Garden room costs in Newcastle, a clear guide

The cost of a garden room depends on its size, how it is built and where it is going. A small reading room on a flat lawn with easy access costs far less than a large, glass-fronted office on a sloping plot at the far end of the garden.

That is why we do not publish a price list. Standard prices for set sizes often leave out the items that change the total most, such as the base, the power supply and the finishing. Instead, we talk to you about how you will use the room, look at your garden and then send a fixed written quote for your project. Most homeowners in Newcastle find this far more useful than a headline figure that grows later.

Once the structure is decided, the inside and the area around the room shape the rest of the budget.

• Interior. Painted plasterboard is simpler than timber lining. Built-in desks, shelving and feature lighting add cost, which is common in a garden studio.
• Heating and cooling. Panel heaters are the simplest option. An air-to-air heat pump costs more to fit but can heat and cool efficiently.
• Water and drainage. A sink or WC means connecting to the water supply and drains, and the cost depends on distance and levels.
• Approvals. Most rooms need no planning application, but some do. Our planning permission guide explains when fees apply.
• Landscaping. Decking, paths and outdoor lighting help the room feel finished, but they are often missing from cheaper quotes.

If you are comparing quotes for garden rooms in Newcastle, ask these questions before you sign. They cover the items most often left out of a low price, and they matter as much for a contemporary garden room as for a small office.

• Is the base included, and what type is it? Is levelling a sloping site included?
• Does the price include the cable from the house, the trench and the Part P electrical certificate?
• Is extra labour for difficult access included?
• Is the inside fully finished, with flooring, lighting and heating?
• Are planning or Building Control fees included?
• Who removes waste and repairs the lawn afterwards?

Two quotes for a "4 × 3 metre garden room" can describe very different buildings. Compare the details rather than the total, and treat quotes from Newcastle firms and national suppliers the same way.

1. Floor area. Check whether sizes are internal or external, because thick walls reduce usable space.
2. Insulation. Ask for the type and thickness in the walls, floor and roof.
3. Glazing. Compare the number, size and type of doors and windows.
4. Extras. Check the base, electrics, decking and clearing up.
5. VAT. Every quote should say whether VAT is included, as a lower figure may leave it out.

A well-insulated garden room costs less to heat through a Newcastle winter and stays drier and more comfortable than a lightly built one. Good cladding and a sound base also mean less upkeep over the years.

A well-designed room may add appeal when you come to sell, although the effect depends on your home and the local market. The best value comes from building around how you will really use the space, for example as a garden office or a garden gym, rather than paying for size you do not need.