Brian R Martel
Sole-practitioner Chartered Architectural Technologist; Vandola, St Pierre du Bois GY7 9HT. Distinct individual/practice from Martel Design Ltd (Paul Martel) despite the shared surname — different addresses and no evidence of a shared entity. Not RICS-regulated. 22 applications as agent 2022-2025.
What they specialise in
Work types this firm files more often than the island does — "×3.9" means nearly four times the rate that type appears across all Guernsey applications. Ordered by the value of the work, not the ratio, so the jobs that actually pay come first: a rebuild at ×1.7 is worth far more than window replacement at ×2.5.
| Work type | Vs island rate | Jobs | Typical job | Est. value of this work |
|---|---|---|---|---|
| Single-storey extension | ×1.6 | 8 | £100,000 | £800,000 |
"Est. value of this work" is the typical job cost for that type multiplied by how many they filed — a rough sense of where the practice's money sits, not their fees or their turnover. Needs at least 12 applications on file and 3 in the category before a ratio is shown, so a small practice can't look like a specialist on two lucky jobs. Classified from each application's own wording, so a minority will sit in a category a human would read differently.
The properties they work on
Of 22 applications this firm filed, 5 are tied to a later recorded sale of the same address, and 4 of those carry a real price. The midpoint is £1,044,911, each carried forward to 2026 money at the island index. Most of their filed work is in St Peter Port (6), St Sampson (6), St Peter's (4).
1 matched sale recorded at a nominal £1–£100 was excluded — those are family or trust transfers, not market prices. Matching is by address and parish against the States register, not a shared ID, so a shared house name can mismatch. It tells you the value bracket this firm operates in; it is not their fee and not a claim about any individual job.
Work-type mix
Classified from each application's own description text, most common first — the same keyword model this site's planning cost estimates use. Select a type to filter the applications below.
Typical cost of work
£33,352–£63,920 average, estimated per application from its own description text using this site's planning cost model — a rough guide only, not a quote from Brian R Martel or a reflection of what any specific job actually cost, and it does not include design fees. Each row below also carries an estimate at the prices of the year it was filed, deflated with the island house-price index — a proxy, since that index tracks house prices rather than construction costs and the two genuinely diverge (materials spiked in 2021–22 well beyond house-price growth). No Guernsey construction-cost index is published, so this is the best basis available, and it is an estimate on top of an estimate.
22 planning applications as agent — real cross-references
Success rate on decided applications: 100% granted (22 granted, 0 refused, of 22 decided — pending/withdrawn excluded)
| Application | Address | Description | Decision | |
|---|---|---|---|---|
| FULL/2023/1355 | The Cottage Baissieres Place Les Baissieres St. Andrew Guernsey GY1 2UG | Sub-divide, extend and alter to create 2 dwellings and associated works. Est. £17,610–£46,960 at 2023 prices | Granted | Full record Decision notice (PDF) |
| FULL/2023/2244 | Arosfa Les Gravees St. Peter Port Guernsey GY1 1RW | Demolish extension, erect single storey extension to north-east (rear) elevation. Est. £52,830–£88,050 at 2023 prices | Granted Later sold 1996-07-02 · £300,000 | Full record Decision notice (PDF) |
| FULL/2023/2295 | Southside House Southside St. Sampson Guernsey GY2 4QH | Change of use of section of building from storage and distribution (Use Class 22) to general retail (Use Class… Est. £17,610–£46,960 at 2023 prices | Granted | Full record Decision notice (PDF) |
| FULL/2023/2343 | L'Ecluse Rue Sauvage St. Sampson Guernsey GY2 4WH | Demolish conservatory, erect single storey extension to rear elevation. Est. £52,830–£88,050 at 2023 prices | Granted | Full record Decision notice (PDF) |
| FULL/2023/2459 | Haut Regard Hougue St. Clair Route De St. Clair St. Sampson Guernsey GY2 4DT | Re-roofing of dwelling house with slate (Protected Building). Est. £14,088–£29,350 at 2023 prices | Granted | Full record Decision notice (PDF) |
