--- title: "Patio Extensions & Resurfacing in Cambridge" description: "Patio extensions and resurfacing in Cambridge. The survey assesses existing levels, specifies materials and quotes the dig and paving separately." canonical: "https://www.cambridgepatios.co.uk/services/patio-extensions-resurfacing" lastmod: "2026-10-05T11:28:40.315Z" --- # Patio Extensions & Resurfacing in Cambridge ![Patio Extensions & Resurfacing carried out by a professional patios](https://utmost-ibex-736.convex.cloud/api/storage/619bfc50-df0b-4fb8-91fa-a4ce1908e17b) A larger, level outdoor space, without replacing what is already sound beneath your feet. - **Survey & Quote Arranged**: A site visit assesses the ground before any work is agreed. - **Porcelain, Stone & Block**: Materials specified to match or complement what is already down. - **Separate Cost Lines**: Excavation, sub-base and bedding quoted as distinct stages, no hidden groundwork costs. ## Where patio extension & resurfacing work goes wrong The difference between a fix that lasts and one that fails within a season comes down to what happens before the first slab is lifted. - **Skipped Base Check**: Laying new slabs over a settled or uneven sub-base replicates the same movement within one frost cycle. **Sub-Base Assessment First**: A slab stability check and level survey confirm whether the existing base can carry new paving before any quote is given. - **Poor Drainage Fall**: Water pooling on the surface or draining back toward the house can breach the damp-proof course over time. **Fall Direction Verified**: The drainage check confirms fall direction and outlet position; an ACO channel drain is specified where the fall cannot be corrected by re-bedding alone. - **Mismatched Extension**: A new section that does not align in colour, thickness or joint width makes the join look like a patch rather than a planned addition. **Deliberate Border Detail**: Where an exact slab match is not available, a contrasting border course is agreed so the join reads as a design choice, not a compromise. - **Failed Mortar Joints**: Washed-out jointing sand lets slabs rock and weeds establish; repointing without fixing the cause means the same joints fail again within a year. **Repoint After Stabilising**: Loose slabs are lifted and re-bedded before jointing compound is applied, so the new joints are not working against movement beneath them. ## What patio extension & resurfacing covers From a single cracked area to a full perimeter extension, the scope is set by what the assessment finds, not by a default package. - **Patio Extension**: New paving section added to an existing patio, matched in fall, edging and slab choice to the current layout. - **Lift & Relay**: Sunken or rocking slabs lifted, bedding layer rebuilt to correct depth, slabs re-laid to a consistent level. - **Repointing**: Failed mortar or jointing sand removed and replaced with a suitable jointing compound to stop weed growth and slab movement. - **Drainage Improvement**: Surface fall corrected or a drainage channel installed to move standing water away from the house and boundaries. - **Pressure Washing & Resurfacing**: Surface cleaned and staining removed; resurfacing applied where the slab face is worn but the base and joints are sound. - **Concrete Slabs**: Cost-effective and widely available for matching older patios. - **Porcelain Paving**: Full mortar bed and primer slurry required for a lasting fix. - **Natural Stone**: Sandstone and limestone sourced to complement existing slabs. - **Block Paving**: Flexible bedding layer suits gardens with minor ground movement. ## Assessing whether your patio needs extending, resurfacing or replacing The right answer depends on what the base, drainage and existing slabs are actually doing, not on how the surface looks. A site assessment covers four checks: surface level, fall direction, joint condition and slab stability. If the sub-base is sound and the fall is correct, repointing and cleaning may be all that is needed. If slabs are rocking or water is pooling, a lift-and-relay with a rebuilt bedding layer is the appropriate fix before any extension is considered. Extensions require the new section to match the existing fall and drain to the same outlet. Where the existing patio uses concrete or natural stone slabs, the installer sources a close match or agrees a contrasting border detail that makes the join deliberate rather than approximate. Cambridge conservation area properties may need a planning check before ground levels are altered. Resurfacing over a failed base is not a lasting fix. If the sub-base has settled unevenly, laying new slabs on top replicates the same problem within a season. The quote covers excavation, sub-base reinstatement and bedding as separate lines so the cost of each stage is visible before work starts. [Start Your Enquiry](https://www.cambridgepatios.co.uk/contact) ## Why Cambridge Patio Co for extensions & resurfacing? Assessment before commitment, and costs broken down so you can see exactly what each stage involves. - **Assessment Before Any Quote**: The site is surveyed first, so no quote is issued without a level, drainage and stability check. - **Transparent Stage Pricing**: Excavation, sub-base, bedding and paving are quoted as separate lines so no groundwork cost is hidden. - **Conservation