Rental Property Window Buyer's Guide

Rental windows need to comply with Building Regs (Part L energy, Part K safety, Part B fire escape) and with the Housing Act's Fitness for Human Habitation standard. Windows must be safe to operate, secure, and — on ground floors — restrictable. Non-compliant windows are increasingly cited in HMO licence refusals.

Every rented bedroom above ground floor needs a compliant egress window (450mm × 450mm openable, 0.33m² clear). Every window a child can reach in a rented property should have a releasable restrictor (100mm max opening). Both are legal requirements landlords are increasingly held accountable for.

Ground-floor and easily-accessible first-floor windows should have key-locking handles and, ideally, laminated inner panes. Insurance policies increasingly require this on rented HMOs; some local authorities require it as a licence condition. The upgrade cost per window is £15–£30.

Rental windows take more abuse than owner-occupied. Specify robust rather than premium: standard sculptured uPVC in white, mid-range espag hardware, standard hinges. Save the flush casement heritage-colour spec for the owner-occupied properties in your portfolio.

A £4,000 window replacement lasting 20 years costs £200/year. A £2,500 job lasting 8 years costs £312/year. Cheaper isn't cheaper. FENSA-registered installers, warm-edge spacer sealed units and reputable hardware brands typically deliver the lowest whole-life cost — usually 15–25% more up-front than the cheapest quote.