Hertfordshire
Bifold proof slot for a Hertfordshire extension
Use this slot for a verified rear-opening project once real photos, specification, location permission and customer wording are available.
Green Property Windows & Doors
Fit-Only Window, Door and Bifold Installation Across London and the Three Counties
Already have your windows, doors or bifolds supplied? We provide professional fit-only installation for suitable products, subject to survey, product checks, opening checks and clear responsibility for certification.
Product, opening and responsibility checks before booking.
Survey-led quotes
Supply & fit or fit-only
Compliance route explained
Real project photos
Workmanship terms explained
Quick answer
What to know first
Fit-only is for homeowners, builders, developers, landlords and refurb teams who already have products supplied. Product suitability, opening condition, access and paperwork responsibility must be agreed before booking.
Options
Designed around your home
Bifold fit-only
Checked against the opening, product specification and finish details before ordering.
Window fit-only
Checked against the opening, product specification and finish details before ordering.
Door fit-only
Checked against the opening, product specification and finish details before ordering.
Builder/developer installation
Checked against the opening, product specification and finish details before ordering.
Customer-supplied products
Checked against the opening, product specification and finish details before ordering.
Product suitability checks
Checked against the opening, product specification and finish details before ordering.
Decision support
Supply & fit or fit-only?
We keep the choice practical: how the opening is used, how the product looks, what it needs to achieve and what route is needed for paperwork.
Not sure? Send photosNeed product suppliedSupply & fit
Already bought productFit-only checks
Need one accountable routeSupply & fit is simpler
Builder-prepared openingFit-only may suit
Process
Fit-only checks before installation day
1
Product details sent
Clear checks before we commit to the installation.
2
Product and opening checked
Clear checks before we commit to the installation.
3
Responsibilities agreed
Clear checks before we commit to the installation.
4
Installation booked
Clear checks before we commit to the installation.
5
Fit, test and handover
Clear checks before we commit to the installation.
Compliance
Compliance considered before the job starts
We explain the compliance route before you order, not after the job is finished.
Read our certification guideBuilding Regulations route
Checked where relevant and explained in plain English.
Part L energy performance
Checked where relevant and explained in plain English.
Part F ventilation
Checked where relevant and explained in plain English.
Safety glazing
Checked where relevant and explained in plain English.
Pricing factors
What affects the quote?
Product type
Confirmed before a final measured quote.
Product size
Confirmed before a final measured quote.
Opening condition
Confirmed before a final measured quote.
Access
Confirmed before a final measured quote.
Missing parts
Confirmed before a final measured quote.
Certification responsibilities
Confirmed before a final measured quote.
Disposal
Confirmed before a final measured quote.
Making-good
Confirmed before a final measured quote.
Project proof
Recent project examples
Greater London
Replacement window proof slot for a brick home
Reserved for a verified window replacement showing ventilation decisions, finish details and the agreed certification route.
London and the Three Counties
Composite front door proof slot
Reserved for a verified entrance upgrade with frame size, threshold, glazing safety and hardware choices documented.
FAQs
Common questions
Can you fit doors I bought online?
Possibly. We need product details, photos, dimensions and delivery information before accepting the job.
What if the product is the wrong size?
Incorrect, damaged or non-compliant products may not be installable.
Do you guarantee fit-only work?
Workmanship terms can be agreed, but product warranty usually remains with the supplier/manufacturer.
Who handles Building Control?
This must be agreed before installation. Some projects need a Competent Person Scheme route or Building Control approval.
Next step
Send photos, postcode and project details.
We’ll tell you what we need to check, what options are realistic and what compliance route may apply before you order.