Area Awareness**: Cambridge properties in protected settings are flagged for a planning check before ground levels are touched. - **Material Matching Handled**: The installer sources a close slab match or agrees a border detail before work begins, not after the first section is laid. - **Surveyed First**: We take your enquiry and schedule a survey that covers Cambridge’s soil and drainage conditions. ## From first enquiry to finished patio 1. **Describe Your Patio**: Tell us the area size, what is down there now, and where water currently drains to. 2. **Survey & Quote**: The site visit runs the four-point assessment, and each stage is quoted as a separate cost line. 3. **Work Carried Out**: The agreed scope is completed, base, bedding, paving and jointing, with drainage confirmed before the installer leaves. [Start Your Enquiry](https://www.cambridgepatios.co.uk/contact) ## Typical Patio Extensions & Resurfacing Prices | Job | Typical cost | Typical size | | --- | --- | --- | | Small resurfacing job | £900-£2,000 | Up to 10m² | | Patio extension | £1,500-£3,500 | 10m² | | Larger extension or full resurfacing | £3,000-£7,500 | 20m²+ | These prices are estimates and often vary with the condition, size and scope of each job. Message or call us for a free, no-obligation quote. [See all prices](https://www.cambridgepatios.co.uk/pricing) ## Questions about patio extensions & resurfacing in Cambridge ### How do I know if my patio needs resurfacing or a full replacement? Resurfacing works when the base is solid and level but the surface is worn, stained or cracked. If slabs have shifted, the sub-base has failed, or drainage is poor, a full replacement is the right call. A survey will confirm which applies, the base condition is the deciding factor, not the surface appearance alone. ### Can you keep some of my existing patio, or does it all need lifting? Yes, sections in good condition can often stay. If part of the base is sound and levels are consistent, the work can extend or resurface only what needs attention. A survey confirms which sections are worth keeping before any lifting begins. ### Will my new patio extension match the old slabs, or will it look patchy? An exact match is rarely possible, since existing slabs weather and fade over time. The most reliable approach is choosing a complementary material or running a defined edge detail between old and new. The survey can advise on porcelain, sandstone, limestone or block paving options that sit well alongside what you already have. ### Do I need planning permission to extend a patio? Most patio extensions at ground level fall under permitted development and need no planning permission. The exception is if you are in a conservation area, the patio drains onto the ground rather than a soakaway or drainage system, or the area exceeds certain thresholds. Check with your local planning authority if you are unsure about your specific plot. ### Is patio resurfacing right for a small area, or is that more of a DIY job? Small areas can be resurfaced by a competent DIYer if the base is flat and stable. However, getting levels, falls for drainage, and mortar mix right is harder than it looks, and mistakes on even a small area can mean relaying the whole thing. A quote is available so you can weigh the cost against the risk. ### What should I check before I choose repair instead of replacing the patio? Check whether the base is still level and compact, whether drainage is working, and whether the movement is isolated or widespread. Patching one or two slabs makes sense when the rest is sound. If more than a third of the surface has shifted or the sub-base is soft, repair costs often approach replacement costs without fixing the root cause. ### How much does it cost to resurface a patio? Resurfacing costs vary with area size, material choice and base condition. Most jobs come in at £900-£2,000, with porcelain at the higher end and concrete or block paving at the lower. A survey gives you an accurate figure once the base has been assessed. ### How much does it cost to extend a patio? Extension costs depend on the size of the new area, the material specified and how much groundwork is needed. Most extensions are priced at £900-£2,000, with excavation depth and drainage requirements the main variables. Tell us the dimensions and we will quote properly. [More questions about Patio Extensions & Resurfacing?](https://www.cambridgepatios.co.uk/faq/patio-extensions-resurfacing) ## Tell Us About Your Patio Project Describe the garden, what is down there now and how it drains. We will schedule a survey and quote the work properly. [Start Your Enquiry](https://www.cambridgepatios.co.uk/contact) ## Business details ### Contact - **Phone**: [07787 475312](tel:07787475312) - **Email**: [contact@cambridgepatios.co.uk](mailto:contact@cambridgepatios.co.uk) - **Based in**: Cambridge, Cambridgeshire, CB1 - **Enquiries**: [Send an enquiry](https://www.cambridgepatios.co.uk/contact) — We ask for your name, phone number, email and a message. ### Opening hours - **Monday**: 08:00 – 18:00 - **Tuesday**: 08:00 – 18:00 - **Wednesday**: 08:00 – 18:00 - **Thursday**: 08:00 – 18:00 - **Friday**: 08:00 – 18:00 - **Saturday**: 10:00 – 16:00 - **Sunday**: 10:00 – 16:00 [Business details](https://www.cambridgepatios.co.uk/about/business.md)