Older or higher-risk residential conversions, particularly Houses in Multiple Occupation (HMOs), throw up a different set of challenges to a standard single-family refurbishment. More bedrooms, more bathrooms, tighter fire safety and licensing requirements, and often a building fabric that hasn’t been touched in decades. Having recently completed a full renovation of an 8-bed HMO in Lancashire, here’s the staged approach that kept the project on budget, on schedule, and avoided the costly mistakes we regularly see on projects like this.
Start With a Proper Condition Survey, Not Assumptions
It’s tempting to walk an older property, form a gut impression, and start pricing up the obvious jobs. On a higher-occupancy conversion that’s a mistake. Issues that are minor in a single-family home, a damp patch in one corner, an ageing electrical consumer unit, a slightly undersized extractor, become compliance failures once the same building is housing eight unrelated tenants under HMO regulations. A full condition survey before any work is priced gives you the real scope, not the visible 80%.
Fire Safety and Means of Escape Come Before Anything Cosmetic
For any HMO conversion, fire safety isn’t an add-on at the end of the job, it drives the whole sequence. Fire doors, protected escape routes, interlinked smoke and heat detection, and emergency lighting all need to be designed in before a single wall gets replastered, because retrofitting them around finished decor is expensive and often means undoing work that’s just been completed. On our recent 8-bed conversion, we mapped the full escape strategy with building control before committing to any room layout changes, which avoided having to move a stud wall we’d already built.
Building Fabric Next: Get the Basics Right Before the Finishes
With fire strategy settled, the next stage is the building fabric, insulation, damp-proofing, and any structural repairs. This is the least visible work and the easiest to skimp on, but it’s also the stage most likely to cause expensive problems later if it’s rushed. Older properties, especially solid-wall construction common in a lot of pre-1930s Lancashire housing stock, need this done properly rather than quickly: get it wrong and you’re dealing with trapped moisture and damp issues within a couple of years, which is a far more expensive fix than doing it right the first time.
Mechanical and Electrical: Size It for Occupancy, Not for the Building’s Original Use
A property built as a single-family home decades ago was never wired or plumbed for eight independent tenants running kettles, showers and heating on their own schedules. Consumer units, water pressure, and heating capacity all need re-assessing against actual HMO occupancy loads, not the original design. This is also the natural point to add individual room metering if you’re planning to bill tenants separately for utilities, retrofitting that after decoration is finished is a false economy.
Licensing and Compliance Sit Alongside the Build, Not After It
Most local authorities require a mandatory HMO licence for properties above a certain size, and the licensing conditions, room sizes, bathroom-to-tenant ratios, waste storage, need to be checked against your actual floor plan before you finalise room layouts, not after. Government guidance on HMO licensing requirements is worth checking early since licence conditions vary by local authority and can affect how many lettable rooms a property actually supports once compliant.
Cosmetic Work Goes Last, and That’s When the Property Finally Looks Finished
Once fire safety, fabric, and M&E are signed off, the visible finishing work, flooring, kitchens, bathrooms, decoration, is comparatively quick and low-risk. It’s also the stage that makes the biggest difference to how a property shows to prospective tenants, which is exactly why it should come last: doing it first, then having to disturb finished rooms for compliance work discovered later, is the single most common way these projects run over budget.
A Sensible Order, Summarised
1. Full condition survey
2. Fire safety and means of escape strategy, agreed with building control
3. Building fabric: insulation, damp-proofing, structural repairs
4. Mechanical and electrical, sized for actual occupancy
5. Licensing compliance checked against final room layout
6. Cosmetic finishes
It won’t be the exact right order for every property, a modern conversion and a Victorian terrace need different emphasis, but treating compliance and fabric as the foundation rather than an afterthought is what keeps a higher-risk conversion on budget.
What This Looks Like in Practice
On our own 8-bed conversion, sticking to this order meant the fire strategy and licensing checks were signed off before a single kitchen unit was ordered, which avoided the layout changes further down the line that tend to blow both budget and timeline on projects like this. It’s a slower start than jumping straight to visible work, but it’s consistently the difference between a project that finishes on budget and one that doesn’t.
D Blackburn Contractors has been carrying out building, renovation and HMO conversion work across Lancashire and the Ribble Valley since 2004.
