Home builders in Seaford
City of Onkaparinga · Planning and Design Code · Southern Adelaide Coastal
- Council
- City of Onkaparinga
- Planning scheme
- Planning and Design Code
- Overlays mapped here
- Hazards (Bushfire — General Risk) · Hazards (Bushfire — Urban Interface) · State Heritage Place · Regulated and Significant Tree
- Residential zones mapped
- General Neighbourhood
Housing Diversity Neighbourhood
Master Planned Neighbourhood - Bushfire-prone land
- Mapped in this suburb
- Acid sulfate soils
- None mapped
- Minimum Frontage
- 8m; semi-detached dwelling is 8m; row dwelling is 6m; group dwelling is 18m; residential flat building is 18m · 9m; semi-detached dwelling is 9m; row dwelling is 6m; group dwelling is 18m; residential flat building is 18m
- Minimum Site Area
- 250 sqm; semi-detached dwelling is 250 sqm; row dwelling is 150 sqm; group dwelling is 175 sqm; residential flat building is 175 sqm · 270 sqm; semi-detached dwelling is 270 sqm; row dwelling is 180 sqm; group dwelling is 200 sqm; residential flat building is 200 sqm
- Maximum Building Height (Metres)
- 10.5m to 24.5m
5 different values mapped across the suburb - Maximum Building Height (Levels)
- 2 levels to 6 levels
4 different values mapped across the suburb
Planning data from Planning and Design Code via SAPPA (PlanSA) (CC BY 4.0), read 2026-09-14. Suburb-level, not a report on your block — check your address on the SA Property and Planning Atlas.
Builders serving Seaford
None yet — tell us what you're building and we'll go and find one.
What building in Seaford actually involves
Seaford's numbers are the smallest we have published in South Australia: minimum site area for a detached dwelling of 250 sqm with an 8m minimum frontage, and building heights mapped up to 24.5m and six levels in parts of the suburb.
Small lots and tall buildings in three square kilometres
The Code maps General Neighbourhood, Housing Diversity Neighbourhood and Master Planned Neighbourhood here, and the range that produces is wide: a 250 sqm detached lot at one end, six-level land at the other. Which band your block sits in is the first question and it decides the product entirely.
Bushfire at the urban interface
Seaford is mapped in the Code's Hazards (Bushfire) overlay at General Risk and Urban Interface. Urban Interface is the band where suburb meets bush, and it is where a Bushfire Attack Level assessment actually bites — the rating changes glazing, screening and external materials.
Trees are a control
The Regulated and Significant Tree overlay applies. Established trees frequently decide where a house can physically sit on a small lot, and removal is regulated rather than discretionary.
What to ask a builder
Ask which neighbourhood zone applies and what minimum site area and frontage go with it. Ask what BAL rating is priced in. And on a 250 sqm lot, ask what site coverage and setbacks the design actually assumes.
Local landmarks in Seaford
- All Saints Primary School
- Moana Primary School
- Seaford Library
- Seaford Secondary College
- Seaford Secondary School
- Seaford CFS Station
Questions about building in Seaford
What is the minimum block size in Seaford?
The Code maps a 250 sqm minimum site area for a detached dwelling with an 8m minimum frontage in parts of the suburb, and 270 sqm with a 9m frontage in others. Which applies depends on the zone at your address.
How tall can I build in Seaford?
Mapped maximum building heights run from 10.5m up to 24.5m, and from two levels up to six, in different parts of the suburb. The zone at the address decides which applies.
Is Seaford bushfire-prone?
It is mapped in the Code’s Hazards (Bushfire) overlay at General Risk and Urban Interface. Urban Interface is where suburb meets bush, and a Bushfire Attack Level assessment there changes the external construction specification.
Do tree controls apply?
The Regulated and Significant Tree overlay is mapped. On a small lot an established tree often decides where the house can sit, and removing one is regulated rather than a design choice.
What zone is Seaford?
General Neighbourhood, Housing Diversity Neighbourhood and Master Planned Neighbourhood are all mapped. The range between them is wide, so confirm the zone before assuming what fits.