Site Review Checklist for Building or Renovating a Home in NSW

Before you finalise a home design or compare builder prices, review the site. Dimensions, orientation, slope, drainage, access, services, planning controls and existing structures can all affect the layout, approval pathway, construction approach and budget.

This site review checklist is for NSW homeowners, land buyers and families considering a custom home, knockdown rebuild, duplex, renovation, extension or granny flat. It helps identify questions to resolve early, while showing where a visual review must be followed by qualified surveying, engineering, geotechnical, planning or certification advice.

What a residential site review should cover

A site review is an early investigation of how a property may support your intended project. It can include a document review, a site visit and a discussion about design, planning, construction and budget implications.

A site inspection or initial builder review is an early practical assessment. A site survey records measured features and boundaries. A site analysis interprets the property’s conditions and relationship to adjoining land and the streetscape. These activities overlap, but they are not interchangeable.

NSW planning guidance recommends analysing a site and its relationship to adjoining land and the streetscape during planning and design. Soil, slope, zoning, flood or fire risk, development guidelines and BASIX requirements may also affect planning and tendering. See the NSW site analysis guidance.

Check	Why it matters	Question to ask
Boundaries and dimensions	They influence setbacks, building width, parking and floor area.	What confirms the legal boundary and measured dimensions?
Orientation and neighbours	They affect sunlight, privacy, views, windows and outdoor areas.	How should the design respond to the street and adjoining properties?
Slope, drainage and soil	They may affect levels, retaining, foundations and site preparation.	What testing or allowance is needed?
Access and services	They influence demolition, deliveries, temporary works and connections.	Which logistics and services are confirmed?
Planning controls	They can shape the building envelope and approval pathway.	Which controls need property-specific advice?

1. Check property documents, boundaries and constraints

Gather the title, deposited plan, contract documents, any available survey, previous plans and information about easements, covenants, restrictions or shared access arrangements.

• Check frontage, depth, lot shape and orientation against what appears on site.
• Identify easements, drainage corridors, rights of way and restrictions that could affect the building area.
• Ask whether boundary markers are reliable or whether a registered survey is required.
• Record previous approvals, conditions or unresolved property matters.

Do not assume a fence, retaining wall or driveway marks the legal boundary. If the design depends on a tight setback, duplex separation, granny flat location or extension line, ask a qualified surveyor what must be confirmed.

2. Record dimensions, orientation and physical conditions

Verify the block’s width, depth, frontage, access point and significant level changes. A narrow frontage, irregular shape or restricted side access can influence room arrangement, parking, construction access and facade design.

Record orientation and observe where sunlight falls. Note adjoining windows, balconies, high walls, trees, overlooking opportunities, views, noise sources and the character of the street. A thorough review should consider block dimensions and orientation alongside access, slope, drainage and planning controls.

These observations do not replace shadow diagrams, privacy assessments or formal planning advice. They help frame useful questions about living areas, alfresco spaces, privacy, a duplex configuration or secondary dwelling.

Slope, drainage and soil

Look for visible falls, low points, ponding, erosion, retaining walls, surface channels, damp areas and stormwater infrastructure. Ask how the proposed building platform would connect to existing levels and drainage.

Soil cannot be confirmed by visual inspection alone. Ground conditions may affect excavation, foundations, retaining, service trenches, stormwater management and site preparation. Planning Portal guidance identifies soil, slope, flood and fire risk as matters that can affect planning and tendering.

• Note exposed rock, fill, cracking, retaining structures and signs of movement.
• Ask whether a geotechnical investigation, engineering assessment, feature survey or stormwater design is needed.
• Check available information for flood, bushfire, contamination or other site risks.
• Ensure site-work allowances state what is included and what remains subject to investigation.

3. Check site access, services and construction logistics

Consider how vehicles, machinery, materials and waste will enter and leave the property. Record driveway width, kerb access, street parking, overhead wires, trees, tight corners, neighbouring driveways and restricted delivery areas.

Confirm the apparent location and status of water, sewer, stormwater, electricity, gas and telecommunications. Connection points may not be where the new design needs them, and a renovation or knockdown rebuild may require disconnection, protection or replacement. Ask who coordinates investigations, applications, temporary services and reconnections.

Also plan for storage, fencing, worker access, neighbour communication and protection of retained areas. These details can affect sequencing, site preparation and proposal assumptions. NSW guidance notes that land may need preparation before construction starts, and construction requires the relevant certificate and principal certifier before work begins.

4. Review existing structures before renovating or rebuilding

For an established home, document the floor plan, structural walls, levels, roof form, services, previous alterations, access and areas that must remain operational. Note cracking, moisture, uneven floors and signs that previous work may not match available records.

An early site review can reveal how existing structure and access constraints may affect renovation scope. It cannot confirm every concealed condition, so agree how unexpected conditions will be documented and priced if walls, floors or services are opened.

For a knockdown rebuild, check demolition access, service disconnections, hazardous-material questions, trees, neighbouring structures and vacant-possession timing. For an extension, ask whether new work can connect cleanly to the existing structure, levels, roof and services.

