Home Additions and Alterations: NHBRC Rules and Approvals

Any home alterations or home additions to your original house structure can invalidate your NHBRC enrolment and property insurance if they aren't approved first. Before you start construction, you need council-approved engineer plans, a renewed NHBRC enrolment, an NHBRC-registered builder, and written notice to your bank and insurer. You must also avoid building on servitudes or over building lines without approval.

How Do Additions and Alterations Affect Your Warranties?

Any changes to the original structure of your house can invalidate your NHBRC enrolment and insurance cover under NHBRC regulations. This applies whether you're extending a room, adding a storey, or altering a boundary wall on your new development property. Protecting your property insurance starts with following the correct approval process before any work begins.

Learn more about NHBRC warranties in NHBRC Warranty & Repairs: What's Covered After You Move In.

Where to Get Approval for Home Additions and Alterations

Before making home alterations, you must:

• Have engineer-designed plans approved by your local council's Planning Department
• Inform your bank and the NHBRC of any planned home additions or alterations
• Renew your NHBRC enrolment before construction starts
• Submit the new NHBRC certificate to your bank and insurer

Skipping any of these steps can put your property insurance and NHBRC warranty at risk.

What is Allowed?

The builder you appoint must be registered with the NHBRC. Double-storey additions and boundary walls carry serious safety risks if built incorrectly, so these require extra care and full compliance with NHBRC regulations and council rules. Always confirm your stand boundaries before construction to avoid encroachment.

Read The Complete First-Time Home Buyer's Guide South Africa to get more insights on what happens after you move in. 

Servitudes

The municipality has the right to lay services on and under your property, typically the municipal sewer system, Eskom poles, sewer holes and electrical boxes. A servitude marks where these services run, and you are not allowed to build on a servitude.

Building Lines

A building line is a section of your erf, or stand, that you may not build on. Municipalities can relax a building line, but only if you apply for a relaxation at your local council and wait for their approval before starting construction.

Learn How to Use a Prepaid Electricity Meter if it's your first time. 

FAQ

Do home alterations affect my NHBRC warranty? 

Yes. Any change to your original house structure can invalidate your NHBRC enrolment and insurance cover unless you renew your enrolment and get proper approval first.

Who approves home additions and alterations? 

Your local council's Planning Department must approve your engineer-designed plans. You must also notify your bank and the NHBRC before starting construction.

Can I use any builder for my alterations? 

No. The builder must be registered with the NHBRC.

Can I build on a servitude? 

No. Servitudes mark where municipal services such as sewer lines, Eskom poles and electrical boxes run, and building on them is not allowed.

Can I build over a building line? 

Only if your local council approves a relaxation of the building line. You must wait for approval before starting construction.