Transforming Bedrooms To Bathrooms: What's The Real Cost?

Turning a bedroom into a bathroom can be a great way to add value to your home and improve your current living space. However, it can be an expensive project, with costs varying depending on several factors. The average cost of converting a bedroom into a bathroom ranges from $5,000 to $75,000, but prices can go as high as $160,000 for a large bathroom with premium materials and fixtures. In the UK, the cost can be anywhere between £7,000 to £24,000.

One of the major factors influencing the cost is the size of the bathroom. A bathroom conversion typically costs $200 to $250 per square foot, while a bathroom addition can cost up to $400 to $600 per square foot. The type of bathroom, such as a half bath or full bath, will also impact the price, with a full bathroom being more expensive. Additionally, the location of the new bathroom can affect the final cost, as running plumbing and electrical work to a room far from existing utilities can be costly.

It's important to consider the cost of labour, which makes up about 55% of the total project cost. Hiring licensed contractors, such as plumbers and electricians, is essential to ensure the work meets safety and code standards. Obtaining the necessary permits and inspections is also crucial and can add to the overall expense.

Overall, turning a bedroom into a bathroom can be a significant investment, but it may be worth it for the added convenience, privacy, and value it brings to your home.

Planning permission and building regulations

Planning Permission:

In most cases, you won't need planning permission to turn a bedroom into a bathroom. However, if the building is listed or part of a house extension, you may require planning permission. Obtaining the necessary permits shouldn't be a significant concern, but it's crucial to ensure you have the proper permits for your area before starting any renovation work.

Building Regulations:

Building regulations will likely come into play when adding a new bathroom to a space that wasn't previously a bathroom or kitchen. The regulations aim to ensure that adequate drainage, ventilation, electrical safety, fire safety, and structural stability requirements are met.

• Structural alterations, such as removing walls or chimney breasts.
• Installing new drainage, waste pipes, or extract ventilation.
• Adding new gas fittings, boilers, or electrical circuits.
• Floor strengthening, especially when installing a heavy cast iron bath.
• Electrical work, which must be carried out by a qualified electrician or certified by a Competent Person.

It's important to maintain open communication with your local authority's building control office throughout your refurbishment. They can provide guidance and ensure your project complies with all relevant building regulations.

Cost of plumbing

Plumbing is a significant cost factor when converting a bedroom into a bathroom. The cost of plumbing will depend on the complexity of the work and the distance from existing plumbing.

Plumbers typically charge $45-$200 per hour. The further away your new bathroom is from existing plumbing, the more it will cost to install. If the bedroom is far from water and sewer lines, plumbing costs can be substantial. You may also need a new septic tank, depending on its current capacity and local requirements. On average, plumbing costs can range from $1,000 to $10,000, but can go as high as $15,000.

Additionally, you will need to consider the cost of electrical work, which is necessary for lighting, outlets, and ventilation. Electricians typically charge $50-$100 per hour, and electrical work for a new bathroom can cost $500-$2,500.

Converting a bedroom into a bathroom can be a costly endeavour, with the average cost ranging from $10,000 to $30,000 or more, depending on various factors. However, by considering the cost breakdown and planning carefully, it is possible to turn a bedroom into a functional and luxurious bathroom.

Size of the room

The size of the room is a significant factor in determining the cost of converting a bedroom into a bathroom. A larger room will require more materials and labour, resulting in higher costs. For example, converting a bedroom into a primary bathroom with a spacious layout can cost upwards of $20,000. On the other hand, a small half bath or powder room, typically ranging from 15 to 20 square feet, can be installed for as little as $3,000 to $12,000.

When considering the size of the room, it is also important to ensure that all the desired fixtures and fittings can be accommodated. A full bath with a sink, toilet, shower, and bathtub requires more space than a three-quarter bath or a half bath. Therefore, the size of the bedroom should align with the type of bathroom being installed.

Additionally, the location of the waste and soil pipes, hot and cold water supplies, and the proximity to an existing bathroom can impact the cost. Converting a bedroom that is adjacent to or above an existing bathroom can reduce costs by simplifying the diversion of plumbing services.

It is worth noting that the cost per square foot for a bathroom conversion is typically between $200 and $250, while building a new bathroom addition can cost $400 to $600 per square foot. Therefore, the size of the room plays a crucial role in determining the overall cost of the project.

Natural light and privacy

Natural Light

• Enlarge windows or install skylights to increase natural light.
• Use strategic placement of mirrors to bounce natural light around the room.
• Opt for light-coloured or reflective surfaces, such as white or pale walls, tiles, countertops, and mirrored vanities, to make the space appear brighter and bigger.
• Choose glass, metal, or glossy finishes for fixtures and fittings to maximise light reflection.
• Incorporate plants near windows to reflect and disperse sunlight, while also adding a touch of nature to the space.
• Remove any outdoor obstacles, such as large shrubs or trees, that may be blocking natural light from entering the bathroom.
• Consider using natural light-reflecting paints on walls, ceilings, and furniture to brighten up the space.
• Install window treatments made from translucent materials, such as frosted glass or resin, to allow soft, diffused light into the room while maintaining privacy.
• Utilise lighting fixtures that provide focused lighting, such as wall-mounted sconces on either side of a vanity mirror.
• Opt for light bulbs with a higher wattage and a daylight glow instead of a warm glow.

Privacy

• Use window treatments such as blinds, curtains, or film to control privacy while still allowing natural light to enter.
• Choose unorthodox window shapes, such as floor-to-ceiling windows or windows that continue across the ceiling, to provide views and natural light without compromising privacy.
• If privacy is a concern, opt for white translucent glass or adjustable louvered windows to control ventilation and transparency.
• Consider the placement of your new bathroom in relation to neighbouring properties to maintain privacy, and seek approval from neighbours if necessary.
• Balance the amount of natural light and privacy by strategically designing the layout and features of your new bathroom.

Ventilation

Bathroom Fan

If your bathroom has no window, you will likely need to install a bathroom vent fan to meet building codes. These fans come in various types, including simple box fans, combination fan/light fixtures, fan/light/heater fixtures, and wall-mount fans. When selecting a fan, opt for one with a cubic-feet-per-minute (CFM) capacity that matches your bathroom's square footage. For instance, an 80-square-foot bathroom would require an 80 CFM fan. If you have a jetted tub, add an extra 100 CFM to compensate for the increased moisture.

Installation

If you're replacing an old fan, the project may be suitable for a DIY approach if you're comfortable with basic electrical work. However, if you're installing a fan in a bathroom that didn't previously have one, it's best to hire a professional as it will require extensive electrical wiring and roof vent installation.

Location

Ensure your fan is installed near the tub or shower, but not directly next to an air conditioning or heating vent. The forced air from these vents can disrupt the fan's ability to draw humid air. Make sure your exhaust fan vents outside, rather than into the attic or another area of the house.

Run Time

Let the fan run throughout your bath or shower, and leave it on for at least 15 minutes afterward to fully ventilate the space. If your mornings are busy, consider a fan with an automatic humidity sensor that turns on and off as needed.

Maintenance

Keep your fan clean and well-maintained. At least twice a year, give it a thorough cleaning by shutting off the electrical circuit, removing the cover, vacuuming away dust and grime, and then replacing the cover.

Alternative Ventilation

If your bathroom doesn't have a fan, utilise the door and window to let out steam. Open the window during and after your shower or bath, keeping it open for at least 15 minutes afterward. If a window isn't an option, keep the door slightly ajar during your shower, and then open it fully when you're done.

Frequently asked questions