5. Confirm planning controls and the likely approval pathway

Planning questions should be property-specific. Depending on the site and proposal, investigate zoning, setbacks, height, site coverage, landscaping, parking, privacy, heritage, flood or fire risk, BASIX requirements and relevant development controls.

Do not treat a preliminary design as proof that a project is approvable. A custom home, duplex, granny flat, renovation and extension may involve different questions. Confirm the pathway with the relevant council, planner, certifier, designer or other qualified adviser.

Before construction begins in NSW, the project must have the required construction certificate and principal certifier arrangements. Confirm what the builder is coordinating, what you must arrange and which costs are included.

6. Match findings to the right project pathway

• Custom home: Use orientation, access, dimensions, views, privacy and levels to shape a site-aware layout rather than forcing a preset plan onto the block.
• Knockdown rebuild: Review demolition, service disconnection, access, planning controls and the replacement home’s relationship to neighbours.
• Duplex: Investigate frontage, vehicle access, private open space, services, separation and the relevant planning pathway before relying on an indicative layout.
• Renovation or extension: Understand structure, concealed conditions, levels, services, occupied-home logistics and the point at which rebuilding may be more workable.
• Granny flat: Check building area, access, services, privacy, outdoor space and property-specific planning requirements before assuming suitability.

When an initial review is not enough

Arrange specialist input when uncertainty could materially change the design, approval pathway or budget. Triggers include unclear boundaries, significant slope, suspected fill or unstable ground, drainage problems, complex easements, unusual access, demolition concerns, heritage questions or uncertainty about flood, fire or other planning constraints.

The appropriate professional may be a registered surveyor, engineer, geotechnical specialist, planner, certifier or another adviser with relevant expertise. Ask who obtains each report and how its findings will affect the design and proposal.

What to take to the first builder briefing

• Title, deposited-plan and available survey information.
• Site photographs showing boundaries, levels, access, neighbours and existing structures.
• Existing plans, renovation records, approvals and demolition information.
• Your preferred pathway, required rooms, household routines, storage, outdoor use and future needs.
• A realistic budget range separating essentials from items that could be deferred.
• Known constraints, unanswered questions and specialist reports already obtained.

Ask the builder to explain the next step, information still required, approval responsibilities, design process and when site assumptions will be tested. A coordinated process should clarify the move from consultation and site review through design, estimate, approvals, selections, construction and handover.

How to compare builder proposals after the site review

Do not compare headline prices alone. Give each builder the same site information and brief, then check whether every proposal responds to the same scope.

Request an itemised inclusions schedule identifying site works, allowances and exclusions. Compare design scope, demolition, excavation, retaining, drainage, service connections, approvals, energy requirements, facade, finishes, landscaping assumptions and owner-supplied items.

• Mark every provisional amount and ask what would make it more certain.
• Check whether survey, engineering, soil testing, certification and planning costs are included or excluded.
• Ask who coordinates approvals, suppliers, logistics, inspections and variations.
• Confirm assumptions about access, levels, existing services, demolition and site preparation.
• Review payment stages, variations, insurance and defect handling with an appropriately qualified adviser before signing.

Site review checklist recap

1. Collect title, deposited-plan, survey and approval information.
2. Verify boundaries, dimensions, orientation, easements and restrictions.
3. Record slope, levels, drainage, retaining, soil clues and visible risks.
4. Assess sunlight, privacy, views, neighbours and streetscape.
5. Check access, delivery space, trees, storage and services.
6. Review existing structure, alterations, demolition and concealed-condition risks.
7. Identify planning, BASIX, flood, fire, heritage and approval questions.
8. List investigations required before design, tender or construction.
9. Compare builder inclusions, allowances, exclusions and responsibilities.
10. Keep an open-questions register and record who will answer each question.

Site review checklist FAQ

What is included in a residential site review checklist?

It should cover documents, boundaries, dimensions, orientation, slope, drainage, soil clues, access, services, neighbouring context, existing structures, demolition, planning controls, approvals and budget assumptions.

Is a builder’s site review the same as a survey or soil test?

No. An initial review identifies visible conditions and questions. A survey measures property features, while soil testing and engineering assessments address technical issues.

When should I arrange a site survey or geotechnical investigation?

Arrange specialist investigation when boundaries, levels, soil, slope, drainage or foundation conditions are uncertain or could change the design and price.

Can a site review confirm whether a duplex or granny flat is allowed?

No. It can identify questions about frontage, access, services, setbacks and open space. Confirm the applicable controls and approval pathway for the property.

Which site findings should appear in a builder’s proposal?

The proposal should explain site works, demolition, excavation, retaining, drainage, service connections, approvals, allowances, exclusions and assumptions. Items dependent on testing or approval should be identified clearly.

Conclusion: review the site before committing to the design

A site review turns a general home idea into a site-aware brief. Checking documents, dimensions, orientation, levels, drainage, soil, access, services, neighbouring conditions, existing structures and planning questions early helps identify decisions that need specialist advice.

For homeowners across Western and Northwest Sydney, bring your block information, project pathway, priorities and open questions to a builder who can explain the next step. King Style Homes invites you to discuss your block, brief and build pathway through its coordinated design, approvals, construction and handover process.