DIY telescopic bollard installation: what's really involved

You can buy a telescopic bollard online for roughly £280 to £430 and fit it yourself. Plenty of people do. Before you order, here's an honest look at what the job involves.

What the job involves

1. Check for buried services. Search utility records (LinesearchbeforeUdig is free), check for private pipes and cables, and scan the ground. See LSBUD explained.
2. Mark the position. Close enough to the car that it can't be driven round, far enough to open the doors.
3. Cut the surface. Core drill or cut through block paving, tarmac, resin or concrete.
4. Dig the hole. Typically 800mm to over a metre deep, depending on the post, and wider than the sleeve.
5. Set the sleeve. Bed it in concrete, perfectly level and at exactly the right height so the lid sits flush. Get this wrong and the post can jam or leak.
6. Drainage. Make sure water can drain away from the bottom of the sleeve.
7. Make good the surface. Reinstate the paving or surface neatly around the lid.
8. Fit and test the post. Once the concrete has set.

The tools you'll need

• core drill (often hired) or a disc cutter
• breaker or SDS drill for the sub-base
• cable avoidance tool and signal generator (hired)
• spade, post-hole tools, spirit level
• concrete, mixing kit and PPE: FFP3 mask, eye and hearing protection, boots, gloves

Hiring the core drill and scanner can add a fair amount to the cost, and the job takes most of a day if you haven't done it before.

The risk underground

This is the part that matters most. A bollard hole can easily reach the depth of a gas pipe, power cable or water supply. Read what's under your driveway before you dig, and follow HSE guidance on avoiding underground services.

Other things that go wrong

• Sleeve not level: the post sticks or leans.
• Lid too high or low: a trip hazard, or a puddle.
• No drainage: water collects, and the lock and mechanism suffer.
• Cracked paving: cutting block paving cleanly takes practice.
• Wrong position: the car can still get round it.

When DIY makes sense

If you have groundwork experience, the right tools, and you've done your checks properly, it can be a reasonable project.

If not, a professional fit costs more but includes the checks, the tools, a neat finish, insurance if anything goes wrong, and taking the waste away. Our cost guide shows what's included.

Questions people ask

How long does a DIY install take? For a first-timer, most of a day per post, plus time for the concrete to set.

Can I fit a bollard without a core drill? On some surfaces you can cut and lift blocks instead, but a core drill gives the cleanest finish.

Is a DIY-fitted bollard as secure? It can be, if the sleeve is set properly and deep enough. A shallow or poorly set sleeve is weaker.

Rather leave it to us? Send a photo for a fixed price