| FULL/2023/2462 | The Fort Complex Les Tracheries Road St. Sampson Guernsey | Demolish and remove existing outbuilding and creation of additional parking to north-west of site. Est. £29,350–£52,830 at 2023 prices | Granted | Full record Decision notice (PDF) |
| FULL/2024/0113 | Gleneagles Jerbourg Road St. Martin Guernsey GY4 6AZ | Erect single storey link extension to north-east (rear) elevation. Est. £54,863–£91,438 at 2024 prices | Granted | Full record Decision notice (PDF) |
| FULL/2024/0248 | Ultima Les Tracheries Road St. Sampson Guernsey GY2 4SS | Demolish and rebuild chimney to east elevation, remedial works to parapet and alterations to fenestration, (pa… Est. £18,288–£48,767 at 2024 prices | Granted | Full record Decision notice (PDF) |
| FULL/2024/0249 | Lavender Avenue Du Manoir Ville Au Roi Estate St. Peter Port Guernsey GY1 1PE | Alter roof form from flat roof to pitched roof. Est. £14,630–£30,479 at 2024 prices | Granted | Full record Decision notice (PDF) |
| FULL/2024/0572 | Le Petit Dolphin Sausmarez Street St. Peter Port Guernsey GY1 2PU | Erect single storey extension to west elevation of garages (Protected Building). Est. £54,863–£91,438 at 2024 prices | Granted | Full record Decision notice (PDF) |
| FULL/2024/0575 | Styx Centre Rue du Longfrie St. Pierre Du Bois Guernsey GY7 RZ | Variation of condition 4 of previously approved application FULL/2020/0737 to allow some excavation to take pl… Est. £18,288–£48,767 at 2024 prices | Granted | Full record Decision notice (PDF) |
| FULL/2024/0577 | Les Menages Rue Des Menages St. Pierre Du Bois Guernsey GY7 9AR | Erect walls, earthbank, balustrade and hardstanding to south-east of property. Est. £18,288–£48,767 at 2024 prices | Granted | Full record Decision notice (PDF) |
| FULL/2024/0786 | Seaton House Bosq Lane St. Peter Port Guernsey | Install garage door and create vehicular access to south (roadside) elevation. Est. £30,479–£54,863 at 2024 prices | Granted Later sold 2025-08-28 · £1 | Full record Decision notice (PDF) |
| FULL/2024/0792 | St Martin's Church La Bellieuse St. Martin Guernsey GY4 6RP | Install memorial bench to south of site (Protected Building). Est. £18,288–£48,767 at 2024 prices | Granted | Full record Decision notice (PDF) |
| FULL/2024/0991 | The Pines Rue De La Terre Norgiots St. Saviour Guernsey GY7 9JR | Alterations to fenestration to south and west elevations. Est. £18,288–£48,767 at 2024 prices | Granted | Full record Decision notice (PDF) |
| FULL/2024/1428 | Andalucia Collings Road St. Peter Port Guernsey GY1 1TX | Demolish porch, extend and alter to south (rear) elevation, erect single storey extension to north (front) ele… Est. £54,863–£91,438 at 2024 prices | Granted Later sold 2018-07-19 · £365,625 | Full record Decision notice (PDF) |
| FULL/2024/1444 | Marin Rue Des Tamaris La Rocquette Castel Guernsey GY5 7BA | Erect single storey extension/dower unit to north (side) elevation. Est. £54,863–£91,438 at 2024 prices | Granted | Full record Decision notice (PDF) |
| FULL/2025/0046 | Styx Centre Rue De Longfrie St. Pierre Du Bois Guernsey GY7 9RZ | Install storage container to south-east of building. Est. £18,898–£50,394 at 2025 prices | Granted | Full record Decision notice (PDF) |
| FULL/2025/0145 | La Grande Maison Rue De La Grande Maison St. Pierre Du Bois Guernsey GY7 9AL | Demolish existing outbuilding, erect 1.5 storey outbuilding to north-east of site. Est. £31,496–£56,694 at 2025 prices | Granted Later sold 1996-04-02 · £205,000 | Full record Decision notice (PDF) |
| FULL/2025/0147 | Marin Rue Des Tamaris La Rocquette Castel Guernsey GY5 7BA | Variation to previously approved plans to erect single storey extension to north (side) elevation - Increase f… Est. £56,694–£94,489 at 2025 prices | Granted | Full record Decision notice (PDF) |
| FULL/2025/0330 | The Isles St. George's Esplanade St. Peter Port Guernsey GY1 2BJ | Demolish chimney, erect single storey extension to south-west (rear) elevation. Est. £56,694–£94,489 at 2025 prices | Granted Later sold 2021-05-25 · £386,100 | Full record Decision notice (PDF) |
| FULL/2025/0331 | The Barn Maison Des Effards Les Effards Road St. Sampson Guernsey GY2 4YW | Variation to works previously approved to convert art studio to dwelling - Install replacement doors and windo… Est. £10,079–£25,197 at 2025 prices | Granted | Full record Decision notice (PDF) |