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What We Do

Sloping Blocks & Difficult Sites

With over 50 years of building knowledge and experience LP Warren's expert team will guide you through the entire process from concept to completion, designing the right home to suit your block conditions, giving careful consideration to the most cost-effective building design and construction methods to suit your budget. Each home is completely customised to suit individual needs and lifestyle requirements to the highest standards.

LP Warren Homes understands building a home can be a demanding experience. With this in mind, we set out to make the process of building a home a satisfying experience by keeping you informed every step of the way.

Sloping Blocks:

Sloping blocks often have all or some of the following characteristics:

  • No driveway access
  • Steep driveway access
  • Dense vegetation
  • A minimum 2 metre of fall over the building area
  • Tight or restricted access i.e. narrow block with fences erected

Difficult Sites:

Difficult Sites can be categorised as:

  • Blocks restricted by overhead power lines
  • Tight turning circles from road to driveway
  • Generally located at an inner city location
  • Require road traffic management due to one way road access
  • Dual occupancy blocks which often have limited access and a house either at the front or rear of the block that generally makes it difficult for trucks or machinery to access the site
  • Sites with a large percentage of low quality fill, controlled fill certified by an engineer or fill that has not compacted - generally require additional foundation engineering and can lead to an increase the cost of site works

The Challenges of building on a Sloping Block or Difficult Site:

Building on a sloping block or a difficult site has many challenges:

  • The gradient of the block
  • Height restrictions
  • Overlooking
  • Drainage
  • Soil retention
  • Engineering
  • Council compliance

Unlike many less experienced builders LP Warren Homes addresses each and every one of these challenges in detail to ensure each valued customer has a worry free build.

Gradient of Block:

We endeavour to create a design that maximises and suits the gradient of each sloping block to ensure minimal cut and fill requirements to contain costs.  However, the clients design brief is also a priority – it is a delicate balancing act.

There are many design options for building on a sloping block:

  • Split level
  • Double storey
  • Triple storey
  • Basements

Height restrictions:

Each design must comply with Victorian Building Regulations for height requirements, unless a planning overlay or building envelope is specified.  Typically a block that slopes down from the front creates a greater challenge to comply with building height requirements pending the block width.


Meeting the overlooking requirements to neighbouring private open space and habitable windows is always a challenge.  However, we have always been able to manage this successfully through the use of screens or obscure glazing when necessary.


Good drainage has always been achieved with every home we have ever built.  It is a legal requirement of the Building Code of Australia (BCA) which we always comply with.

Soil Retention:

Site cuts are typically kept to a minimum.  We design the floor level to the contours of the site. If large cuts are required retaining walls may be utilised.  These will be designed to reduce cost and wherever possible the earth is battered back to the natural surface.


All footings and structural members are designed in-house and certified by an engineer. This helps greatly in controlling construction cost which benefits you the customer.

Council compliance:

LP Warren Homes manages all council compliance matters

  • Town planning (overlays)
  • Building regulations compliance
  • Building heights
  • Covenants pertaining to the title of the block
  • Overshadowing
  • Overlooking and private open space

Are there any other issues that need to be considered when building on a sloping block or difficult site?

Water Run-off:

All site works are designed and constructed to comply with the Building Code of Australia (BCA).  The expertise of earth works contractors is always utilised for every project.

Environmental Considerations:

More often than not a project site will have a building overlay which governs how the land is used. If environmental compliance is required this will be specified in the overlay to be complied to. If an overlay is not present then compliance to the Building Code of Australia (BCA) is required.

Driveway Access:

Drive way access is a major consideration in the initial design process stages.  It is one of the first items addressed when siting a design on an allotment. The most common drive way angle is 11º (1:5).  Occasionally the driveway angle will have to be increased to 14º (1:4) due to the site constraints. Working within these ratios ensures that our client’s will have adequate vehicle access to the garage or site.

Orientation of New Home:

Maximising the northern aspect on a sloping block can be a challenging task. This is dependent on the street orientation, northern aspect of the block and the clients brief.  Orientating the home design in view of the living areas to the northern aspects (where possible) helps to achieve improved liveability and energy efficiency.