall within the rights, but it depends on the house and its position.

Will my existing foundations take a second storey?

Sometimes, and sometimes they need supplementing where the new work ties into the old. It depends on what is there, the ground conditions, and how the loads are carried down. It is checked with the engineer before the design is fixed rather than found out when the trench is open.

Can I build a first floor over my garage?

Often, if the garage foundations and walls can carry it. Attached garages are frequently built lighter than the house, so underpinning, a new beam over the door opening, or partial rebuilding are common. All of that is assessed and priced before you commit, not added afterwards.

Will it overlook my neighbour?

That is the point the officer will test hardest, and it is manageable. High level windows, obscured glazing to a flank elevation, or simply positioning the openings to look down your own garden rather than across a boundary all resolve it. It has to be part of the design rather than a concession offered later.

How disruptive is a two storey build?

More than a single storey one, because the work reaches the bedrooms and the roof. Most of the new structure goes up before the existing wall is opened, so the genuinely open period is short, but you should expect months rather than weeks. We give you a programme with the quote.

Do I have to move out?

Usually not. The disruptive stretches are the groundworks, the day the openings are formed and the roof tie-in. Where a scheme takes out the only bathroom or the only kitchen for an extended period, we would flag it before you commit so you can plan around it.

Do you cover the villages near Kirk Ella?

Yes. Anlaby, Willerby, Swanland, Hessle and North Ferriby are all in the same authority and we work across them and into Hull. The policy framework is identical while the plots and house types vary enough to change what is sensible on each one.

Do you build the extension as well?

Yes. The practice is architect-led design and build, so the architect who draws the scheme oversees the construction. That keeps the built detail faithful to the drawn one, and the build cost quoted at the start is the figure we stick to.

How long do the approvals take?

A householder planning application is normally determined within eight weeks of validation, and validation is where time is most often lost, so the submission goes in complete. Party wall notice periods run alongside, and the building regulations package is prepared in parallel rather than afterwards.

put the options side by side.

A free consultation in Kirk Ella, a measured survey, and a straight comparison of single storey, part two storey and full two storey before you choose.

Book a ConsultationCall 07466 296416